/* ============================================================
   ЕКЦ График — Unified Stylesheet
   Single source of truth. No Tailwind CDN.
   ============================================================ */

/* ===== TOKENS ===== */
:root {
    /* Colors — Apple-inspired, WCAG-safe */
    --blue-50: #eff6ff;
    --blue-100: #dbeafe;
    --blue-500: #3b82f6;
    --blue-600: #2563eb;
    --blue-700: #1d4ed8;
    --blue-800: #1e40af;

    --green-50: #f0fdf4;
    --green-100: #dcfce7;
    --green-500: #22c55e;
    --green-600: #16a34a;
    --green-700: #15803d;

    --orange-50: #fff7ed;
    --orange-100: #ffedd5;
    --orange-500: #f97316;
    --orange-600: #ea580c;
    --orange-700: #c2410c;

    --red-50: #fef2f2;
    --red-100: #fecaca;
    --red-400: #f87171;
    --red-500: #ef4444;
    --red-600: #dc2626;
    --red-700: #b91c1c;

    --purple-50: #faf5ff;
    --purple-100: #f3e8ff;
    --purple-500: #a855f7;
    --purple-600: #9333ea;

    --pink-50: #fdf2f8;
    --pink-100: #fce7f3;
    --pink-500: #ec4899;
    --pink-600: #db2777;

    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* Semantic aliases */
    --bg: var(--gray-50);
    --card: #ffffff;
    --soft: #f1f5fb;
    --line: var(--gray-200);
    --text: var(--gray-900);
    --muted: var(--gray-500);
    --primary: var(--blue-600);
    --primary-dark: var(--blue-700);
    --primary-soft: var(--blue-50);
    --success: var(--green-600);
    --success-soft: var(--green-50);
    --warning: var(--orange-600);
    --warning-soft: var(--orange-50);
    --danger: var(--red-600);
    --danger-soft: var(--red-50);
    --weekend: #fff8e1;
    --holiday: #ffe8e8;
    --vacation: #e8f5e9;

    /* Elevation */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);

    /* Radii */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;

    /* Motion */
    --ease: 200ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Focus */
    --focus-ring-color: var(--blue-500);

    /* Typography */
    font-family: 'DM Sans', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: ui-monospace, 'SF Mono', 'Cascadia Code', Consolas, monospace;
}

/* ===== RESET ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
}

body,
.app-body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, p {
    margin: 0;
}

a {
    transition: color var(--ease), background var(--ease), box-shadow var(--ease);
}

button {
    cursor: pointer;
    transition: all var(--ease);
}

input, select, textarea {
    font: inherit;
    transition: border-color var(--ease), box-shadow var(--ease), background var(--ease);
}

/* ===== FOCUS ===== */
:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--focus-ring-color) 32%, transparent);
    outline-offset: 2px;
}

/* ============================================================
   LAYOUT
   ============================================================ */

.page-shell {
    width: min(1080px, calc(100% - 32px));
    margin-left: auto;
    margin-right: auto;
}

.page {
    padding: 20px 0 48px;
    display: grid;
    gap: 20px;
}

.main-content {
    margin-left: auto;
    margin-right: auto;
}

/* ============================================================
   SIDEBAR
   ============================================================ */

.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 260px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid rgba(0, 0, 0, 0.06);
    display: flex;
    flex-direction: column;
    padding: 24px;
    z-index: 80;
    transition: transform 300ms ease;
}

.sidebar__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.sidebar__logo-icon {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    border-radius: 8px;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.75rem;
    font-weight: 800;
}

.sidebar__logo-text {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--gray-900);
}

.sidebar__logo-sub {
    font-size: 0.75rem;
    color: var(--muted);
    margin-top: 2px;
}

/* Hamburger toggle — hidden on desktop */
.hamburger-toggle {
    display: none;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 90;
    width: 44px;
    height: 44px;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--card);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    padding: 0;
    align-items: center;
    justify-content: center;
}

.hamburger-toggle__bar {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    position: relative;
    transition: all 250ms ease;
}

.hamburger-toggle__bar::before,
.hamburger-toggle__bar::after {
    content: '';
    position: absolute;
    left: 0;
    width: 22px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: all 250ms ease;
}

.hamburger-toggle__bar::before { top: -7px; }
.hamburger-toggle__bar::after { top: 7px; }

.hamburger-toggle[aria-expanded="true"] .hamburger-toggle__bar {
    background: transparent;
}

.hamburger-toggle[aria-expanded="true"] .hamburger-toggle__bar::before {
    top: 0;
    transform: rotate(45deg);
}

.hamburger-toggle[aria-expanded="true"] .hamburger-toggle__bar::after {
    top: 0;
    transform: rotate(-45deg);
}

/* Mobile sidebar overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 75;
}

/* Nav items */
.sidebar__nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
    overflow-y: auto;
}

.sidebar__nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-600);
    text-decoration: none;
    transition: background var(--ease), color var(--ease);
}

.sidebar__nav-item:hover {
    background: color-mix(in srgb, var(--primary) 8%, transparent);
    color: var(--primary);
}

.sidebar__nav-item.active {
    background: var(--primary);
    color: white;
    font-weight: 600;
}

.sidebar__nav-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    flex-shrink: 0;
}

/* Sidebar footer area */
.sidebar__user {
    padding-top: 16px;
    border-top: 1px solid var(--gray-200);
    margin-top: 12px;
}

.sidebar__user-role {
    font-size: 0.78rem;
    color: var(--muted);
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 10px;
}

.sidebar__bottom {
    margin-top: auto;
    padding-top: 12px;
    border-top: 1px solid var(--gray-100);
}

.sidebar__period {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar__period select {
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--gray-200);
    background: var(--card);
    font-size: 0.85rem;
    width: 100%;
}

.sidebar__period-note {
    font-size: 0.7rem;
    color: var(--gray-400);
    text-align: center;
}

/* ============================================================
   MAIN CONTENT AREA (offset for sidebar)
   ============================================================ */

.content-wrapper {
    margin-left: 260px;
    padding: 28px 32px 48px;
    min-height: 100vh;
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 28px;
    animation: fadeIn 300ms ease both;
}

.content-header__title {
    font-size: clamp(1.5rem, 3vw, 1.85rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.content-header__subtitle {
    font-size: 0.95rem;
    color: var(--muted);
    margin-top: 4px;
}

.content-header__subtitle {
    font-size: 0.95rem;
    color: var(--muted);
    margin-top: 4px;
}

.content-main {
    animation: fadeIn 300ms ease 60ms both;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   CARDS
   ============================================================ */

.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 22px 24px;
    animation: cardSlideUp 250ms ease both;
    transition: box-shadow var(--ease), transform var(--ease);
}

.card + .card { animation-delay: 50ms; }

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.card--hero {
    background: linear-gradient(165deg, var(--card) 0%, var(--blue-50) 100%);
    border-color: color-mix(in srgb, var(--primary) 12%, var(--line));
}

.card--quiet {
    background: var(--soft);
    box-shadow: none;
}

.card:hover { box-shadow: var(--shadow-md); }

.card__title {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--gray-800);
}

.card__subtitle {
    font-size: 0.88rem;
    color: var(--muted);
    margin-bottom: 14px;
}

.card__body {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

@keyframes cardSlideUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   STAT CARDS
   ============================================================ */

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    padding: 18px 20px;
    border-radius: var(--radius-lg);
    background: var(--card);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
    transition: all var(--ease);
}

.stat-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}

.stat-card__label {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--muted);
    margin-bottom: 4px;
}

.stat-card__value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1.1;
}

.stat-card__icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.stat-card--blue .stat-card__icon { background: var(--blue-100); color: var(--blue-600); }
.stat-card--green .stat-card__icon { background: var(--green-100); color: var(--green-600); }
.stat-card--orange .stat-card__icon { background: var(--orange-100); color: var(--orange-600); }
.stat-card--red .stat-card__icon { background: var(--red-100); color: var(--red-600); }
.stat-card--purple .stat-card__icon { background: var(--purple-100); color: var(--purple-600); }

.stat-card__content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    border: none;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--ease);
    white-space: nowrap;
}

.btn--primary {
    background: linear-gradient(135deg, var(--blue-600), var(--blue-700));
    color: white;
    box-shadow: 0 2px 8px color-mix(in srgb, var(--primary) 30%, transparent);
}

.btn--primary:hover {
    box-shadow: 0 4px 16px color-mix(in srgb, var(--primary) 40%, transparent);
    transform: translateY(-1px);
}

.btn--secondary {
    background: var(--gray-100);
    color: var(--blue-600);
    border: 1px solid var(--gray-200);
}

.btn--secondary:hover {
    background: var(--gray-200);
}

.btn--danger {
    background: var(--red-50);
    color: var(--red-600);
    border: 1px solid var(--red-100);
}

.btn--danger:hover {
    background: var(--red-100);
}

.btn--ghost {
    background: transparent;
    color: var(--gray-600);
    padding: 8px 12px;
}

.btn--ghost:hover {
    background: var(--gray-100);
}

.btn--sm {
    padding: 6px 12px;
    font-size: 0.8rem;
}

.btn--lg {
    padding: 14px 28px;
    font-size: 1rem;
    min-height: 48px;
}

.btn--block {
    width: 100%;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* ============================================================
   FORM ELEMENTS
   ============================================================ */

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-label {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--gray-700);
    display: flex;
    align-items: center;
    gap: 6px;
}

.form-label--required::after {
    content: '*';
    color: var(--danger);
}

.input {
    padding: 10px 14px;
    border-radius: var(--radius-md);
    border: 1px solid var(--line);
    background: var(--card);
    transition: border-color var(--ease), box-shadow var(--ease);
    color: var(--gray-800);
}

.input:focus {
    outline: none;
    border-color: var(--blue-500);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 12%, transparent);
}

.input--error {
    border-color: var(--red-500);
}

textarea.input {
    min-height: 80px;
    resize: vertical;
}

select.input {
    appearance: auto;
}

.form-hint {
    font-size: 0.82rem;
    color: var(--muted);
    line-height: 1.4;
}

.form-error {
    font-size: 0.82rem;
    color: var(--red-600);
    font-weight: 500;
}

/* Password input with visibility toggle */
.password-field {
    position: relative;
}

.password-field .input {
    padding-right: 44px;
    width: 100%;
}

.password-toggle {
    position: absolute;
    top: 50%;
    right: 6px;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--gray-400);
    cursor: pointer;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.password-toggle:hover {
    color: var(--gray-600);
    background: var(--gray-100);
}

/* ============================================================
   MODAL SYSTEM
   ============================================================ */

.modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 999;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-backdrop.open {
    display: flex;
}

.modal-dialog {
    background: var(--card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: min(500px, 92%);
    max-height: 85vh;
    overflow-y: auto;
    padding: 24px;
    position: relative;
}

.modal-backdrop--sm .modal-dialog {
    width: min(400px, 100%);
}

.modal-backdrop--lg .modal-dialog {
    width: min(700px, 100%);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gray-800);
}

.modal-close {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: var(--gray-100);
    color: var(--gray-500);
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--ease);
    flex-shrink: 0;
}

.modal-close:hover {
    background: var(--red-100);
    color: var(--red-600);
}

.modal-body {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.modal-footer {
    display: flex;
    gap: 10px;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--gray-100);
}

/* ============================================================
   BADGES / CHIPS
   ============================================================ */

.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    line-height: 1.4;
}

.badge--blue { background: var(--blue-100); color: var(--blue-700); }
.badge--green { background: var(--green-100); color: var(--green-700); }
.badge--orange { background: var(--orange-100); color: var(--orange-700); }
.badge--red { background: var(--red-100); color: var(--red-700); }
.badge--purple { background: var(--purple-100); color: var(--purple-700); }
.badge--gray { background: var(--gray-100); color: var(--gray-600); }

.badge--lg {
    padding: 5px 14px;
    font-size: 0.84rem;
}

/* ============================================================
   ALERTS / NOTIFICATIONS
   ============================================================ */

.alert {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 14px 16px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    line-height: 1.4;
    animation: cardSlideUp 200ms ease both;
}

.alert-icon {
    flex-shrink: 0;
    font-size: 1.1rem;
    line-height: 1.4;
}

.alert-success {
    background: var(--green-50);
    border: 1px solid var(--green-100);
    color: var(--green-700);
}

.alert-warning {
    background: var(--orange-50);
    border: 1px solid var(--orange-100);
    color: var(--orange-700);
}

.alert-error {
    background: var(--red-50);
    border: 1px solid var(--red-100);
    color: var(--red-700);
}

.alert-info {
    background: var(--blue-50);
    border: 1px solid var(--blue-100);
    color: var(--blue-700);
}

.alert-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

/* ============================================================
   TOGGLE SWITCH
   ============================================================ */

.toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    gap: 10px;
}

.toggle input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle__track {
    width: 44px;
    height: 24px;
    background: var(--gray-300);
    border-radius: 999px;
    position: relative;
    transition: background var(--ease);
}

.toggle__track::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    box-shadow: var(--shadow-sm);
    transition: transform var(--ease);
}

.toggle input:checked + .toggle__track {
    background: var(--primary);
}

.toggle input:checked + .toggle__track::after {
    transform: translateX(20px);
}

.toggle__label {
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--gray-700);
}

/* ============================================================
   TABLES
   ============================================================ */

.table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--radius-md);
    border: 1px solid var(--line);
}

.table-card {
    background: var(--card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.table-card__head {
    padding: 18px 22px;
    border-bottom: 1px solid var(--line);
}

.table-card__head h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--gray-800);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead {
    background: var(--gray-50);
}

.data-table th {
    padding: 12px 16px;
    text-align: left;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--line);
}

.data-table td {
    padding: 12px 16px;
    font-size: 0.9rem;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-100);
    vertical-align: middle;
}

.data-table tbody tr {
    transition: background var(--ease);
}

.data-table tbody tr:hover {
    background: var(--gray-50);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

/* ============================================================
   EMPTY STATE
   ============================================================ */

.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--muted);
}

.empty-state__icon {
    font-size: 3rem;
    margin-bottom: 12px;
    opacity: 0.5;
    display: block;
}

.empty-state__title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.empty-state__desc {
    font-size: 0.9rem;
    margin-bottom: 20px;
}

/* ============================================================
   CALENDAR GRID
   ============================================================ */

.calendar-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 10px;
    min-width: 700px;
    padding: 20px;
    background: var(--card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
}

.calendar-weekday {
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--muted);
    padding: 8px 6px;
}

.calendar-day {
    min-height: 100px;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 8px 10px;
    background: var(--card);
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: background var(--ease), border-color var(--ease);
}

.calendar-day:hover {
    background: color-mix(in srgb, var(--primary) 4%, var(--card));
}

.calendar-day--today {
    border-color: var(--blue-500);
    border-width: 2px;
}

.calendar-day--weekend {
    background: var(--weekend);
}

.calendar-day--holiday {
    background: var(--holiday);
    border-color: var(--red-400);
}

.calendar-day--vacation {
    background: var(--vacation);
    border-color: var(--green-500);
}

.calendar-day--out {
    opacity: 0.45;
}

.calendar-day--empty {
    background: var(--gray-100);
    border-style: dashed;
}

.calendar-day__number {
    font-size: 1rem;
    font-weight: 700;
    color: var(--gray-800);
    line-height: 1;
}

.calendar-day--weekend .calendar-day__number,
.calendar-day--holiday .calendar-day__number {
    color: var(--red-600);
}

.calendar-day__items {
    display: flex;
    flex-direction: column;
    gap: 2px;
    overflow-y: auto;
    flex: 1;
}

.calendar-day__item {
    font-size: 0.72rem;
    padding: 2px 6px;
    border-radius: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ============================================================
   LEGEND / CHIPS BAR
   ============================================================ */

.legend {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.legend__chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 500;
    background: var(--gray-100);
    color: var(--gray-600);
}

.legend__dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* ============================================================
   SECTION HEADERS
   ============================================================ */

.section-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
}

.section-head__title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gray-800);
}

.section-head__desc {
    font-size: 0.88rem;
    color: var(--muted);
}

/* ============================================================
   GRID LAYOUTS
   ============================================================ */

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.grid-responsive-2 {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
}

.grid-responsive-3 {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

/* ============================================================
   SAVE INDICATOR
   ============================================================ */

@keyframes savingPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.saving-indicator {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--muted);
    animation: savingPulse 1.5s ease-in-out infinite;
}

.saving-indicator--saved {
    animation: none;
    color: var(--success);
}

.saving-indicator__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--warning);
}

.saving-indicator--saved .saving-indicator__dot {
    background: var(--success);
    animation: none;
}

/* ============================================================
   SPINNER
   ============================================================ */

@keyframes spin {
    to { transform: rotate(360deg); }
}

.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid color-mix(in srgb, var(--gray-400) 30%, transparent);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

.spinner--sm { width: 12px; height: 12px; border-width: 1.5px; }
.spinner--lg { width: 24px; height: 24px; border-width: 3px; }

/* ============================================================
   SKELETON LOADING
   ============================================================ */

.skeleton {
    background: linear-gradient(90deg, var(--gray-100) 25%, var(--gray-50) 50%, var(--gray-100) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ============================================================
   UTILITY CLASSES
   ============================================================ */

.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;
}

.hidden {
    display: none !important;
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }

.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.mb-8 { margin-bottom: 32px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }

.text-sm { font-size: 0.88rem; }
.text-xs { font-size: 0.8rem; }
.text-center { text-align: center; }
.text-muted { color: var(--muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* ============================================================
   BUTTON ALIASES (Tailwind class compatibility)
   ============================================================ */

.btn-primary {
    background: linear-gradient(135deg, var(--blue-600), var(--blue-700));
    color: white;
    border-radius: var(--radius-md);
    padding: 10px 20px;
    font-weight: 600;
    transition: all var(--ease);
    box-shadow: 0 2px 8px color-mix(in srgb, var(--primary) 30%, transparent);
    border: none;
    text-decoration: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.btn-primary:hover {
    box-shadow: 0 4px 16px color-mix(in srgb, var(--primary) 40%, transparent);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--blue-600);
    border-radius: var(--radius-md);
    padding: 10px 20px;
    font-weight: 600;
    transition: all var(--ease);
    border: 1px solid var(--gray-200);
    text-decoration: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.btn-secondary:hover {
    background: var(--gray-200);
}

/* Flex & grid utilities */
.flex-1 { flex: 1; }
.flex-wrap { flex-wrap: wrap; }
.gap-6 { gap: 24px; }
.space-y-3 > * + * { margin-top: 12px; }

/* Grid utilities */
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }

@media (min-width: 768px) {
    .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
    .lg\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* Stat card gradient backgrounds */
.stat-card.gradient-blue {
    background: linear-gradient(135deg, var(--blue-100), var(--blue-50));
    border-color: color-mix(in srgb, var(--blue-500) 15%, var(--line));
}
.stat-card.gradient-green {
    background: linear-gradient(135deg, var(--green-100), var(--green-50));
    border-color: color-mix(in srgb, var(--green-500) 15%, var(--line));
}
.stat-card.gradient-orange {
    background: linear-gradient(135deg, var(--orange-100), var(--orange-50));
    border-color: color-mix(in srgb, var(--orange-500) 15%, var(--line));
}
.stat-card.gradient-purple {
    background: linear-gradient(135deg, var(--purple-100), var(--purple-50));
    border-color: color-mix(in srgb, var(--purple-500) 15%, var(--line));
}
.stat-card.gradient-pink {
    background: linear-gradient(135deg, var(--pink-100), var(--pink-50));
    border-color: color-mix(in srgb, var(--pink-500) 15%, var(--line));
}

/* Additional margin utilities */
.mt-1 { margin-top: 4px; }

/* Additional typography utilities */
.text-lg { font-size: 1.1rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.85rem; }
.text-4xl { font-size: 2.25rem; }
.font-medium { font-weight: 500; }

/* Semantic text colors */
.text-gray-400 { color: var(--gray-400); }
.text-gray-500 { color: var(--gray-500); }
.text-gray-600 { color: var(--gray-600); }
.text-gray-700 { color: var(--gray-700); }
.text-gray-900 { color: var(--gray-900); }

/* Background colors */
.bg-blue-50 { background: var(--blue-50); }
.bg-green-50 { background: var(--green-50); }
.bg-orange-50 { background: var(--orange-50); }
.bg-pink-50 { background: var(--pink-50); }
.bg-purple-50 { background: var(--purple-50); }
.bg-gray-50 { background: var(--gray-50); }

/* Rounded corners */
.rounded-xl { border-radius: var(--radius-lg); }

/* Border utilities */
.border-l-4 { border-left-width: 4px; }
.border-red-500 { border-color: var(--red-500); }
.border-orange-500 { border-color: var(--orange-500); }
.border-blue-500 { border-color: var(--blue-500); }

/* Padding utilities */
.p-3 { padding: 12px; }
.p-4 { padding: 16px; }
.p-6 { padding: 24px; }

/* Width */
.w-full { width: 100%; }

/* ============================================================
   PRINT STYLES
   ============================================================ */

@media print {
    .sidebar,
    .hamburger-toggle,
    .sidebar-overlay,
    .modal-backdrop,
    .btn,
    .table-card__head form {
        display: none !important;
    }

    body, .app-body {
        background: #fff !important;
        color: #000 !important;
    }

    .content-wrapper {
        margin-left: 0 !important;
    }

    .card {
        box-shadow: none !important;
        border: 1px solid #ccc !important;
        break-inside: avoid;
        animation: none !important;
    }

    .calendar-grid {
        min-width: unset !important;
    }

    .calendar-day {
        min-height: auto !important;
    }
}

/* ============================================================
   RESPONSIVE — TABLET
   ============================================================ */

@media (max-width: 1040px) {
    .grid-2,
    .grid-3,
    .grid-responsive-2,
    .grid-responsive-3 {
        grid-template-columns: 1fr;
    }
}

/* ============================================================
   RESPONSIVE — MOBILE
   ============================================================ */

@media (max-width: 768px) {
    /* Show hamburger toggle */
    .hamburger-toggle {
        display: flex;
    }

    /* Hide sidebar off-screen */
    .sidebar {
        transform: translateX(-100%);
        box-shadow: none;
    }

    .sidebar.open {
        transform: translateX(0);
        box-shadow: var(--shadow-lg);
    }

    .sidebar-overlay {
        display: block;
        pointer-events: none;
        opacity: 0;
        transition: opacity 300ms ease;
    }

    .sidebar-overlay.open {
        pointer-events: auto;
        opacity: 1;
    }

    /* Content no sidebar offset */
    .content-wrapper {
        margin-left: 0;
        padding: 20px 16px 36px;
        padding-top: 72px; /* Leave room for hamburger */
    }

    .page-shell {
        width: calc(100% - 20px);
    }

    .page {
        padding: 12px 0 28px;
        gap: 14px;
    }

    .card {
        padding: 16px 18px;
        border-radius: var(--radius-md);
    }

    .stat-grid {
        grid-template-columns: 1fr;
    }

    .stat-card__content {
        flex-direction: column;
        align-items: flex-start;
    }

    .content-header {
        flex-direction: column;
        margin-bottom: 20px;
    }

    .content-header > :last-child {
        align-self: stretch;
        text-align: center;
    }

    /* Responsive table — card mode */
    .table-wrapper {
        border-radius: var(--radius-sm);
    }

    .data-table thead {
        display: none;
    }

    .data-table,
    .data-table tbody,
    .data-table tr,
    .data-table td {
        display: block;
    }

    .data-table tbody tr {
        padding: 12px 0;
        border-bottom: 1px solid var(--line);
    }

    .data-table tbody tr:last-child {
        border-bottom: none;
    }

    .data-table td {
        padding: 6px 16px;
        text-align: right;
    }

    .data-table td::before {
        content: attr(data-label);
        float: left;
        font-weight: 600;
        font-size: 0.8rem;
        color: var(--gray-500);
        text-transform: uppercase;
        letter-spacing: 0.03em;
    }

    .data-table td:first-child {
        text-align: left;
    }

    .data-table td:first-child::before {
        display: none;
    }

    .calendar-grid {
        min-width: unset;
        padding: 12px;
        gap: 6px;
    }

    .calendar-day {
        min-height: 80px;
    }

    .calendar-day__items {
        display: none;
    }

    /* Modal goes full screen */
    .modal-backdrop {
        padding: 0;
        align-items: flex-end;
    }

    .modal-dialog {
        width: 100%;
        max-height: 90vh;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        bottom: 0;
    }

    /* Form grid becomes single column */
    .form-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================================
   VERY SMALL SCREENS
   ============================================================ */

@media (max-width: 420px) {
    .content-header__title {
        font-size: 1.35rem;
    }

    .content-wrapper {
        padding: 16px 12px 28px;
        padding-top: 72px;
    }

    .btn--lg {
        padding: 12px 20px;
    }
}

/* ============================================================
   ANIMATIONS
   ============================================================ */

.animate-fade-in {
    animation: fadeIn 300ms ease both;
}

.animate-fade-in:nth-child(1) { animation-delay: 0ms; }
.animate-fade-in:nth-child(2) { animation-delay: 60ms; }
.animate-fade-in:nth-child(3) { animation-delay: 120ms; }
.animate-fade-in:nth-child(4) { animation-delay: 180ms; }
.animate-fade-in:nth-child(5) { animation-delay: 240ms; }
.animate-fade-in:nth-child(6) { animation-delay: 300ms; }