:root {
    --bg: #f1f5f9;
    --card: rgba(255, 255, 255, 0.65);
    --text: #0f172a;
    --border: rgba(203, 213, 225, 0.5);
    --header: #1d4ed8;
    --primary-color: #2563eb;
    --primary-hover: #1e40af;
    --day-line: #2563eb;
    --break-bg: rgba(226, 232, 240, 0.65);
    --hover: rgba(226, 232, 240, 0.65);
    --thead-bg: #3b82f6;
    --current-color: rgba(16, 185, 129, 0.15);
    --current-border: #059669;
    --next-color: rgba(245, 158, 11, 0.15);
    --next-border: #d97706;
    --row-hover: rgba(59, 130, 246, 0.08);
    --cell-hover: rgba(59, 130, 246, 0.15);
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 12px 28px rgba(37, 99, 235, 0.25);
    --glass-blur: blur(16px);
}

.dark {
    --bg: #0f172a;
    --card: rgba(30, 41, 59, 0.65);
    --text: #f8fafc;
    --border: rgba(71, 85, 105, 0.5);
    --header: #60a5fa;
    --primary-color: #60a5fa;
    --primary-hover: #93c5fd;
    --day-line: #60a5fa;
    --break-bg: rgba(51, 65, 85, 0.65);
    --hover: rgba(51, 65, 85, 0.65);
    --thead-bg: #2563eb;
    --current-color: rgba(16, 185, 129, 0.25);
    --current-border: #10b981;
    --next-color: rgba(245, 158, 11, 0.25);
    --next-border: #f59e0b;
    --row-hover: rgba(96, 165, 250, 0.15);
    --cell-hover: rgba(96, 165, 250, 0.25);
    --shadow-glow: 0 12px 28px rgba(96, 165, 250, 0.35);
}

html,
body {
    min-height: 100vh;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    margin: 20px;
    transition: background-color var(--transition-smooth), color var(--transition-smooth);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
    overflow-x: hidden;
}

/* --- BACKGROUND EMOJIS --- */
.bg-emojis {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    z-index: -1;
    pointer-events: none;
    opacity: 0.5;
}

body.dark .bg-emojis {
    opacity: 0.2;
}

.bg-emojis .emoji {
    position: absolute;
    font-size: 3rem;
    filter: blur(2px);
    animation: floatEmoji 20s infinite ease-in-out alternate;
    will-change: transform;
    user-select: none;
}

.e1 {
    top: 10%;
    left: 5%;
    animation-duration: 25s;
}

.e2 {
    top: 20%;
    right: 10%;
    animation-duration: 22s;
    font-size: 4rem;
    animation-delay: -5s;
}

.e3 {
    top: 70%;
    left: 15%;
    animation-duration: 28s;
    font-size: 2.5rem;
    animation-delay: -10s;
}

.e4 {
    top: 80%;
    right: 5%;
    animation-duration: 24s;
    font-size: 5rem;
    animation-delay: -2s;
}

.e5 {
    top: 40%;
    left: 20%;
    animation-duration: 26s;
    font-size: 3.5rem;
    animation-delay: -8s;
}

.e6 {
    top: 50%;
    right: 25%;
    animation-duration: 23s;
    font-size: 3rem;
    animation-delay: -15s;
}

.e7 {
    top: 5%;
    left: 45%;
    animation-duration: 27s;
    font-size: 4.5rem;
    animation-delay: -12s;
}

.e8 {
    top: 85%;
    left: 40%;
    animation-duration: 21s;
    font-size: 3.5rem;
    animation-delay: -7s;
}

@keyframes floatEmoji {
    0% {
        transform: translate(0, 0) rotate(0deg) scale(1);
    }

    33% {
        transform: translate(30px, -40px) rotate(10deg) scale(1.1);
    }

    66% {
        transform: translate(-20px, 20px) rotate(-10deg) scale(0.9);
    }

    100% {
        transform: translate(40px, 30px) rotate(5deg) scale(1.05);
    }
}

#header {
    position: relative;
    max-width: 1100px;
    margin: 0 auto 18px;
    padding: 14px 20px;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.10), rgba(59, 130, 246, 0));
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 18px;
    border: 1px solid rgba(59, 130, 246, 0.15);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-smooth);
}

body.dark #header {
    background: linear-gradient(135deg, rgba(30, 144, 255, 0.18), rgba(30, 144, 255, 0.05));
    border-color: rgba(30, 144, 255, 0.28);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

#header::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    background: radial-gradient(circle at top left, rgba(30, 144, 255, 0.22), transparent 55%);
    opacity: 0.7;
}

#header .title-block {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 70%;
    z-index: 1;
}

#header h1 {
    margin: 0;
    font-size: 28px;
    line-height: 1.2;
    letter-spacing: 0.4px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

#header h1 .view-title {
    font-weight: 700;
}

#header h1 .view-badge {
    font-size: 18px;
    color: #fff;
    background: linear-gradient(135deg, #ff7b7b, #ff3d3d);
    padding: 3px 14px 4px;
    border-radius: 999px;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    box-shadow: 0 10px 26px rgba(255, 61, 61, 0.28);
}

body.dark #header h1 .view-badge {
    background: linear-gradient(135deg, #ff5252, #ff1e4d);
    box-shadow: 0 12px 30px rgba(255, 62, 86, 0.45);
}

/* --- HEADER META (Animated via JS mostly) --- */
#headerMeta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: space-between;
    margin: 0;
    padding: 0;
    /* JS управляет opacity/transform для входа/выхода */
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity 0.4s ease, transform 0.45s ease;
}

#headerMeta .meta-panel {
    margin: 0;
    padding: 14px 18px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid rgba(30, 144, 255, 0.18);
    box-shadow: 0 18px 34px rgba(15, 23, 42, 0.08);
    display: flex;
    flex-direction: column;
    gap: 6px;
    color: var(--text);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-smooth);
}

#headerMeta .meta-panel:hover,
#headerMeta .meta-panel:focus-within {
    transform: translateY(-4px) scale(1.01);
    box-shadow: 0 24px 42px rgba(15, 23, 42, 0.12);
}

body.dark #headerMeta .meta-panel {
    background: rgba(15, 23, 42, 0.78);
    border-color: rgba(94, 168, 255, 0.32);
    color: rgba(240, 244, 255, 0.9);
    box-shadow: 0 22px 42px rgba(0, 0, 0, 0.5);
}

body.dark #headerMeta .meta-panel:hover,
body.dark #headerMeta .meta-panel:focus-within {
    box-shadow: 0 28px 50px rgba(0, 0, 0, 0.6);
}

#headerMeta .meta-heading {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 15px;
}

#headerMeta .meta-heading .meta-stamp {
    font-weight: 500;
    font-size: 13px;
    opacity: 0.75;
}

body.dark #headerMeta .meta-heading .meta-stamp {
    color: rgba(222, 235, 255, 0.88);
    opacity: 0.85;
}

#headerMeta .meta-tag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 10px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--header), rgba(30, 144, 255, 0.72));
    color: #fff;
    font-size: 12px;
    letter-spacing: 0.6px;
    text-transform: uppercase;
}

body.dark #headerMeta .meta-tag {
    background: linear-gradient(135deg, rgba(94, 168, 255, 0.92), rgba(30, 144, 255, 0.72));
    color: #0f172a;
}

#headerMeta p {
    margin: 0;
    font-size: 15px;
    line-height: 1.4;
}

#headerMeta .meta-main {
    font-weight: 600;
}

#headerMeta .meta-note {
    font-size: 13px;
    opacity: 0.85;
}

#headerMeta .meta-panel.state-now .meta-tag {
    background: linear-gradient(135deg, #2dd07d, #18a85d);
}

#headerMeta .meta-panel.state-break .meta-tag {
    background: linear-gradient(135deg, #ffc857, #ff9f1c);
    color: #1f1300;
}

#headerMeta .meta-panel.state-next .meta-tag {
    background: linear-gradient(135deg, #4f46e5, #6366f1);
}

#headerMeta .meta-panel.state-done .meta-tag {
    background: linear-gradient(135deg, #ef4444, #f97316);
}

body.is-authenticated #headerMeta {
    opacity: 1;
    transform: translateY(0);
}

/* --- THEME TOGGLE --- */
#themeToggle {
    position: relative;
    z-index: 1;
    padding: 10px 16px;
    background: linear-gradient(135deg, #58b2ff, #1e90ff);
    color: #fff;
    border: none;
    border-radius: 999px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-smooth);
}

#themeToggle:hover,
#themeToggle:focus-visible {
    transform: translateY(-1px);
    box-shadow: 0 12px 26px rgba(30, 144, 255, 0.24);
    outline: none;
    filter: brightness(1.03);
}

#themeToggle:active {
    transform: translateY(0);
}

#themeToggle .theme-icon {
    font-size: 18px;
}

#themeToggle .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* --- VIEW CONTAINER (Main Animation Area) --- */
#viewContainer {
    position: relative;
    max-width: 1100px;
    margin: 0 auto 60px;
}

.view-panel {
    position: relative;
    display: none;
    padding-top: 30px;
    padding-bottom: 60px;
    /* Убраны CSS transitions для panel, т.к. JS анимирует opacity/transform */
}

.view-panel.is-active {
    display: block;
}

#schedule {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    gap: 22px;
    position: relative;
    /* Убраны transition: opacity, из-за них ломается backdrop-filter в Chromium при загрузке */
}

body:not(.is-authenticated) #viewContainer {
    display: none;
}

body:not(.is-authenticated) #schedule {
    pointer-events: none;
    max-height: 0;
    overflow: hidden;
    margin: 0 auto;
}

body.is-authenticated #schedule {
    pointer-events: auto;
    max-height: none;
    margin: 30px auto 60px;
}

/* --- DAY CARD --- */
.day-card {
    position: relative;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: 20px;
    border: 1px solid rgba(59, 130, 246, 0.15);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.day-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.day-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(30, 144, 255, 0.12), rgba(30, 144, 255, 0.04));
    opacity: 1;
    pointer-events: none;
}

body.dark .day-card {
    border-color: rgba(94, 168, 255, 0.32);
    box-shadow: 0 22px 50px rgba(0, 0, 0, 0.5);
}

body.dark .day-card::before {
    background: linear-gradient(140deg, rgba(30, 144, 255, 0.45), rgba(15, 23, 42, 0.68));
}

body.dark .day-header {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.28), rgba(15, 23, 42, 0.72));
    border-bottom-color: rgba(94, 168, 255, 0.32);
}

.day-card>* {
    position: relative;
    z-index: 1;
}

/* Состояния для fallback */
.day-card[data-state="shown"] {
    transform: none;
}

.day-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    padding: 20px 26px;
    background: linear-gradient(135deg, rgba(30, 144, 255, 0.18), rgba(30, 144, 255, 0.05));
    border-radius: 18px 18px 0 0;
    border-bottom: 1px solid rgba(30, 144, 255, 0.25);
    margin-bottom: 0;
}

@keyframes animateIn {
    from {
        opacity: 0.5;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: animateIn 0.3s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

.day-title {
    margin: 0;
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 0.5px;
    color: var(--header);
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 14px;
    flex: 1 1 240px;
}

.day-title .day-name {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 9px 22px 10px;
    border-radius: 999px;
    background: linear-gradient(135deg, rgba(30, 144, 255, 0.92), rgba(26, 116, 219, 0.92));
    color: #f8fafc;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    box-shadow: 0 14px 30px rgba(30, 144, 255, 0.28);
    position: relative;
}

.day-title .day-name::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: inherit;
    border: 2px solid rgba(255, 255, 255, 0.08);
    pointer-events: none;
}

body.dark .day-title .day-name {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.95), rgba(30, 64, 175, 0.95));
    color: rgba(241, 245, 255, 0.96);
    box-shadow: 0 18px 38px rgba(15, 23, 42, 0.45);
}

body.dark .day-title .day-name::after {
    border-color: rgba(94, 168, 255, 0.28);
}

.day-badges {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.day-badge {
    background: rgba(255, 255, 255, 0.74);
    color: var(--header);
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: inset 0 0 0 1px rgba(30, 144, 255, 0.18);
}

.day-badge .emoji {
    font-size: 14px;
}

body.dark .day-badge {
    background: rgba(15, 23, 42, 0.72);
    color: rgba(222, 235, 255, 0.95);
    box-shadow: inset 0 0 0 1px rgba(94, 168, 255, 0.42);
}

.day-body {
    background: transparent;
    border: none;
    box-shadow: none;
    overflow: hidden;
    border-radius: 0;
}

body.dark .day-body {
    background: rgba(15, 23, 42, 0.78);
    border-color: rgba(94, 168, 255, 0.32);
    box-shadow: inset 0 1px 0 rgba(94, 168, 255, 0.24);
}

.day-body::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(30, 144, 255, 0.12), transparent 65%);
    pointer-events: none;
}

.day-body>* {
    position: relative;
    z-index: 1;
}

/* Анимации для содержимого таблицы */
.table-wrap.animate-in,
.table-wrap.animate-out {
    animation-duration: 0.55s;
    animation-timing-function: cubic-bezier(.22, .68, .12, 1.02);
    animation-fill-mode: both;
}

.table-wrap.animate-in {
    animation-name: tableSlideIn;
}

.table-wrap.animate-out {
    animation-name: tableSlideOut;
}

@keyframes tableSlideIn {
    from {
        opacity: 0;
        transform: translateY(24px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes tableSlideOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }

    to {
        opacity: 0;
        transform: translateY(-24px);
    }
}

table {
    width: 100%;
    border-collapse: collapse;
    background: transparent;
    color: var(--text);
    font-size: 15px;
    transition: background-color var(--transition-smooth);
}

thead {
    background: transparent;
    color: inherit;
}

thead tr {
    background: linear-gradient(135deg, rgba(30, 144, 255, 0.12), rgba(30, 144, 255, 0.04));
    border-bottom: 1px solid rgba(30, 144, 255, 0.16);
}

body.dark thead tr {
    background: linear-gradient(135deg, rgba(94, 168, 255, 0.16), rgba(15, 23, 42, 0.75));
    border-bottom: 1px solid rgba(94, 168, 255, 0.28);
}

th {
    position: relative;
    text-transform: uppercase;
    letter-spacing: 0.65px;
    padding: 16px 18px 18px;
    font-size: 16px;
    font-weight: 700;
    border-bottom: 0;
    color: rgba(15, 23, 42, 0.86);
}

body.dark th {
    color: rgba(240, 244, 255, 0.92);
}

th::after {
    content: '';
    display: block;
    height: 3px;
    border-radius: 999px;
    margin-top: 10px;
    background: var(--th-accent, rgba(30, 144, 255, 0.65));
    opacity: 0.9;
}

body.dark th::after {
    background: var(--th-accent, rgba(94, 168, 255, 0.85));
    opacity: 1;
}

th:nth-child(1) {
    --th-accent: #2563eb;
    text-align: left;
    min-width: 140px;
}

th:nth-child(2) {
    --th-accent: #1d4ed8;
    text-align: left;
}

th:nth-child(3) {
    --th-accent: #0ea5e9;
    text-align: center;
}

th:nth-child(4) {
    --th-accent: #6366f1;
    text-align: left;
}

td {
    padding: 14px 18px;
    text-align: left;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
}

td:nth-child(1) {
    font-weight: 700;
    color: var(--header);
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.3px;
}

td.time-cell {
    white-space: nowrap;
}

td.time-cell .time-content {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

td.time-cell .time-sep {
    opacity: 0.65;
}

td.time-cell .time-end {
    font-weight: 600;
}

body.dark td:nth-child(1) {
    color: rgba(94, 168, 255, 0.9);
}

td:nth-child(2) {
    font-weight: 600;
    color: rgba(15, 23, 42, 0.92);
}

body.dark td:nth-child(2) {
    color: rgba(241, 245, 255, 0.95);
}

td:nth-child(3) {
    text-align: center;
    font-weight: 600;
    letter-spacing: 0.35px;
}

td:nth-child(4) {
    font-weight: 500;
    color: rgba(30, 41, 59, 0.82);
}

body.dark td:nth-child(4) {
    color: rgba(203, 213, 225, 0.88);
}

tbody tr+tr td {
    border-top: 1px solid rgba(30, 144, 255, 0.12);
}

body.dark tbody tr+tr td {
    border-top-color: rgba(94, 168, 255, 0.24);
}

tbody td {
    background: rgba(255, 255, 255, 0.2);
    /* Убран backdrop-filter, чтобы не ломался вместе с прозрачностью .day-card (в Chromium вложенные блюры часто конфликтуют) */
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

body.dark tbody td {
    background: rgba(15, 23, 42, 0.3);
}

tbody tr:hover td {
    background: rgba(30, 144, 255, 0.045);
}

body.dark tbody tr:hover td {
    background: rgba(30, 144, 255, 0.12);
}

td:hover {
    background: rgba(30, 144, 255, 0.12) !important;
    color: var(--text);
}

body.dark td:hover {
    background: rgba(30, 144, 255, 0.22) !important;
}

.current-lesson {
    background-color: var(--current-color);
    font-weight: 800;
}

.next-lesson {
    background-color: var(--next-color);
}

.current-lesson td {
    background-color: var(--current-color) !important;
}

.next-lesson td {
    background-color: var(--next-color) !important;
}

.break-row td {
    text-align: center;
    font-style: italic;
    background-color: var(--break-bg) !important;
    color: var(--text);
    border-left: none;
    border-right: none;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    font-weight: 600;
}

.break-row td[colspan] {
    padding: 9px 0;
    font-size: 16px;
}

.break-row:hover td {
    background-color: var(--break-bg) !important;
}

.break-current td {
    background-color: var(--current-color) !important;
    font-style: italic;
    font-weight: bold;
}

.current-lesson td:first-child,
.next-lesson td:first-child {
    position: relative;
}

.current-lesson td:first-child::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 5px;
    height: 100%;
    background-color: var(--current-border);
}

.next-lesson td:first-child::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 5px;
    height: 100%;
    background-color: var(--next-border);
}

tr {
    transition: background-color var(--transition-fast);
}

tr.row-hover td {
    background: var(--row-hover);
    color: var(--text);
    box-shadow: inset 0 0 0 1px rgba(30, 144, 255, 0.14);
}

tr.row-hover td.cell-hover {
    background: var(--cell-hover) !important;
    color: var(--text);
}

#loginForm {
    max-width: 420px;
    margin: auto;
    padding: 28px;
    background: var(--card);
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
    display: block;
    text-align: center;
    transition: transform 0.45s ease, box-shadow 0.45s ease;
    will-change: transform, box-shadow;
}

#loginForm.login-checking {
    box-shadow: 0 16px 42px rgba(30, 144, 255, 0.18);
    transform: translateY(-4px);
    animation: loginPulse 1.4s ease-in-out infinite;
    will-change: transform;
}

#loginForm.login-error {
    animation: loginShake 0.6s cubic-bezier(.36, .07, .19, .97);
    transition: none;
    will-change: transform;
}

@keyframes loginPulse {

    0%,
    100% {
        transform: translateY(-4px) scale(1);
    }

    50% {
        transform: translateY(-5px) scale(1.01);
    }
}

@keyframes loginShake {

    0%,
    100% {
        transform: translateX(0);
    }

    10%,
    90% {
        transform: translateX(-3px);
    }

    20%,
    80% {
        transform: translateX(5px);
    }

    30%,
    50%,
    70% {
        transform: translateX(-7px);
    }

    40%,
    60% {
        transform: translateX(7px);
    }
}

.login-fields {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 8px;
}

#loginForm h2 {
    margin: 0 0 10px;
    font-size: 22px;
}

#loginForm input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--card);
    color: var(--text);
    font-size: 15px;
    box-sizing: border-box;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

#loginForm input:hover {
    border-color: rgba(0, 123, 255, 0.55);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.06);
}

#loginForm input:focus {
    outline: none;
    border-color: rgba(30, 144, 255, 0.8);
    box-shadow: 0 8px 22px rgba(30, 144, 255, 0.14);
}

.login-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 8px;
}

.login-actions .btn {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: none;
    font-size: 15px;
    cursor: pointer;
}

.btn-primary {
    background: var(--header);
    color: #fff;
    position: relative;
}

.btn-primary:hover {
    background: #005fcb;
}

.btn-primary.loading {
    color: transparent;
    pointer-events: none;
}

.btn-primary.loading::after {
    content: "Signing in…";
    color: #fff;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-weight: 600;
    letter-spacing: 0.4px;
}

.btn-primary.loading::before {
    content: "";
    position: absolute;
    left: 12px;
    top: 50%;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-top-color: #fff;
    transform: translateY(-50%);
    animation: spinner 0.8s linear infinite;
}

@keyframes spinner {
    to {
        transform: translateY(-50%) rotate(360deg);
    }
}

.btn-secondary {
    background: #6c757d;
    color: #fff;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn {
    transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

#loginForm p {
    margin-top: 14px;
    font-size: 13px;
    color: var(--text);
}

#loginError {
    color: #ff4d4f;
    margin-top: 10px;
    font-weight: 600;
    min-height: 18px;
}

body:not(.is-authenticated) #logoutBtn {
    opacity: 0;
    transform: translateY(22px) scale(0.9);
    pointer-events: none;
}

#logoutBtn {
    position: fixed;
    bottom: 28px;
    right: 32px;
    padding: 12px 18px;
    background: linear-gradient(135deg, #ff5f6d, #ff3d55);
    color: #fff;
    border: none;
    border-radius: 16px;
    cursor: pointer;
    z-index: 20;
    font-weight: 600;
    letter-spacing: 0.4px;
    box-shadow: 0 18px 32px rgba(255, 61, 85, 0.25);
    opacity: 0;
    transform: translateY(22px) scale(0.9);
    pointer-events: none;
    transition: opacity var(--transition-smooth), transform var(--transition-smooth), box-shadow var(--transition-fast);
    will-change: opacity, transform, box-shadow;
}

#logoutBtn.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
    animation: logoutFloat 6s ease-in-out infinite 0.6s;
}

#logoutBtn:hover,
#logoutBtn:focus-visible {
    box-shadow: 0 22px 40px rgba(255, 61, 85, 0.32);
    outline: none;
}

#logoutBtn:active {
    transform: translateY(2px) scale(0.97);
    animation-play-state: paused;
}

@keyframes logoutFloat {

    0%,
    100% {
        transform: translateY(0) scale(1);
    }

    50% {
        transform: translateY(-6px) scale(1.01);
    }
}

#bar {
    max-width: 1100px;
    margin: 0 auto 18px;
    padding: 0 16px;
    display: none;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 5;
}

#bar.visible {
    display: flex;
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

body:not(.is-authenticated) #bar {
    display: none;
}

#bar.is-unauth {
    justify-content: center;
}

body:not(.is-authenticated) .filter-wrap {
    justify-content: center;
}

body:not(.is-authenticated) #dayFilterBtn,
body:not(.is-authenticated) #dayMenu,
body:not(.is-authenticated) #statusBar {
    display: none !important;
}

body:not(.is-authenticated) #calendarStatus {
    display: none !important;
}

body:not(.is-authenticated) .filter-wrap .view-switch {
    display: none;
}

.filter-wrap {
    position: relative;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.filter-wrap .view-switch {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

#dayFilterBtn {
    padding: 10px 14px;
    border: 1px solid var(--border);
    background: var(--card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    color: var(--header);
    border-radius: 12px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
    will-change: transform, box-shadow;
}

#dayFilterBtn:hover,
#dayFilterBtn:focus-visible {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--header);
    outline: none;
}

#dayFilterBtn:active {
    transform: translateY(0);
}

#dayMenu {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    background: var(--card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    min-width: 210px;
    overflow: hidden;
    z-index: 50;
    opacity: 0;
    transform-origin: top center;
    transform: translateY(-10px) scaleY(0.75);
    pointer-events: none;
    transition: opacity 0.24s ease, transform 0.28s cubic-bezier(.22, .68, .12, 1.02);
    clip-path: inset(-12px -12px 0 -12px round 20px);
    will-change: opacity, transform;
}

#dayMenu.open {
    opacity: 1;
    transform: translateY(0) scaleY(1);
    pointer-events: auto;
}

#dayMenu button {
    display: block;
    width: 100%;
    text-align: left;
    padding: 11px 16px;
    background: transparent;
    border: none;
    cursor: pointer;
    font-weight: 500;
    color: var(--text);
    transition: background 0.2s ease, padding-left 0.2s ease;
}

.view-toggle {
    padding: 10px 14px;
    border: 1px solid var(--border);
    background: var(--card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    color: var(--text);
    border-radius: 12px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast);
    will-change: transform, box-shadow;
}

.view-toggle:hover,
.view-toggle:focus-visible {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--header);
    outline: none;
}

.view-toggle:active {
    transform: translateY(0);
}

.view-toggle.active {
    background: linear-gradient(135deg, var(--header), rgba(30, 144, 255, 0.72));
    color: #fff;
    border-color: transparent;
    box-shadow: 0 16px 32px rgba(30, 144, 255, 0.28);
}

body.dark .view-toggle.active {
    color: #0f172a;
}

.view-toggle:disabled,
.view-toggle[aria-disabled='true'] {
    cursor: default;
    opacity: 0.75;
    transform: none;
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
}

.view-toggle.active:disabled {
    opacity: 1;
}

#dayMenu button.active {
    background: rgba(30, 144, 255, 0.1);
    color: var(--header);
    font-weight: 600;
}

#dayMenu button:hover {
    background: var(--hover);
    padding-left: 20px;
}

#statusBar {
    font-size: 15px;
    padding: 12px 16px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    color: var(--text);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 10px;
    line-height: 1.4;
    transition: all 0.3s ease;
}

#statusBar {
    display: none !important;
}

#statusBar::before {
    font-size: 18px;
}

#statusBar .sb-tag {
    background: var(--header);
    color: #fff;
    font-weight: 600;
    border-radius: 6px;
    padding: 3px 8px;
    font-size: 13px;
}

#statusBar .sb-title {
    font-weight: 600;
}

#statusBar .sb-count,
#statusBar .sb-time {
    font-weight: 700;
    color: var(--header);
}

#statusBar.in-lesson {
    border-left: 4px solid #28a745;
}

#statusBar.in-break {
    border-left: 4px solid #ffc107;
}

#statusBar.before {
    border-left: 4px solid var(--header);
}

#statusBar.done {
    border-left: 4px solid #dc3545;
    opacity: .9;
}

#statusBar.in-lesson::before {
    content: "📘";
}

#statusBar.in-break::before {
    content: "☕";
}

#statusBar.before::before {
    content: "⏰";
}

#statusBar.done::before {
    content: "🎉";
}

.no-classes {
    text-align: center;
    background: rgba(30, 144, 255, 0.06);
    border: 1px dashed var(--border);
    color: var(--text);
    border-radius: 14px;
    padding: 28px 0;
    margin: 12px 0 24px;
    font-size: 15px;
    opacity: 0.92;
    transition: opacity 0.3s ease;
}

body.dark .no-classes {
    background: var(--card);
    border-color: var(--border);
    color: var(--text);
}

#dayMenu {
    background: var(--card);
    border-color: var(--border);
    color: var(--text);
}

#dayMenu button {
    color: var(--text) !important;
    background: transparent;
}

#dayMenu button:hover {
    background: var(--hover);
    color: var(--text);
}

#dayMenu button:focus-visible {
    outline: 2px solid var(--header);
    outline-offset: 2px;
}

#loginForm {
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

#loginForm.login-intro {
    animation: fadeIn 0.8s ease both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

#loginForm input:focus {
    border-color: rgba(30, 144, 255, 0.8);
    box-shadow: 0 8px 22px rgba(30, 144, 255, 0.14);
}

#loginForm h2 {
    letter-spacing: 0.5px;
    color: var(--header);
}

.btn-primary {
    background: var(--header);
    color: #fff;
    border: none;
    transition: background 0.25s ease, transform 0.2s ease, box-shadow 0.2s ease;
    will-change: background;
    position: relative;
}

.btn-primary:disabled {
    background: #6c757d;
    cursor: not-allowed;
    opacity: 0.8;
    box-shadow: none;
    transform: none;
}

body.dark .btn-primary:not(:disabled) {
    background: var(--header);
}

@media (max-width: 768px) {
    #header {
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
        padding: 18px;
    }

    #header::after {
        opacity: 0.45;
    }

    #header .title-block {
        max-width: 100%;
    }

    #headerMeta {
        width: 100%;
        flex-direction: column;
    }

    #themeToggle {
        align-self: flex-end;
        padding: 8px 12px;
    }

    #logoutBtn {
        bottom: 10px;
        padding: 6px 12px;
        font-size: 14px;
    }

    #bar {
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
    }

    .filter-wrap {
        width: 100%;
        justify-content: space-between;
    }

    .filter-wrap .view-switch {
        width: 100%;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }

    .view-toggle {
        justify-content: center;
    }

    #dayFilterBtn {
        flex: 1 1 160px;
    }

    #statusBar,
    #calendarStatus {
        width: 100%;
        text-align: left;
    }

    #viewContainer,
    #schedule,
    #calendarMain {
        margin-left: 16px;
        margin-right: 16px;
    }

    #calendarMain {
        margin-top: 20px;
        margin-bottom: 40px;
        padding: 0 8px 28px;
    }
}

@media (max-width: 480px) {
    #loginForm {
        margin: 16px;
        padding: 18px;
    }

    #schedule {
        padding-bottom: 60px;
    }

    #statusBar {
        flex-wrap: wrap;
        text-align: center;
        gap: 6px;
    }
}

@media print {

    #themeToggle,
    #logoutBtn,
    #loginForm,
    #bar {
        display: none !important
    }

    body {
        margin: 0
    }

    h2 {
        margin-top: 10px
    }
}

@media (max-width: 600px) {
    .day-body {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .day-body table {
        width: 100%;
        min-width: unset;
        border-radius: 10px;
    }

    table th,
    table td {
        font-size: 13px;
        padding: 6px;
        white-space: normal;
    }

    table th:first-child {
        min-width: 88px;
        width: auto;
        text-align: left;
    }

    table td.time-cell {
        font-size: 12px;
        line-height: 1.3;
        white-space: normal;
    }

    table td.time-cell .time-content {
        display: grid;
        grid-template-columns: 1fr;
        gap: 2px;
    }

    table td.time-cell .time-sep {
        display: none;
    }

    table td.time-cell .time-end::before {
        content: '→ ';
        font-size: 11px;
        opacity: 0.7;
        margin-right: 2px;
    }

    .day-title {
        font-size: 18px;
        margin: 0;
    }

    #statusBar {
        font-size: 14px;
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
}

.calendar-subtitle {
    margin: 0;
    font-size: 16px;
    color: rgba(15, 23, 42, 0.78);
    max-width: 580px;
}

body.dark .calendar-subtitle {
    color: rgba(240, 244, 255, 0.78);
}

body[data-view="calendar"] #viewBadge {
    display: none;
}

body[data-view="calendar"] #calendarSubtitle {
    display: block !important;
}

body[data-view="calendar"] #dayFilterBtn {
    pointer-events: none;
    opacity: 0;
    transform: translateY(-10px);
    visibility: hidden;
}

body[data-view="calendar"] #dayMenu {
    display: none !important;
}

body[data-view="calendar"] #statusBar {
    display: none;
}

body[data-view="timetable"] #calendarStatus {
    display: none;
}

body[data-view="calendar"] #calendarStatus {
    display: block;
}

.calendar-nav-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 18px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--header), rgba(59, 130, 246, 0.7));
    color: #fff;
    font-weight: 600;
    text-decoration: none;
    box-shadow: var(--shadow-glow);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.calendar-nav-link:hover,
.calendar-nav-link:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 16px 36px rgba(59, 130, 246, 0.35);
    outline: none;
}

body.dark .calendar-nav-link {
    color: #0f172a;
    box-shadow: 0 20px 44px rgba(30, 144, 255, 0.35);
}

#calendarMain {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 16px 40px;
}

.calendar-sections {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.calendar-section {
    background: var(--card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 28px 30px;
    box-shadow: var(--shadow-sm);
}

body.dark .calendar-section {
    box-shadow: 0 28px 58px rgba(0, 0, 0, 0.55);
}

.calendar-section-title {
    margin: 0 0 22px;
    font-size: 22px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.calendar-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

.calendar-card {
    --accent: var(--header);
    background: rgba(255, 255, 255, 0.35);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border);
    border-top: 4px solid var(--accent);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
    will-change: transform, box-shadow;
}

body.dark .calendar-card {
    background: rgba(15, 23, 42, 0.45);
}

.calendar-card:hover,
.calendar-card:focus-within {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08), 0 4px 12px color-mix(in srgb, var(--accent) 15%, transparent);
    border-color: color-mix(in srgb, var(--accent) 40%, transparent);
}

body.dark .calendar-card:hover,
body.dark .calendar-card:focus-within {
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3), 0 4px 12px color-mix(in srgb, var(--accent) 15%, transparent);
    border-color: color-mix(in srgb, var(--accent) 40%, transparent);
}

.calendar-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.calendar-semester-badge {
    background: rgba(30, 144, 255, 0.12);
    color: var(--header);
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

body.dark .calendar-semester-badge {
    background: rgba(94, 168, 255, 0.24);
    color: rgba(222, 235, 255, 0.9);
}

.calendar-type-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(15, 23, 42, 0.04);
    color: var(--text);
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

body.dark .calendar-type-badge {
    background: rgba(255, 255, 255, 0.06);
    color: rgba(240, 244, 255, 0.9);
}

.calendar-type-badge .badge-icon {
    font-size: 16px;
    line-height: 1;
}

.calendar-card-title {
    margin: 0;
    font-size: 18px;
    line-height: 1.4;
}

.calendar-card-range {
    margin: 0;
    font-weight: 600;
    font-size: 16px;
}

.calendar-card-detail {
    margin: 0;
    font-size: 14px;
    color: rgba(15, 23, 42, 0.75);
}

body.dark .calendar-card-detail {
    color: rgba(240, 244, 255, 0.75);
}

.calendar-card.is-start {
    --accent: #16a34a;
}

.calendar-card.is-break {
    --accent: #f59e0b;
}

.calendar-card.is-review {
    --accent: #6b7280;
}

.calendar-card.is-exams {
    --accent: #dc2626;
}

.calendar-card.is-end {
    --accent: #0ea5e9;
}

.calendar-card.is-holiday {
    --accent: #8b5cf6;
}

.calendar-card.is-event {
    --accent: var(--header);
}

.calendar-loading,
.calendar-error,
.calendar-empty {
    text-align: center;
    margin: 60px auto;
    max-width: 520px;
    padding: 24px;
    border-radius: 18px;
    background: rgba(30, 144, 255, 0.06);
    border: 1px dashed var(--border);
    font-size: 16px;
}

body.dark .calendar-loading,
body.dark .calendar-error,
body.dark .calendar-empty {
    background: rgba(15, 23, 42, 0.35);
    border-color: rgba(148, 163, 184, 0.35);
}

.calendar-error {
    border-color: rgba(239, 68, 68, 0.35);
    color: #b91c1c;
}

body.dark .calendar-error {
    color: #fecaca;
}

#calendarStatus {
    font-size: 15px;
    padding: 10px 16px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--text);
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
}

@media (max-width: 640px) {
    .calendar-section {
        padding: 22px 20px;
    }

    .calendar-grid {
        grid-template-columns: minmax(0, 1fr);
    }
}

.calendar-card.is-start .calendar-type-badge {
    background: rgba(22, 163, 74, 0.16);
    color: #166534;
}

body.dark .calendar-card.is-start .calendar-type-badge {
    background: rgba(34, 197, 94, 0.28);
    color: #bbf7d0;
}

.calendar-card.is-break .calendar-type-badge {
    background: rgba(245, 158, 11, 0.18);
    color: #b45309;
}

body.dark .calendar-card.is-break .calendar-type-badge {
    background: rgba(245, 158, 11, 0.28);
    color: #fde68a;
}

.calendar-card.is-review .calendar-type-badge {
    background: rgba(107, 114, 128, 0.2);
    color: #374151;
}

body.dark .calendar-card.is-review .calendar-type-badge {
    background: rgba(107, 114, 128, 0.32);
    color: #e5e7eb;
}

.calendar-card.is-exams .calendar-type-badge {
    background: rgba(220, 38, 38, 0.18);
    color: #b91c1c;
}

body.dark .calendar-card.is-exams .calendar-type-badge {
    background: rgba(248, 113, 113, 0.32);
    color: #fee2e2;
}

.calendar-card.is-end .calendar-type-badge {
    background: rgba(14, 165, 233, 0.18);
    color: #0369a1;
}

body.dark .calendar-card.is-end .calendar-type-badge {
    background: rgba(56, 189, 248, 0.28);
    color: #bae6fd;
}

.calendar-card.is-holiday .calendar-type-badge {
    background: rgba(139, 92, 246, 0.2);
    color: #5b21b6;
}

body.dark .calendar-card.is-holiday .calendar-type-badge {
    background: rgba(167, 139, 250, 0.34);
    color: #ede9fe;
}

.calendar-card.is-event .calendar-type-badge {
    background: rgba(30, 144, 255, 0.16);
    color: var(--header);
}

body.dark .calendar-card.is-event .calendar-type-badge {
    background: rgba(94, 168, 255, 0.3);
    color: rgba(222, 235, 255, 0.92);
}