.preload *, .disable-transitions * {
    transition: none !important;
    animation: none !important;
}
:root {
    --bg-color: #030303;
    --card-bg: #0a0a0a;
    --card-border: #1f1f1f;
    --text-main: #ffffff;
    --text-muted: #888888;
    --accent: #ffffff;
    --accent-hover: #e5e5e5;
    --accent-text: #000000;
    --date-bg: #111111;
    --date-text: #ffffff;
    --theme-active: #ffffff;
    --theme-active-alpha: #333333;
    --theme-active-alpha-hover: #444444;
    --theme-active-border: #555555;
    --schedule-active: #4ade80;
    --schedule-active-alpha: rgba(74, 222, 128, 0.15);
    --schedule-active-alpha-hover: rgba(74, 222, 128, 0.25);
    --schedule-active-border: rgba(74, 222, 128, 0.3);
    --pill-bg: rgba(18, 18, 18, 0.55);
    --header-bg: rgba(10, 10, 10, 0.85);
    --header-bg-stuck: rgba(10, 10, 10, 0.95);
    --badge-bg: #ffffff;
    --badge-text: #000000;
    --badge-border: transparent;
    --today-badge-bg: rgba(255, 255, 255, 0.12);
    --today-badge-text: #ffffff;
    --today-badge-border: rgba(255, 255, 255, 0.22);
}

[data-theme="light"] {
    --bg-color: #f7f7f7;
    --card-bg: #ffffff;
    --card-border: #e0e0e0;
    --text-main: #111111;
    --text-muted: #666666;
    --accent: #111111;
    --accent-hover: #333333;
    --accent-text: #ffffff;
    --date-bg: #f0f0f0;
    --date-text: #111111;
    --theme-active: #111111;
    --theme-active-alpha: #e5e5e5;
    --theme-active-alpha-hover: #cccccc;
    --theme-active-border: #aaaaaa;
    --schedule-active: #16a34a;
    --schedule-active-alpha: rgba(22, 163, 74, 0.15);
    --schedule-active-alpha-hover: rgba(22, 163, 74, 0.25);
    --schedule-active-border: rgba(22, 163, 74, 0.3);
    --pill-bg: rgba(240, 240, 240, 0.65);
    --header-bg: rgba(255, 255, 255, 0.65);
    --header-bg-stuck: rgba(255, 255, 255, 0.95);
    --badge-bg: #111111;
    --badge-text: #ffffff;
    --badge-border: transparent;
    --today-badge-bg: #111111;
    --today-badge-text: #ffffff;
    --today-badge-border: #111111;
}

/* Color Theme Overrides */
[data-color-theme]:not([data-color-theme="standard"]) {
    --schedule-active: var(--theme-active);
    --schedule-active-alpha: var(--theme-active-alpha);
    --schedule-active-alpha-hover: var(--theme-active-alpha-hover);
    --schedule-active-border: var(--theme-active-border);
}

[data-color-theme="blue"],
[data-color-theme="purple"] {
    --accent: #b4cae3;
    --accent-hover: #d2e4fc;
    --accent-text: #1e3245;
    --theme-active: #b4cae3;
    --theme-active-alpha: #34495e;
    --theme-active-alpha-hover: #4b6177;
    --theme-active-border: #637a91;
    --badge-bg: #34495e;
    --badge-text: #ffffff;
    --badge-border: #637a91;
    --today-badge-bg: #34495e;
    --today-badge-text: #ffffff;
    --today-badge-border: #637a91;
    --date-bg: color-mix(in srgb, #34495e 20%, #141414);
}
[data-theme="light"][data-color-theme="blue"],
[data-theme="light"][data-color-theme="purple"] {
    --accent: #4b6177;
    --accent-hover: #34495e;
    --accent-text: #ffffff;
    --theme-active: #4b6177;
    --theme-active-alpha: #d2e4fc;
    --theme-active-alpha-hover: #b4cae3;
    --theme-active-border: #98afc7;
    --badge-bg: #4b6177;
    --badge-text: #ffffff;
    --badge-border: #4b6177;
    --today-badge-bg: #4b6177;
    --today-badge-text: #ffffff;
    --today-badge-border: #4b6177;
    --date-bg: color-mix(in srgb, #b4cae3 20%, #f7f7f7);
}

[data-color-theme="indigo"] {
    --accent: #ccc2dc;
    --accent-hover: #e8def8;
    --accent-text: #332d41;
    --theme-active: #ccc2dc;
    --theme-active-alpha: #4a4458;
    --theme-active-alpha-hover: #625b71;
    --theme-active-border: #7a7289;
    --badge-bg: #4a4458;
    --badge-text: #ffffff;
    --badge-border: #7a7289;
    --today-badge-bg: #4a4458;
    --today-badge-text: #ffffff;
    --today-badge-border: #7a7289;
    --date-bg: color-mix(in srgb, #4a4458 20%, #141414);
}
[data-theme="light"][data-color-theme="indigo"] {
    --accent: #625b71;
    --accent-hover: #4a4458;
    --accent-text: #ffffff;
    --theme-active: #625b71;
    --theme-active-alpha: #e8def8;
    --theme-active-alpha-hover: #ccc2dc;
    --theme-active-border: #b0a7c0;
    --badge-bg: #625b71;
    --badge-text: #ffffff;
    --badge-border: #625b71;
    --today-badge-bg: #625b71;
    --today-badge-text: #ffffff;
    --today-badge-border: #625b71;
    --date-bg: color-mix(in srgb, #ccc2dc 20%, #f7f7f7);
}

[data-color-theme="teal"],
[data-color-theme="pink"] {
    --accent: #afccc9;
    --accent-hover: #cce8e5;
    --accent-text: #1a3533;
    --theme-active: #afccc9;
    --theme-active-alpha: #304b49;
    --theme-active-alpha-hover: #476361;
    --theme-active-border: #5f7c7a;
    --badge-bg: #304b49;
    --badge-text: #ffffff;
    --badge-border: #5f7c7a;
    --today-badge-bg: #304b49;
    --today-badge-text: #ffffff;
    --today-badge-border: #5f7c7a;
    --date-bg: color-mix(in srgb, #304b49 20%, #141414);
}
[data-theme="light"][data-color-theme="teal"],
[data-theme="light"][data-color-theme="pink"] {
    --accent: #476361;
    --accent-hover: #304b49;
    --accent-text: #ffffff;
    --theme-active: #476361;
    --theme-active-alpha: #cce8e5;
    --theme-active-alpha-hover: #afccc9;
    --theme-active-border: #93b1ae;
    --badge-bg: #476361;
    --badge-text: #ffffff;
    --badge-border: #476361;
    --today-badge-bg: #476361;
    --today-badge-text: #ffffff;
    --today-badge-border: #476361;
    --date-bg: color-mix(in srgb, #afccc9 20%, #f7f7f7);
}

[data-color-theme="mauve"],
[data-color-theme="red"] {
    --accent: #deb4ce;
    --accent-hover: #fad8ef;
    --accent-text: #402138;
    --theme-active: #deb4ce;
    --theme-active-alpha: #58374d;
    --theme-active-alpha-hover: #714b64;
    --theme-active-border: #8c627e;
    --badge-bg: #58374d;
    --badge-text: #ffffff;
    --badge-border: #8c627e;
    --today-badge-bg: #58374d;
    --today-badge-text: #ffffff;
    --today-badge-border: #8c627e;
    --date-bg: color-mix(in srgb, #58374d 20%, #141414);
}
[data-theme="light"][data-color-theme="mauve"],
[data-theme="light"][data-color-theme="red"] {
    --accent: #714b64;
    --accent-hover: #58374d;
    --accent-text: #ffffff;
    --theme-active: #714b64;
    --theme-active-alpha: #fad8ef;
    --theme-active-alpha-hover: #deb4ce;
    --theme-active-border: #c49ab5;
    --badge-bg: #714b64;
    --badge-text: #ffffff;
    --badge-border: #714b64;
    --today-badge-bg: #714b64;
    --today-badge-text: #ffffff;
    --today-badge-border: #714b64;
    --date-bg: color-mix(in srgb, #deb4ce 20%, #f7f7f7);
}

[data-color-theme="amber"],
[data-color-theme="green"] {
    --accent: #e6c59f;
    --accent-hover: #fae2c4;
    --accent-text: #3d2f14;
    --theme-active: #e6c59f;
    --theme-active-alpha: #574528;
    --theme-active-alpha-hover: #725c3d;
    --theme-active-border: #8e7554;
    --badge-bg: #574528;
    --badge-text: #ffffff;
    --badge-border: #8e7554;
    --today-badge-bg: #574528;
    --today-badge-text: #ffffff;
    --today-badge-border: #8e7554;
    --date-bg: color-mix(in srgb, #574528 20%, #141414);
}
[data-theme="light"][data-color-theme="amber"],
[data-theme="light"][data-color-theme="green"] {
    --accent: #725c3d;
    --accent-hover: #574528;
    --accent-text: #ffffff;
    --theme-active: #725c3d;
    --theme-active-alpha: #fae2c4;
    --theme-active-alpha-hover: #e6c59f;
    --theme-active-border: #c8aa85;
    --badge-bg: #725c3d;
    --badge-text: #ffffff;
    --badge-border: #725c3d;
    --today-badge-bg: #725c3d;
    --today-badge-text: #ffffff;
    --today-badge-border: #725c3d;
    --date-bg: color-mix(in srgb, #e6c59f 20%, #f7f7f7);
}

[data-color-theme="olive"] {
    --accent: #bbccac;
    --accent-hover: #d7e8c7;
    --accent-text: #25341e;
    --theme-active: #bbccac;
    --theme-active-alpha: #3c4b33;
    --theme-active-alpha-hover: #536349;
    --theme-active-border: #6c7c61;
    --badge-bg: #3c4b33;
    --badge-text: #ffffff;
    --badge-border: #6c7c61;
    --today-badge-bg: #3c4b33;
    --today-badge-text: #ffffff;
    --today-badge-border: #6c7c61;
    --date-bg: color-mix(in srgb, #3c4b33 20%, #141414);
}
[data-theme="light"][data-color-theme="olive"] {
    --accent: #536349;
    --accent-hover: #3c4b33;
    --accent-text: #ffffff;
    --theme-active: #536349;
    --theme-active-alpha: #d7e8c7;
    --theme-active-alpha-hover: #bbccac;
    --theme-active-border: #a0b192;
    --badge-bg: #536349;
    --badge-text: #ffffff;
    --badge-border: #536349;
    --today-badge-bg: #536349;
    --today-badge-text: #ffffff;
    --today-badge-border: #536349;
    --date-bg: color-mix(in srgb, #bbccac 20%, #f7f7f7);
}

/* Global Tint overrides for deep theme */
[data-global-tint="true"][data-color-theme="blue"],
[data-global-tint="true"][data-color-theme="purple"] {
    --bg-color: color-mix(in srgb, #0d1d2a 30%, #000000);
    --card-bg: color-mix(in srgb, #1e3245 40%, #000000);
    --card-border: color-mix(in srgb, #34495e 50%, #000000);
    --date-bg: color-mix(in srgb, #34495e 35%, #000000);
    --header-bg: color-mix(in srgb, #0d1d2a 40%, rgba(10, 10, 10, 0.85));
    --header-bg-stuck: color-mix(in srgb, #0d1d2a 60%, rgba(10, 10, 10, 0.95));
    --pill-bg: color-mix(in srgb, #1e3245 45%, rgba(10, 10, 10, 0.55));
}
[data-theme="light"][data-global-tint="true"][data-color-theme="blue"],
[data-theme="light"][data-global-tint="true"][data-color-theme="purple"] {
    --bg-color: #edf3fa;
    --card-bg: color-mix(in srgb, #d2e4fc 85%, #ffffff);
    --card-border: #b4cae3;
    --date-bg: color-mix(in srgb, #b4cae3 40%, #ffffff);
    --header-bg: color-mix(in srgb, #d2e4fc 85%, rgba(255, 255, 255, 0.65));
    --header-bg-stuck: color-mix(in srgb, #d2e4fc 85%, rgba(255, 255, 255, 0.95));
    --pill-bg: color-mix(in srgb, #d2e4fc 45%, rgba(255, 255, 255, 0.65));
}

[data-global-tint="true"][data-color-theme="indigo"] {
    --bg-color: color-mix(in srgb, #1d192b 30%, #000000);
    --card-bg: color-mix(in srgb, #332d41 40%, #000000);
    --card-border: color-mix(in srgb, #4a4458 50%, #000000);
    --date-bg: color-mix(in srgb, #4a4458 35%, #000000);
    --header-bg: color-mix(in srgb, #1d192b 40%, rgba(10, 10, 10, 0.85));
    --header-bg-stuck: color-mix(in srgb, #1d192b 60%, rgba(10, 10, 10, 0.95));
    --pill-bg: color-mix(in srgb, #332d41 45%, rgba(10, 10, 10, 0.55));
}
[data-theme="light"][data-global-tint="true"][data-color-theme="indigo"] {
    --bg-color: #f6edff;
    --card-bg: color-mix(in srgb, #e8def8 85%, #ffffff);
    --card-border: #ccc2dc;
    --date-bg: color-mix(in srgb, #ccc2dc 40%, #ffffff);
    --header-bg: color-mix(in srgb, #e8def8 85%, rgba(255, 255, 255, 0.65));
    --header-bg-stuck: color-mix(in srgb, #e8def8 85%, rgba(255, 255, 255, 0.95));
    --pill-bg: color-mix(in srgb, #e8def8 45%, rgba(255, 255, 255, 0.65));
}

[data-global-tint="true"][data-color-theme="teal"],
[data-global-tint="true"][data-color-theme="pink"] {
    --bg-color: color-mix(in srgb, #06201e 30%, #000000);
    --card-bg: color-mix(in srgb, #1a3533 40%, #000000);
    --card-border: color-mix(in srgb, #304b49 50%, #000000);
    --date-bg: color-mix(in srgb, #304b49 35%, #000000);
    --header-bg: color-mix(in srgb, #06201e 40%, rgba(10, 10, 10, 0.85));
    --header-bg-stuck: color-mix(in srgb, #06201e 60%, rgba(10, 10, 10, 0.95));
    --pill-bg: color-mix(in srgb, #1a3533 45%, rgba(10, 10, 10, 0.55));
}
[data-theme="light"][data-global-tint="true"][data-color-theme="teal"],
[data-theme="light"][data-global-tint="true"][data-color-theme="pink"] {
    --bg-color: #eaf5f3;
    --card-bg: color-mix(in srgb, #cce8e5 85%, #ffffff);
    --card-border: #afccc9;
    --date-bg: color-mix(in srgb, #afccc9 40%, #ffffff);
    --header-bg: color-mix(in srgb, #cce8e5 85%, rgba(255, 255, 255, 0.65));
    --header-bg-stuck: color-mix(in srgb, #cce8e5 85%, rgba(255, 255, 255, 0.95));
    --pill-bg: color-mix(in srgb, #cce8e5 45%, rgba(255, 255, 255, 0.65));
}

[data-global-tint="true"][data-color-theme="mauve"],
[data-global-tint="true"][data-color-theme="red"] {
    --bg-color: color-mix(in srgb, #291022 30%, #000000);
    --card-bg: color-mix(in srgb, #402138 40%, #000000);
    --card-border: color-mix(in srgb, #58374d 50%, #000000);
    --date-bg: color-mix(in srgb, #58374d 35%, #000000);
    --header-bg: color-mix(in srgb, #291022 40%, rgba(10, 10, 10, 0.85));
    --header-bg-stuck: color-mix(in srgb, #291022 60%, rgba(10, 10, 10, 0.95));
    --pill-bg: color-mix(in srgb, #402138 45%, rgba(10, 10, 10, 0.55));
}
[data-theme="light"][data-global-tint="true"][data-color-theme="mauve"],
[data-theme="light"][data-global-tint="true"][data-color-theme="red"] {
    --bg-color: #fdf3f9;
    --card-bg: color-mix(in srgb, #fad8ef 85%, #ffffff);
    --card-border: #deb4ce;
    --date-bg: color-mix(in srgb, #deb4ce 40%, #ffffff);
    --header-bg: color-mix(in srgb, #fad8ef 85%, rgba(255, 255, 255, 0.65));
    --header-bg-stuck: color-mix(in srgb, #fad8ef 85%, rgba(255, 255, 255, 0.95));
    --pill-bg: color-mix(in srgb, #fad8ef 45%, rgba(255, 255, 255, 0.65));
}

[data-global-tint="true"][data-color-theme="amber"],
[data-global-tint="true"][data-color-theme="green"] {
    --bg-color: color-mix(in srgb, #241a04 30%, #000000);
    --card-bg: color-mix(in srgb, #3d2f14 40%, #000000);
    --card-border: color-mix(in srgb, #574528 50%, #000000);
    --date-bg: color-mix(in srgb, #574528 35%, #000000);
    --header-bg: color-mix(in srgb, #241a04 40%, rgba(10, 10, 10, 0.85));
    --header-bg-stuck: color-mix(in srgb, #241a04 60%, rgba(10, 10, 10, 0.95));
    --pill-bg: color-mix(in srgb, #3d2f14 45%, rgba(10, 10, 10, 0.55));
}
[data-theme="light"][data-global-tint="true"][data-color-theme="amber"],
[data-theme="light"][data-global-tint="true"][data-color-theme="green"] {
    --bg-color: #fcf4ea;
    --card-bg: color-mix(in srgb, #fae2c4 85%, #ffffff);
    --card-border: #e6c59f;
    --date-bg: color-mix(in srgb, #e6c59f 40%, #ffffff);
    --header-bg: color-mix(in srgb, #fae2c4 85%, rgba(255, 255, 255, 0.65));
    --header-bg-stuck: color-mix(in srgb, #fae2c4 85%, rgba(255, 255, 255, 0.95));
    --pill-bg: color-mix(in srgb, #fae2c4 45%, rgba(255, 255, 255, 0.65));
}

[data-global-tint="true"][data-color-theme="olive"] {
    --bg-color: color-mix(in srgb, #101f0a 30%, #000000);
    --card-bg: color-mix(in srgb, #25341e 40%, #000000);
    --card-border: color-mix(in srgb, #3c4b33 50%, #000000);
    --date-bg: color-mix(in srgb, #3c4b33 35%, #000000);
    --header-bg: color-mix(in srgb, #101f0a 40%, rgba(10, 10, 10, 0.85));
    --header-bg-stuck: color-mix(in srgb, #101f0a 60%, rgba(10, 10, 10, 0.95));
    --pill-bg: color-mix(in srgb, #25341e 45%, rgba(10, 10, 10, 0.55));
}
[data-theme="light"][data-global-tint="true"][data-color-theme="olive"] {
    --bg-color: #e5f6d5;
    --card-bg: color-mix(in srgb, #d7e8c7 85%, #ffffff);
    --card-border: #bbccac;
    --date-bg: color-mix(in srgb, #bbccac 40%, #ffffff);
    --header-bg: color-mix(in srgb, #d7e8c7 85%, rgba(255, 255, 255, 0.65));
    --header-bg-stuck: color-mix(in srgb, #d7e8c7 85%, rgba(255, 255, 255, 0.95));
    --pill-bg: color-mix(in srgb, #d7e8c7 45%, rgba(255, 255, 255, 0.65));
}

/* Universal smooth theme & color switching across all UI elements */
body,
header,
main,
footer,
dialog,
button,
input,
select,
svg,
svg path,
svg circle,
svg line,
svg rect,
.sticky-header-inner,
.header-brand,
.brand-title,
.header-actions,
.theme-toggle,
.theme-toggle-btn,
.settings-btn,
.icon-btn,
.day-container, 
.day-header, 
.day-title,
.day-date,
.lesson-row, 
.lesson-time, 
.lesson-number,
.subject-title,
.teacher,
.cabinet-badge,
.today-badge,
.break-row,
.break-line,
.break-label,
.break-duration,
.status-badge,
.time-badge,
.current-time-indicator,
.time-marker,
.group-selector, 
.custom-select-wrapper,
.custom-select-trigger, 
.custom-options, 
.custom-option,
.options-container,
.search-wrapper,
.group-search-wrapper,
.group-search-input,
.disclaimer, 
.modal-overlay,
.modal-window,
.modal-header,
.modal-title,
.modal-body,
.settings-item,
.settings-item-label,
.segmented-control,
.segmented-btn,
.segmented-btn span,
.color-theme-grid,
.color-theme-btn,
.today-floating-btn,
.pwa-install-btn,
.pwa-install-banner,
.empty-state,
.empty-state-card,
.empty-state-icon,
.empty-state-title,
.empty-state-subtitle,
.bell-schedule-modal,
.bell-schedule-card,
.bell-schedule-table,
.bell-schedule-row,
a {
    transition: background-color 0.45s cubic-bezier(0.4, 0, 0.2, 1), 
                border-color 0.45s cubic-bezier(0.4, 0, 0.2, 1), 
                color 0.45s cubic-bezier(0.4, 0, 0.2, 1), 
                fill 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                stroke 0.45s cubic-bezier(0.4, 0, 0.2, 1), 
                box-shadow 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Smooth Language Cross-fade Text Transition */
[data-i18n],
#lastUpdated,
#entityLabel,
#customSelectValue,
.group-search-input,
.day-header-date,
.today-badge,
.break-label,
.end-of-schedule,
.week-separator,
.current-lesson-badge span {
    transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1),
                filter 0.4s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, filter, transform;
}

body.lang-transitioning [data-i18n],
body.lang-transitioning #lastUpdated,
body.lang-transitioning #entityLabel,
body.lang-transitioning #customSelectValue,
body.lang-transitioning .group-search-input,
body.lang-transitioning .day-header-date,
body.lang-transitioning .today-badge,
body.lang-transitioning .break-label,
body.lang-transitioning .end-of-schedule,
body.lang-transitioning .week-separator,
body.lang-transitioning .current-lesson-badge span {
    opacity: 0 !important;
    filter: blur(5px) !important;
    transform: translateY(2px) !important;
    transition: opacity 0.25s ease-out,
                filter 0.25s ease-out,
                transform 0.25s ease-out !important;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    scrollbar-width: thin;
    scrollbar-color: var(--card-border) transparent;
    -webkit-tap-highlight-color: transparent;
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--card-border);
    border-radius: 8px;
    transition: background 0.2s ease;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}
::-webkit-scrollbar-button {
    display: none;
    width: 0;
    height: 0;
}

/* Remove arrows (spinners) from number inputs */
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
input[type="number"] {
    -moz-appearance: textfield;
    appearance: textfield;
}

html {
    scrollbar-gutter: stable;
    overflow-x: clip;
}

body {
    overflow-x: clip;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    /* Subtle dotted background pattern */
    background-image: radial-gradient(var(--card-border) 1px, transparent 1px);
    background-size: 24px 24px;
    transition: background-color 0.55s cubic-bezier(0.4, 0, 0.2, 1),
                color 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.top-blur {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 300px;
    z-index: 80;
    pointer-events: none;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    mask-image: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 1) 0px,
        rgba(0, 0, 0, 1) 60px,
        rgba(0, 0, 0, 0.738) 90px,
        rgba(0, 0, 0, 0.541) 115px,
        rgba(0, 0, 0, 0.382) 140px,
        rgba(0, 0, 0, 0.278) 160px,
        rgba(0, 0, 0, 0.194) 180px,
        rgba(0, 0, 0, 0.09) 200px,
        rgba(0, 0, 0, 0) 220px,
        rgba(0, 0, 0, 0) 100%
    );
    -webkit-mask-image: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 1) 0px,
        rgba(0, 0, 0, 1) 60px,
        rgba(0, 0, 0, 0.738) 90px,
        rgba(0, 0, 0, 0.541) 115px,
        rgba(0, 0, 0, 0.382) 140px,
        rgba(0, 0, 0, 0.278) 160px,
        rgba(0, 0, 0, 0.194) 180px,
        rgba(0, 0, 0, 0.09) 200px,
        rgba(0, 0, 0, 0) 220px,
        rgba(0, 0, 0, 0) 100%
    );
    opacity: 0;
    transition: opacity 0.3s ease;
}

.top-blur.active {
    opacity: 1;
}

.app-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem 0.5rem 1.5rem;
}

main#scheduleContainer {
    flex: 1;
    position: relative;
    z-index: 1;
}

header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 1.5rem;
    gap: 1.5rem;
}

h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    text-align: center;
    color: var(--text-main);
    opacity: 1;
}

.sticky-controls {
    position: -webkit-sticky;
    position: sticky;
    top: 1rem;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 3rem;
    width: 100%;
    max-width: 100%;
}

.sticky-controls.stuck {
    top: 1rem;
}

.group-selector {
    position: relative;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--pill-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 0.4rem 0.5rem;
    border-radius: 12px;
    border: 1px solid var(--card-border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transition: padding 0.25s ease, background-color 0.45s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.45s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.45s cubic-bezier(0.4, 0, 0.2, 1);
    -webkit-user-select: none;
    user-select: none;
    max-width: 100%;
    box-sizing: border-box;
}

.burger-menu-container {
    position: static;
    display: flex;
    align-items: center;
}

.burger-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.burger-btn:hover {
    background-color: var(--card-bg);
    color: var(--text-main);
}

.burger-btn svg {
    width: 22px;
    height: 22px;
}

.burger-dropdown {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 1rem;
    padding: 0.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    width: 100%;
    min-width: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    filter: blur(8px);
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), filter 0.25s ease, visibility 0.25s ease;
    z-index: 100;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

@keyframes dropdownBlurIn {
    0% {
        opacity: 0;
        filter: blur(14px);
        transform: translateY(-10px) scale(0.96);
    }
    100% {
        opacity: 1;
        filter: blur(0px);
        transform: translateY(0) scale(1);
    }
}

.burger-dropdown.show {
    opacity: 1;
    visibility: visible;
    animation: dropdownBlurIn 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    pointer-events: auto;
}

.burger-dropdown-item {
    background: transparent;
    border: none;
    color: var(--text-main);
    text-align: left;
    padding: 0.85rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.95rem;
    font-family: inherit;
    font-weight: 500;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.burger-dropdown-item:hover {
    background-color: var(--card-border);
}

.burger-dropdown-item.active {
    background-color: var(--accent);
    color: var(--accent-text);
    font-weight: 600;
}

.sticky-controls.stuck .group-selector {
    padding: 0.35rem 0.5rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
    transform: none;
}

.group-selector label {
    display: none;
}

.custom-select-wrapper {
    position: static;
    user-select: none;
    min-width: 0;
    max-width: 100%;
}

.custom-select-trigger {
    background-color: var(--accent);
    color: var(--accent-text);
    border: none;
    padding: 0.75rem 1.25rem;
    min-width: 0;
    max-width: 100%;
    box-sizing: border-box;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.6rem;
    position: relative;
    white-space: nowrap;
    transition: background-color 0.2s ease, width 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

#customSelectValue {
    text-align: center;
    line-height: 1.25;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

.custom-select-trigger:active {
    transform: scale(0.98);
}

.custom-select-trigger .arrow {
    width: 20px;
    height: 20px;
    background-color: var(--accent-text);
    mask: url("assets/icons/chevron-down.svg") no-repeat center / contain;
    -webkit-mask: url("assets/icons/chevron-down.svg") no-repeat center / contain;
    transition: transform 0.3s ease, background-color 0.45s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
}

.segmented-btn svg {
    flex-shrink: 0;
}

.color-theme-grid {
    margin-top: 0.45rem;
}

.color-theme-grid.segmented-control {
    --slider-bg: var(--theme-active-alpha);
}

.color-theme-grid.segmented-control::before {
    z-index: 0;
}

.color-theme-btn {
    flex: 1;
    height: 2.2rem;
    border-radius: 0.5rem;
    border: 4px solid transparent;
    background-clip: padding-box;
    box-sizing: border-box;
    background-color: var(--btn-color) !important;
    cursor: pointer;
    padding: 0;
    transition: opacity 0.2s ease;
    z-index: 1;
    position: relative;
}

.color-theme-btn:hover {
    opacity: 0.8;
}

.color-theme-btn[data-color="standard"] { --btn-color: #ffffff; }
[data-theme="light"] .color-theme-btn[data-color="standard"] { --btn-color: #111111; }

.color-theme-btn[data-color="blue"],
.color-theme-btn[data-color="purple"] { --btn-color: #b4cae3; }

.color-theme-btn[data-color="indigo"] { --btn-color: #ccc2dc; }

.color-theme-btn[data-color="teal"],
.color-theme-btn[data-color="pink"] { --btn-color: #afccc9; }

.color-theme-btn[data-color="mauve"],
.color-theme-btn[data-color="red"] { --btn-color: #deb4ce; }

.color-theme-btn[data-color="amber"],
.color-theme-btn[data-color="green"] { --btn-color: #e6c59f; }

.color-theme-btn[data-color="olive"] { --btn-color: #bbccac; }

/* Settings Select Base */
.custom-select-wrapper.open .custom-select-trigger .arrow {
    transform: rotate(180deg);
}

.custom-options {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    width: 100%;
    min-width: 0;
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 1rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    filter: blur(8px);
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), filter 0.25s ease, visibility 0.25s ease;
    max-height: 340px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.custom-select-wrapper.open .custom-options {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    filter: blur(0);
    pointer-events: auto;
}

.group-search-wrapper {
    position: relative;
    padding: 0.6rem;
    border-bottom: 1px solid var(--card-border);
    background: var(--card-bg);
    flex-shrink: 0;
}

.group-search-input {
    width: 100%;
    padding: 0.45rem 1.8rem 0.45rem 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    font-size: 0.825rem;
    color: var(--text-main);
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.group-search-input::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

.group-search-input:focus {
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.08);
}

[data-theme="light"] .group-search-input {
    background: rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .group-search-input:focus {
    background: rgba(0, 0, 0, 0.06);
}

.group-search-clear {
    position: absolute;
    right: 1.1rem;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 50%;
    padding: 0;
    display: none;
    align-items: center;
    justify-content: center;
    transition: color 0.15s ease, background-color 0.15s ease;
}

.group-search-clear svg {
    width: 1rem;
    height: 1rem;
}

.group-search-clear:hover {
    color: var(--text-main);
}

.custom-options-list {
    overflow-y: auto;
    flex: 1;
    max-height: 280px;
}

.custom-options-list::-webkit-scrollbar {
    width: 6px;
}
.custom-options-list::-webkit-scrollbar-thumb {
    background-color: var(--card-border);
    border-radius: 3px;
}

.group-search-empty {
    padding: 1.25rem 1rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.825rem;
    font-style: italic;
}

.custom-option {
    padding: 0.75rem 1.25rem;
    color: var(--text-main);
    cursor: pointer;
    font-size: 0.875rem;
    transition: background-color 0.15s;
    border-bottom: 1px solid var(--card-border);
}

.custom-option:last-child {
    border-bottom: none;
}

.custom-option:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.custom-option.selected {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--accent);
    font-weight: 600;
}

.last-updated {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: monospace;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.author-credit {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.author-credit a {
    color: var(--text-muted);
    text-decoration: underline;
    text-decoration-color: rgba(255,255,255,0.2);
    text-underline-offset: 2px;
    transition: color 0.2s, text-decoration-color 0.2s;
}

[data-theme="light"] .author-credit a {
    text-decoration-color: rgba(0,0,0,0.2);
}

.author-credit a:hover {
    color: var(--text-main);
    text-decoration-color: currentColor;
}

.disclaimer {
    margin-top: 0.75rem;
    margin-bottom: 0;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: monospace;
    letter-spacing: 0.05em;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
}

footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1.25rem;
    padding-bottom: 0.25rem;
    border-top: 1px dashed var(--card-border);
    animation: fadeInUp 0.5s ease-out forwards;
    opacity: 0;
    animation-delay: 0.5s;
}

.loader {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
    font-size: 1rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.schedule-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.45s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

.schedule-grid.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.day-container {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    transition: background-color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.day-container::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
}

.day-container::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.08) 50%,
        transparent 100%
    );
    transform: translateX(-100%);
    pointer-events: none;
    z-index: 10;
    opacity: 0;
    transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform, opacity;
}

[data-theme="light"] .day-container::after {
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(0, 0, 0, 0.04) 50%,
        transparent 100%
    );
}

.day-header {
    background-color: var(--date-bg);
    padding: 1.25rem 1.5rem;
    font-weight: 600;
    color: var(--date-text);
    border-bottom: 1px solid var(--card-border);
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: background-color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                color 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.day-header::before {
    content: '';
    display: inline-block;
    flex-shrink: 0;
    width: 7px;
    height: 7px;
    background-color: var(--accent);
    border-radius: 50%;
    transition: background-color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                width 0.2s ease,
                height 0.2s ease;
}

.day-container.is-today .day-header::before {
    width: 13px;
    height: 13px;
    box-shadow: 0 0 12px var(--accent-glow);
}

.day-container.is-today {
    border-color: var(--theme-active-border);
    box-shadow: 0 8px 30px -4px rgba(0, 0, 0, 0.45);
}

.day-container.is-today .day-header {
    border-bottom-color: rgba(255, 255, 255, 0.14);
}

[data-theme="light"] .day-container.is-today {
    border-color: var(--theme-active-border);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.07);
}

[data-theme="light"] .day-container.is-today .day-header {
    border-bottom-color: rgba(0, 0, 0, 0.12);
}

.today-badge {
    margin-left: auto;
    background-color: var(--accent);
    color: var(--accent-text);
    padding: 0.25rem 0.65rem;
    border-radius: 9999px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    border: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
    user-select: none;
    line-height: 1.2;
    transition: background-color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] .today-badge {
    background-color: var(--accent);
    color: var(--accent-text);
    border: none;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
}

.lesson-row {
    display: grid;
    grid-template-columns: 115px 1fr;
    border-bottom: 1px solid var(--card-border);
    position: relative;
    background-color: transparent;
    transition: background-color 0.4s ease;
}

.lesson-row::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: -1px;
    left: 0;
    width: 4px;
    background-color: transparent;
    z-index: 2;
    transition: background-color 0.4s ease;
}

.lesson-row:hover {
    background-color: rgba(255, 255, 255, 0.03);
}

.lesson-row.current-lesson {
    background-color: var(--schedule-active-alpha);
    border-left-color: var(--schedule-active);
}
.lesson-row.current-lesson::before {
    background-color: var(--schedule-active);
}

[data-theme="light"] .lesson-row.current-lesson {
    background-color: var(--schedule-active-alpha);
    border-left-color: var(--schedule-active);
}
[data-theme="light"] .lesson-row.current-lesson::before {
    background-color: var(--schedule-active);
}



.current-lesson-badge {
    margin-top: 0;
    margin-left: 0;
    font-size: 0.75rem;
    color: var(--schedule-active);
    font-weight: 600;
    line-height: 1.2;
    max-height: 0;
    max-width: 0;
    opacity: 0;
    overflow: hidden;
    transition: color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                max-height 0.4s ease,
                max-width 0.4s ease,
                opacity 0.4s ease,
                margin 0.4s ease;
}

.current-lesson-badge.active {
    max-height: 40px;
    max-width: 120px;
    opacity: 1;
    margin-top: 0.5rem;
}

[data-theme="light"] .current-lesson-badge {
    color: var(--schedule-active);
}

.current-lesson-badge span {
    font-size: 0.7rem;
    font-weight: 500;
    opacity: 0.8;
}

.break-row {
    height: 0;
    opacity: 0;
    overflow: hidden;
    transition: height 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s ease, border-width 0.4s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(90deg, var(--schedule-active-alpha) 0%, var(--schedule-active-alpha-hover) 50%, var(--schedule-active-alpha) 100%);
    border-top: 0px solid var(--schedule-active-border);
    border-bottom: 0px solid var(--schedule-active-border);
    margin: 0;
    padding: 0;
    color: var(--schedule-active);
    font-weight: 600;
    font-size: 0.85rem;
    user-select: none;
    box-sizing: border-box;
}

[data-theme="light"] .break-row {
    background: linear-gradient(90deg, var(--schedule-active-alpha) 0%, var(--schedule-active-alpha-hover) 50%, var(--schedule-active-alpha) 100%);
    color: var(--schedule-active);
    border-top-color: var(--schedule-active-border);
    border-bottom-color: var(--schedule-active-border);
}

.break-row.active {
    height: 2.75rem;
    opacity: 1;
    border-top-width: 1px;
    border-bottom-width: 1px;
}

.break-row .break-mins {
    font-size: 0.8rem;
    font-weight: 500;
    opacity: 0.9;
    margin-left: 0.35rem;
}

.lesson-time > *, 
.lesson-details > *,
.lesson-number {
    transition: transform 0.25s ease;
}

.lesson-row:hover .lesson-time > *, 
.lesson-row:hover .lesson-details > *,
.lesson-row:hover .lesson-number {
    transform: translateX(4px);
}

.lesson-row:last-child {
    border-bottom: none;
}

.lesson-time {
    padding: 1.5rem 0.5rem;
    border-right: 1px solid var(--card-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    text-align: center;
    background: rgba(255, 255, 255, 0.02);
    transition: border-color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                color 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.lesson-time-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.15rem;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-variant-numeric: tabular-nums;
    font-feature-settings: 'tnum';
    line-height: 1.2;
    transition: transform 0.25s ease,
                opacity 0.45s cubic-bezier(0.25, 1, 0.5, 1),
                filter 0.45s cubic-bezier(0.25, 1, 0.5, 1);
}

.lesson-time-display.time-morphing {
    opacity: 0;
    filter: blur(8px);
    transform: scale(0.92);
}

.time-item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 3px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: 0.01em;
    white-space: nowrap;
}

.time-separator {
    display: inline-block;
    font-size: 0.65rem;
    line-height: 1;
    color: var(--text-muted);
    opacity: 0.45;
    margin: 1px 0;
    user-select: none;
}

.time-ampm {
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    text-transform: uppercase;
    color: var(--text-main);
    opacity: 0.45;
    background: none;
    padding: 0;
    border-radius: 0;
    line-height: inherit;
    display: inline;
    vertical-align: baseline;
    transition: color 0.45s ease, opacity 0.45s ease;
}

[data-theme="light"] .time-ampm {
    color: var(--text-main);
    opacity: 0.4;
    background: none;
}

.lesson-number {
    font-family: 'Inter', sans-serif;
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--accent-text);
    background-color: var(--accent);
    border: none;
    width: 2.25rem;
    height: 2.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    margin-bottom: 0.75rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: transform 0.25s ease,
                background-color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.lesson-details {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.75rem;
}

.lesson-subject {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-main);
    line-height: 1.4;
    margin-bottom: 0.5rem;
}

.cancellation-tag {
    color: #f97316;
    font-weight: 600;
}

.lesson-meta-wrapper {
    display: flex;
}

.lesson-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding-right: 1rem;
}

.meta-item:not(:first-child) {
    padding-left: 1rem;
    border-left: 1px solid rgba(255, 255, 255, 0.15);
}
[data-theme="light"] .meta-item:not(:first-child) {
    border-left: 1px solid rgba(0, 0, 0, 0.15);
}

/* Icons using SVG data URIs for a cleaner look */
.icon-location {
    width: 14px; height: 14px;
    background-color: currentColor;
    mask: url("assets/icons/hash.svg") no-repeat center / contain;
    -webkit-mask: url("assets/icons/hash.svg") no-repeat center / contain;
}

.icon-monitor {
    width: 14px; height: 14px;
    background-color: currentColor;
    mask: url("assets/icons/monitor.svg") no-repeat center / contain;
    -webkit-mask: url("assets/icons/monitor.svg") no-repeat center / contain;
}

.icon-user {
    width: 14px; height: 14px;
    background-color: currentColor;
    mask: url("assets/icons/user.svg") no-repeat center / contain;
    -webkit-mask: url("assets/icons/user.svg") no-repeat center / contain;
}

.icon-group {
    width: 14px; height: 14px;
    background-color: currentColor;
    mask: url("assets/icons/users.svg") no-repeat center / contain;
    -webkit-mask: url("assets/icons/users.svg") no-repeat center / contain;
}

.icon-link {
    width: 14px; height: 14px;
    background-color: currentColor;
    mask: url("assets/icons/link.svg") no-repeat center / contain;
    -webkit-mask: url("assets/icons/link.svg") no-repeat center / contain;
}

.icon-external-link {
    width: 16px; height: 16px;
    background-color: currentColor;
    mask: url("assets/icons/external-link.svg") no-repeat center / contain;
    -webkit-mask: url("assets/icons/external-link.svg") no-repeat center / contain;
}

.icon-copy {
    width: 16px; height: 16px;
    background-color: currentColor;
    mask: url("assets/icons/copy.svg") no-repeat center / contain;
    -webkit-mask: url("assets/icons/copy.svg") no-repeat center / contain;
}

/* Link Cabinet and Context Menu */
.link-cabinet {
    cursor: pointer;
    transition: color 0.2s ease;
    display: inline-flex;
    align-items: center;
    max-width: 100%;
}
.link-cabinet:hover {
    color: var(--accent);
}
.link-cabinet .url-text {
    text-decoration: underline;
    text-underline-offset: 3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 250px;
    display: inline-block;
}
@media (max-width: 640px) {
    .link-cabinet .url-text {
        max-width: 180px;
    }
}

.link-context-menu {
    min-width: 170px;
    position: absolute;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.95);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 0.5rem;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
    display: flex;
    flex-direction: column;
    gap: 4px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}
[data-theme="light"] .link-context-menu {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}
.link-context-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.cm-btn {
    width: 100%;
    white-space: nowrap;
    background: transparent;
    border: none;
    color: var(--text-main);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: background-color 0.2s ease;
    text-align: left;
}
.cm-btn:hover {
    background-color: rgba(255, 255, 255, 0.05);
}
[data-theme="light"] .cm-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
    border: 1px dashed var(--card-border);
    border-radius: 12px;
}

/* Animations */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); filter: blur(8px); }
    to { opacity: 1; transform: translateY(0); filter: blur(0); }
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-20px); filter: blur(8px); }
    to { opacity: 1; transform: translateY(0); filter: blur(0); }
}

.day-container {
    opacity: 1;
}

.week-separator {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin: 1rem 0;
    opacity: 1;
    position: relative;
}

.week-separator::before,
.week-separator::after {
    content: '';
    position: absolute;
    top: 50%;
    width: calc(50% - 6rem);
    height: 1px;
    background: var(--card-border);
}

.week-separator::before { left: 0; }
.week-separator::after { right: 0; }

.end-of-schedule {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 2rem;
    padding: 2rem;
    border: 1px dashed var(--card-border);
    border-radius: 12px;
    opacity: 0;
    animation: fadeInUp 0.5s ease-out forwards;
}

/* Mobile Responsive */
@media (max-width: 640px) {
    .app-container {
        padding: 1.5rem 1rem 0.5rem 1rem;
    }

    .top-blur {
        top: 0;
        height: calc(85px + env(safe-area-inset-top, 0px));
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        mask-image: none;
        -webkit-mask-image: none;
        background: linear-gradient(
            to bottom,
            var(--bg-color) 0%,
            var(--bg-color) calc(15px + env(safe-area-inset-top, 0px)),
            color-mix(in srgb, var(--bg-color) 88%, transparent) calc(45px + env(safe-area-inset-top, 0px)),
            color-mix(in srgb, var(--bg-color) 35%, transparent) calc(68px + env(safe-area-inset-top, 0px)),
            transparent 100%
        );
    }

    h1 {
        font-size: 2.5rem;
    }

    header {
        margin-bottom: 1.5rem;
    }

    .sticky-controls,
    .sticky-controls.stuck {
        top: 0.5rem;
        z-index: 1000;
    }

    .group-selector {
        position: relative;
        z-index: 1000;
        padding: 0.35rem 0.5rem;
        gap: 0.5rem;
        max-width: 100%;
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
    }

    .group-selector label {
        font-size: 0.8125rem;
    }

    .custom-select-trigger {
        padding: 0.6rem 0.85rem;
        font-size: 0.85rem;
        gap: 0.4rem;
        min-width: 0;
        max-width: 100%;
    }

    .burger-dropdown.show,
    .custom-select-wrapper.open .custom-options {
        transform: translateY(0);
    }

    .lesson-row {
        grid-template-columns: 1fr;
    }

    .lesson-time {
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
        gap: 1rem;
        padding: 1rem 1.5rem;
        border-right: none;
        border-bottom: 1px solid var(--card-border);
    }

    .lesson-time-display {
        flex-direction: row;
        align-items: center;
        gap: 0.45rem;
    }

    .time-separator {
        margin: 0;
    }
    
    .lesson-number {
        margin-bottom: 0;
        width: 2rem;
        height: 2rem;
        font-size: 1.125rem;
    }

    .current-lesson-badge {
        text-align: right;
    }

    .current-lesson-badge.active {
        margin-top: 0;
        margin-left: auto;
    }

    /* Mobile Performance: Replace all heavy GPU blurs with crisp Opacity + Scale / Translate */

    .settings-modal-overlay {
        background: rgba(0, 0, 0, 0.45) !important;
        backdrop-filter: blur(8px) !important;
        -webkit-backdrop-filter: blur(8px) !important;
    }

    [data-theme="light"] .settings-modal-overlay {
        background: rgba(0, 0, 0, 0.4) !important;
        backdrop-filter: blur(8px) !important;
        -webkit-backdrop-filter: blur(8px) !important;
    }

    .settings-modal-card {
        background-color: var(--card-bg) !important;
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
        filter: none !important;
        box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5) !important;
    }

    [data-theme="light"] .settings-modal-card {
        box-shadow: 0 12px 36px rgba(0, 0, 0, 0.15) !important;
    }

    .settings-modal-overlay.active {
        animation: mobileFadeIn 0.25s ease-out forwards !important;
    }

    .settings-modal-overlay.closing {
        animation: mobileFadeOut 0.2s ease-in forwards !important;
    }

    .settings-modal-overlay.active .settings-modal-card {
        animation: mobilePopIn 0.28s cubic-bezier(0.16, 1, 0.3, 1) forwards !important;
    }

    .settings-modal-overlay.closing .settings-modal-card {
        animation: mobilePopOut 0.2s cubic-bezier(0.4, 0, 0.2, 1) forwards !important;
    }

    /* Remove blur from language transitions on mobile */
    body.lang-transitioning #lastUpdated,
    body.lang-transitioning #entityLabel,
    body.lang-transitioning #customSelectValue,
    body.lang-transitioning .group-search-input,
    body.lang-transitioning .day-header-date,
    body.lang-transitioning .today-badge,
    body.lang-transitioning .break-label,
    body.lang-transitioning .end-of-schedule,
    body.lang-transitioning .week-separator,
    body.lang-transitioning .current-lesson-badge span {
        filter: none !important;
        opacity: 0 !important;
        transform: translateY(3px) !important;
        transition: opacity 0.2s ease-out, transform 0.2s ease-out !important;
    }

    /* Remove blur from time morphing on mobile */
    .lesson-time-display.time-morphing {
        filter: none !important;
        opacity: 0 !important;
        transform: scale(0.94) !important;
        transition: opacity 0.22s ease-out, transform 0.22s ease-out !important;
    }

    /* Remove blur from dropdowns on mobile */
    .burger-dropdown,
    .custom-options {
        filter: none !important;
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
        background-color: var(--card-bg) !important;
    }

    .burger-dropdown.show {
        animation: mobileFadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1) forwards !important;
    }

    /* Remove blur from previous days collapse/expand on mobile */
    .day-container.is-past-day,
    .week-separator.past-separator,
    body:not(.show-prev-days) .day-container.is-past-day,
    body:not(.show-prev-days) .week-separator.past-separator {
        filter: none !important;
    }

    /* Disable heavy background transitions on mobile to guarantee 120 FPS modal theme switching */
    body.modal-open,
    body.modal-open main,
    body.modal-open main *,
    body.modal-open header,
    body.modal-open header *,
    body.modal-open .today-floating-btn {
        transition: none !important;
    }
}

@keyframes mobileFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes mobileFadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}
@keyframes mobilePopIn {
    from { opacity: 0; transform: scale(0.95) translateY(12px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}
@keyframes mobilePopOut {
    from { opacity: 1; transform: scale(1) translateY(0); }
    to { opacity: 0; transform: scale(0.95) translateY(10px); }
}

/* Light Theme Component Overrides */
[data-theme="light"] .group-selector {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}
[data-theme="light"] .sticky-controls.stuck .group-selector {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}
[data-theme="light"] .custom-options {
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}
[data-theme="light"] .custom-option:hover {
    background-color: rgba(0, 0, 0, 0.05);
}
[data-theme="light"] .custom-option.selected {
    background-color: rgba(0, 0, 0, 0.08);
}
[data-theme="light"] .day-container::before {
    background: linear-gradient(90deg, transparent, rgba(0,0,0,0.1), transparent);
}
[data-theme="light"] .lesson-row:hover {
    background-color: rgba(0, 0, 0, 0.06);
}
[data-theme="light"] .lesson-meta-wrapper {
    background: transparent;
}
[data-theme="light"] .lesson-meta-wrapper:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

/* Floating Actions Pill Container */
.floating-actions,
.student-announcement {
    position: fixed;
    bottom: 1.25rem;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px;
    border-radius: 999px;
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    box-shadow: 0 4px 16px rgba(0,0,0,0.4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-sizing: border-box;
}

[data-theme="light"] .floating-actions,
[data-theme="light"] .student-announcement {
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.floating-actions {
    right: 1.25rem;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-radius 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Lifting settings button when announcement banner is active */
body.has-announcement .floating-actions {
    transform: translateY(calc(-1 * (var(--announcement-lift, 54px) + 0.65rem)));
    border-radius: 12px;
}

.student-announcement {
    left: 1.25rem;
    right: auto;
    max-width: min(560px, calc(100vw - 7rem));
    min-height: 48px;
    color: var(--text-main);
    opacity: 0;
    transform: translateY(16px) scale(0.97);
    pointer-events: none;
    border-radius: 12px;
    transition: opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1), transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.student-announcement.is-visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.announcement-content {
    display: flex;
    align-items: center;
    min-width: 0;
}

.announcement-icon-badge {
    width: 40px;
    height: 40px;
    min-width: 40px;
    min-height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-main);
    flex-shrink: 0;
}

.announcement-icon-badge svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    stroke-width: 2;
    display: block;
}

.announcement-text {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-main);
    line-height: 1.4;
    padding: 0 16px 0 2px;
    word-break: break-word;
    user-select: text;
}

.student-announcement.has-close .announcement-text {
    padding-right: 4px;
}

.announcement-text a,
.announcement-link {
    color: #38bdf8;
    text-decoration: underline;
    text-underline-offset: 3px;
    font-weight: 600;
    transition: color 0.15s ease, opacity 0.15s ease;
}

.announcement-text a:hover,
.announcement-link:hover {
    color: #7dd3fc;
    opacity: 0.85;
}

[data-theme="light"] .announcement-text a,
[data-theme="light"] .announcement-link {
    color: #0284c7;
}

[data-theme="light"] .announcement-text a:hover,
[data-theme="light"] .announcement-link:hover {
    color: #0369a1;
}

.announcement-close,
button.announcement-close,
.action-btn.announcement-close {
    appearance: none;
    -webkit-appearance: none;
    border: none !important;
    background: transparent !important;
    background-color: transparent !important;
    box-shadow: none !important;
    outline: none !important;
    -webkit-tap-highlight-color: transparent;
    padding: 0;
    margin-left: 0;
    margin-right: 6px;
    width: 28px;
    height: 28px;
    min-width: 28px;
    min-height: 28px;
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-muted);
    opacity: 0.6;
    transform: none !important;
    transition: opacity 0.2s ease, color 0.2s ease;
    flex-shrink: 0;
}

.announcement-close:hover,
button.announcement-close:hover,
.action-btn.announcement-close:hover {
    border: none !important;
    background: transparent !important;
    background-color: transparent !important;
    box-shadow: none !important;
    outline: none !important;
    color: var(--text-main);
    opacity: 1;
    transform: none !important;
}

.announcement-close:focus,
.announcement-close:focus-visible,
.announcement-close:active {
    border: none !important;
    background: transparent !important;
    background-color: transparent !important;
    box-shadow: none !important;
    outline: none !important;
}

.announcement-close svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    stroke-width: 2;
    display: block;
    pointer-events: none;
}

@media (max-width: 640px) {
    .floating-actions,
    .student-announcement {
        bottom: 1rem;
    }

    .floating-actions {
        right: 1rem;
    }

    .student-announcement {
        left: 1rem;
        right: 1rem;
        max-width: none;
        min-height: 46px;
    }

    .announcement-icon-badge {
        width: 38px;
        height: 38px;
        min-width: 38px;
        min-height: 38px;
    }

    body.has-announcement .floating-actions {
        transform: translateY(calc(-1 * (var(--announcement-lift, 54px) + 0.65rem)));
    }
}

.action-btn,
.theme-toggle {
    appearance: none;
    -webkit-appearance: none;
    position: relative;
    width: 40px;
    height: 40px;
    min-width: 40px;
    min-height: 40px;
    padding: 0;
    border-radius: 50%;
    background: transparent;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: none;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.action-btn:hover,
.theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: scale(1.05);
}

[data-theme="light"] .action-btn:hover,
[data-theme="light"] .theme-toggle:hover {
    background-color: rgba(0, 0, 0, 0.06);
}

.pwa-install-btn {
    position: relative;
}

.pwa-install-btn::after {
    content: '';
    position: absolute;
    right: -2px;
    top: 25%;
    height: 50%;
    width: 1px;
    background-color: var(--card-border);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
    position: absolute;
    width: 22px;
    height: 22px;
    background-color: var(--text-main);
    transition: transform 0.65s cubic-bezier(0.4, 0, 0.2, 1), 
                opacity 0.65s cubic-bezier(0.4, 0, 0.2, 1), 
                background-color 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-toggle .icon-sun {
    mask: url("assets/icons/sun.svg") no-repeat center / contain;
    -webkit-mask: url("assets/icons/sun.svg") no-repeat center / contain;
}

.theme-toggle .icon-moon {
    mask: url("assets/icons/moon.svg") no-repeat center / contain;
    -webkit-mask: url("assets/icons/moon.svg") no-repeat center / contain;
}

/* Dark mode (default): show sun, hide moon */
body[data-theme="dark"] .icon-sun {
    opacity: 1;
    transform: rotate(0) scale(1);
}
body[data-theme="dark"] .icon-moon {
    opacity: 0;
    transform: rotate(90deg) scale(0.5);
}

/* Light mode: show moon, hide sun */
body[data-theme="light"] .icon-sun {
    opacity: 0;
    transform: rotate(-90deg) scale(0.5);
}
body[data-theme="light"] .icon-moon {
    opacity: 1;
    transform: rotate(0) scale(1);
}

@media (max-width: 640px) {
    footer {
        position: relative;
        text-align: center;
        padding-top: 1.25rem;
        padding-bottom: 0.25rem;
    }

    .floating-actions {
        right: 1rem;
        bottom: 1rem;
    }

    .action-btn,
    .theme-toggle {
        width: 38px;
        height: 38px;
        min-width: 38px;
        min-height: 38px;
    }

    .custom-select-trigger {
        min-width: 0;
        padding: 0.75rem 1.25rem;
        font-size: 0.875rem;
    }
}

/* Skeleton Loader */
.skeleton-container {
    padding: 1rem 0;
}
.skeleton-day-header {
    height: 24px;
    width: 200px;
    background: var(--card-border);
    border-radius: 8px;
    margin: 2rem 0 1rem 0;
    animation: pulse 1.5s infinite ease-in-out;
}
.skeleton-row {
    height: 70px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    margin-bottom: 0.5rem;
    animation: pulse 1.5s infinite ease-in-out;
}
[data-theme="light"] .skeleton-day-header,
[data-theme="light"] .skeleton-row {
    animation: pulse-light 1.5s infinite ease-in-out;
}

@keyframes pulse {
    0% { opacity: 0.3; }
    50% { opacity: 0.7; }
    100% { opacity: 0.3; }
}
@keyframes pulse-light {
    0% { opacity: 0.5; }
    50% { opacity: 1; }
    100% { opacity: 0.5; }
}

/* Updating overlay over existing schedule */
.updating-indicator {
    position: absolute;
    top: calc(100% + 1.5rem);
    left: 50%;
    transform: translate(-50%, -50%) translateY(-6px) scale(0.96);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 0.4rem 1.1rem;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    width: max-content;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
    pointer-events: none;
    opacity: 0;
    filter: blur(8px);
    z-index: 10;
    transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.5s cubic-bezier(0.16, 1, 0.3, 1),
                filter 0.5s ease;
}

.updating-indicator.visible {
    opacity: 1;
    filter: blur(0);
    transform: translate(-50%, -50%) scale(1);
    pointer-events: auto;
}

.updating-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent);
    border-radius: 50%;
    animation: pulseDot 1.4s infinite ease-in-out;
    will-change: transform, opacity;
    flex-shrink: 0;
}

@keyframes pulseDot {
    0%, 100% { transform: scale(0.85); opacity: 0.4; }
    50% { transform: scale(1.25); opacity: 1; }
}

/* GPU-accelerated ultra-smooth shimmer over existing cards */
.schedule-grid.is-updating {
    pointer-events: none;
    transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.schedule-grid.is-updating .day-container {
    opacity: 0.8;
}

.schedule-grid.is-updating .day-container::after {
    opacity: 1;
    animation: cardShimmer 1.8s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

@keyframes cardShimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

@keyframes cardUpdatingPulse {
    0%, 100% { opacity: 0.85; }
    50% { opacity: 0.55; }
}

@media (max-width: 640px) {
    .lesson-details {
        padding: 1.5rem;
    }

    .meta-item:not(:first-child) {
        border-left: none !important;
        padding-left: 0 !important;
    }
    
    .meta-item {
        margin-bottom: 0.5rem;
    }
}

/* ── Offline Banner (Top Notice) ─────────────────────────── */
.offline-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: rgba(20, 20, 20, 0.9);
    border: 0px solid rgba(245, 158, 11, 0.35);
    color: #fcd34d;
    padding: 0 1.1rem;
    border-radius: 14px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0);
    position: -webkit-sticky;
    position: sticky;
    top: 0.75rem;
    z-index: 95;
    
    max-height: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(0.95);
    filter: blur(8px);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    overflow: hidden;
}

.offline-banner.is-visible {
    max-height: 60px;
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
    filter: blur(0);
    margin-bottom: 1.25rem;
    padding-top: 0.65rem;
    padding-bottom: 0.65rem;
    border-width: 1px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

/* Position sticky controls right below sticky offline banner when active */
.offline-banner.is-visible ~ .sticky-controls {
    top: calc(0.75rem + 46px);
}

.offline-icon-svg {
    flex-shrink: 0;
    opacity: 0.9;
}

.offline-time {
    opacity: 0.75;
    font-size: 0.8rem;
}

[data-theme="light"] .offline-banner {
    background: rgba(255, 255, 255, 0.92);
    color: #92400e;
    border-color: rgba(245, 158, 11, 0.4);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

@keyframes modalOverlayFadeIn {
    from {
        opacity: 0;
        backdrop-filter: blur(0px);
        -webkit-backdrop-filter: blur(0px);
    }
    to {
        opacity: 1;
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
    }
}

@keyframes modalOverlayFadeOut {
    from {
        opacity: 1;
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
    }
    to {
        opacity: 0;
        backdrop-filter: blur(0px);
        -webkit-backdrop-filter: blur(0px);
    }
}

@keyframes modalCardBlurIn {
    0% {
        opacity: 0;
        filter: blur(16px);
        transform: scale(0.92) translateY(18px);
    }
    50% {
        filter: blur(6px);
    }
    100% {
        opacity: 1;
        filter: blur(0px);
        transform: scale(1) translateY(0);
    }
}

@keyframes modalCardBlurOut {
    0% {
        opacity: 1;
        filter: blur(0px);
        transform: scale(1) translateY(0);
    }
    100% {
        opacity: 0;
        filter: blur(16px);
        transform: scale(0.92) translateY(14px);
    }
}

/* Settings Modal */
.settings-modal-overlay {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    background: rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    padding: 1rem;
    overscroll-behavior: contain;
}

.settings-modal-overlay.active {
    opacity: 1;
    visibility: visible;
    animation: modalOverlayFadeIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.settings-modal-overlay.closing {
    animation: modalOverlayFadeOut 0.28s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.settings-modal-card {
    background-color: var(--header-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: 1.25rem;
    width: 100%;
    max-width: 400px;
    padding: 1.5rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
    transform: scale(0.95) translateY(10px);
    filter: blur(8px);
    opacity: 0;
    transition: background-color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] .settings-modal-card {
    border: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.settings-modal-overlay.active .settings-modal-card {
    animation: modalCardBlurIn 0.38s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.settings-modal-overlay.closing .settings-modal-card {
    animation: modalCardBlurOut 0.26s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.settings-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}

.settings-modal-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-main);
}

.settings-close-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    width: 2.25rem;
    height: 2.25rem;
    padding: 0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s ease, background-color 0.2s ease;
    flex-shrink: 0;
}

.settings-close-btn:hover {
    color: var(--text-main);
    background: var(--hover-bg, rgba(255, 255, 255, 0.1));
}

.settings-modal-body {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.global-tint-wrapper {
    max-height: 0;
    opacity: 0;
    margin-top: -1.25rem;
    overflow: hidden;
    transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.35s ease,
                margin-top 0.45s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.global-tint-wrapper .settings-item {
    filter: blur(14px);
    transform: scale(0.94) translateY(-8px);
    opacity: 0;
    transition: filter 0.4s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
                opacity 0.35s ease;
    will-change: filter, transform, opacity;
}

.global-tint-wrapper.show {
    max-height: 120px;
    opacity: 1;
    margin-top: 0;
    pointer-events: auto;
}

.global-tint-wrapper.show .settings-item {
    filter: blur(0px);
    transform: scale(1) translateY(0);
    opacity: 1;
}

.settings-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.settings-item-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
}

/* Segmented Control for Options */
.segmented-control {
    --item-count: 2;
    display: flex;
    position: relative;
    z-index: 1;
    background-color: rgba(0, 0, 0, 0.2);
    padding: 4px;
    border-radius: 0.75rem;
    border: 1px solid var(--card-border);
    gap: 4px;
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
    cursor: pointer;
    transition: background-color 0.45s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.segmented-control.is-dragging::before {
    transition: none !important;
}

.segmented-control::before {
    content: '';
    position: absolute;
    top: 4px;
    bottom: 4px;
    left: 4px;
    width: calc((100% - 8px - (var(--item-count) - 1) * 4px) / var(--item-count));
    background-color: var(--slider-bg, var(--accent));
    border-radius: 0.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
    transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1), background-color 0.45s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.45s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: -1;
    pointer-events: none;
    transform: translateX(calc(var(--active-index, 0) * (100% + 4px)));
}

[data-theme="light"] .segmented-control {
    background: rgba(0, 0, 0, 0.05);
}

.segmented-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 0.75rem;
    border: none;
    border-radius: 0.5rem;
    background: transparent !important;
    box-shadow: none !important;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 2;
}

.segmented-btn:hover {
    color: var(--text-main);
}

.segmented-btn.active {
    color: var(--accent-text);
    font-weight: 600;
}

/* Layout geometry transitions — активны только во время переключения компактного режима */
body.layout-transitioning .app-container,
body.layout-transitioning .sticky-controls,
body.layout-transitioning .schedule-grid,
body.layout-transitioning .day-container,
body.layout-transitioning .day-header,
body.layout-transitioning .day-header-date,
body.layout-transitioning .day-header::before,
body.layout-transitioning .today-badge,
body.layout-transitioning .lesson-row,
body.layout-transitioning .lesson-time,
body.layout-transitioning .lesson-number,
body.layout-transitioning .lesson-details,
body.layout-transitioning .lesson-subject,
body.layout-transitioning .lesson-meta,
body.layout-transitioning .meta-item,
body.layout-transitioning .break-row,
body.layout-transitioning .end-of-schedule,
body.layout-transitioning .week-separator {
    transition: padding 0.65s cubic-bezier(0.25, 1, 0.5, 1),
                margin 0.65s cubic-bezier(0.25, 1, 0.5, 1),
                gap 0.65s cubic-bezier(0.25, 1, 0.5, 1),
                font-size 0.65s cubic-bezier(0.25, 1, 0.5, 1),
                width 0.65s cubic-bezier(0.25, 1, 0.5, 1),
                height 0.65s cubic-bezier(0.25, 1, 0.5, 1),
                line-height 0.65s cubic-bezier(0.25, 1, 0.5, 1),
                grid-template-columns 0.65s cubic-bezier(0.25, 1, 0.5, 1),
                background-color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Фоновые цвета и тени плавно всегда (для смены темы) */
.app-container,
.sticky-controls,
.schedule-grid,
.day-container,
.day-header,
.lesson-row,
.lesson-time,
.lesson-details,
.meta-item,
.break-row,
.end-of-schedule,
.week-separator {
    transition: background-color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.lesson-number,
.lesson-subject,
.lesson-meta,
.lesson-time > *,
.lesson-details > * {
    transition: transform 0.25s ease,
                background-color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Previous days smooth collapse/expand animation with blur & scale */
.day-container.is-past-day {
    max-height: 800px;
    opacity: 1;
    margin-bottom: 0;
    transform: scale(1) translateY(0);
    filter: blur(0);
    overflow: hidden;
    transition: max-height 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                margin-bottom 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.65s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.75s cubic-bezier(0.16, 1, 0.3, 1),
                filter 0.65s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.week-separator.past-separator {
    max-height: 80px;
    opacity: 1;
    margin: 2.5rem 0 1rem;
    transform: scale(1) translateY(0);
    filter: blur(0);
    overflow: hidden;
    transition: max-height 0.7s cubic-bezier(0.4, 0, 0.2, 1),
                margin 0.7s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.65s cubic-bezier(0.16, 1, 0.3, 1),
                filter 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

body:not(.show-prev-days) .day-container.is-past-day {
    max-height: 0 !important;
    opacity: 0 !important;
    margin-bottom: -2rem !important;
    border-color: transparent !important;
    pointer-events: none !important;
    transform: scale(0.97) translateY(-12px) !important;
    filter: blur(8px) !important;
    transition: max-height 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                margin-bottom 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.55s ease,
                transform 0.75s cubic-bezier(0.16, 1, 0.3, 1),
                filter 0.55s ease,
                border-color 0.4s ease;
}

body:not(.show-prev-days) .week-separator.past-separator {
    max-height: 0 !important;
    opacity: 0 !important;
    margin-top: -2rem !important;
    margin-bottom: 0 !important;
    pointer-events: none !important;
    transform: scale(0.97) translateY(-8px) !important;
    filter: blur(8px) !important;
    transition: max-height 0.7s cubic-bezier(0.4, 0, 0.2, 1),
                margin 0.7s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.5s ease,
                transform 0.65s cubic-bezier(0.16, 1, 0.3, 1),
                filter 0.5s ease;
}

body.compact-mode:not(.show-prev-days) .day-container.is-past-day {
    margin-bottom: -1.15rem !important;
}

body.compact-mode:not(.show-prev-days) .week-separator.past-separator {
    margin-top: -1.15rem !important;
}

@media (max-width: 640px) {
    body.compact-mode:not(.show-prev-days) .day-container.is-past-day {
        margin-bottom: -0.85rem !important;
    }
    body.compact-mode:not(.show-prev-days) .week-separator.past-separator {
        margin-top: -0.85rem !important;
    }
}

/* ==========================================================================
   COMPACT MODE
   ========================================================================== */
body.compact-mode .app-container {
    padding-top: 1.5rem;
}

body.compact-mode .sticky-controls {
    margin-bottom: 1.6rem;
}

body.compact-mode .schedule-grid {
    gap: 1.15rem;
}

body.compact-mode .week-separator {
    margin: 1.25rem 0 0.5rem;
    font-size: 0.75rem;
}

body.compact-mode .day-header {
    padding: 0.75rem 1.25rem;
    font-size: 0.8125rem;
    gap: 0.6rem;
}

body.compact-mode .day-header::before {
    width: 6px;
    height: 6px;
}

body.compact-mode .day-container.is-today .day-header::before {
    width: 10px;
    height: 10px;
}

body.compact-mode .today-badge {
    padding: 0.15rem 0.5rem;
    font-size: 0.68rem;
}

body.compact-mode .lesson-row {
    grid-template-columns: 105px 1fr;
}

body.compact-mode .lesson-time {
    padding: 0.85rem 0.5rem;
    font-size: 0.78rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

body.compact-mode .lesson-time-display {
    gap: 0.05rem;
}

body.compact-mode .time-item {
    font-size: 0.75rem;
}

body.compact-mode .time-ampm {
    font-size: inherit;
    padding: 0;
}

body.compact-mode .time-separator {
    font-size: 0.55rem;
}

body.compact-mode .lesson-number {
    width: 1.85rem;
    height: 1.85rem;
    font-size: 0.95rem;
    border-radius: 6px;
    margin-bottom: 0.35rem;
    flex-shrink: 0;
}

body.compact-mode .lesson-details {
    padding: 0.85rem 1.25rem;
    gap: 0.35rem;
}

body.compact-mode .lesson-subject {
    font-size: 0.975rem;
    margin-bottom: 0.2rem;
    line-height: 1.35;
}

body.compact-mode .lesson-meta {
    font-size: 0.8125rem;
}

body.compact-mode .meta-item {
    gap: 0.35rem;
    padding-right: 0.75rem;
}

body.compact-mode .meta-item:not(:first-child) {
    padding-left: 0.75rem;
}

body.compact-mode .current-lesson-badge.active {
    margin-top: 0.3rem;
    font-size: 0.7rem;
    max-height: 32px;
}

body.compact-mode .break-row.active {
    height: 2.15rem;
    font-size: 0.78rem;
}

body.compact-mode .end-of-schedule {
    padding: 1.5rem 0.5rem;
    font-size: 0.82rem;
}

@media (max-width: 640px) {
    body.compact-mode .lesson-row {
        grid-template-columns: 1fr;
    }

    body.compact-mode .lesson-time {
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
        gap: 0.75rem;
        padding: 0.6rem 1rem;
        border-right: none;
        border-bottom: 1px solid var(--card-border);
        font-size: 0.8rem;
    }

    body.compact-mode .lesson-time-display {
        flex-direction: row;
        gap: 0.35rem;
    }

    body.compact-mode .lesson-number {
        margin-bottom: 0;
        width: 1.75rem;
        height: 1.75rem;
        font-size: 0.95rem;
        flex-shrink: 0;
    }

    body.compact-mode .lesson-details {
        padding: 0.75rem 1rem;
        gap: 0.35rem;
    }

    body.compact-mode .meta-item {
        margin-bottom: 0.25rem;
    }

    body.compact-mode .schedule-grid {
        gap: 0.85rem;
    }

    body.compact-mode .day-header {
        padding: 0.65rem 1rem;
    }
}

.past-days-notice {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem 1.25rem;
    margin: 1rem 0;
    background: var(--card-bg, rgba(255, 255, 255, 0.05));
    border: 1px solid var(--card-border, rgba(255, 255, 255, 0.1));
    border-radius: 16px;
    text-align: center;
}

body.show-prev-days .past-days-notice {
    display: none;
}

.past-notice-text {
    font-size: 0.95rem;
    color: var(--text-muted, #94a3b8);
    line-height: 1.4;
}

.past-notice-btn {
    padding: 0.55rem 1.15rem;
    background: var(--accent-color, #3b82f6);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.15s;
    font-family: inherit;
}

.past-notice-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.past-notice-btn:active {
    transform: scale(0.98);
}