/* === Тема: CSS переменные === */
:root {
    --bg: #ffffff;
    --bg-secondary: #f8f9fa;
    --text: #212529;
    --text-muted: #6c757d;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --border: #dee2e6;
    --card-bg: #ffffff;
    --card-shadow: 0 1px 3px rgba(0,0,0,0.1);
    --input-bg: #ffffff;
    --input-border: #ced4da;
    --danger: #dc3545;
    --danger-hover: #bb2d3b;
    --success: #198754;
    --success-hover: #157347;
    --warning: #ffc107;
    --nav-bg: #ffffff;
    --nav-shadow: 0 2px 4px rgba(0,0,0,0.08);
}

[data-theme="dark"] {
    --bg: #1a1a2e;
    --bg-secondary: #16213e;
    --text: #e0e0e0;
    --text-muted: #a0a0a0;
    --accent: #4dabf7;
    --accent-hover: #339af0;
    --border: #2d3748;
    --card-bg: #16213e;
    --card-shadow: 0 1px 3px rgba(0,0,0,0.3);
    --input-bg: #1a1a2e;
    --input-border: #2d3748;
    --danger: #e85d6c;
    --danger-hover: #d63a4e;
    --success: #51cf66;
    --success-hover: #40c057;
    --warning: #ffd43b;
    --nav-bg: #16213e;
    --nav-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* === Навигация === */
.navbar {
    background: var(--nav-bg);
    box-shadow: var(--nav-shadow);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--accent);
    text-decoration: none;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
    list-style: none;
}

.navbar-nav a {
    color: var(--text);
    font-size: 0.9rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: background 0.2s;
}

.navbar-nav a:hover {
    background: var(--bg-secondary);
    text-decoration: none;
}

.navbar-nav .active {
    color: var(--accent);
    font-weight: 600;
}

/* === Контейнер === */
.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 1.5rem 1rem;
}

/* === Карточки === */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

/* === Формы === */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.375rem;
    color: var(--text);
}

.form-control {
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 1rem;
    border: 1px solid var(--input-border);
    border-radius: 6px;
    background: var(--input-bg);
    color: var(--text);
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* === Кнопки === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    text-decoration: none;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); color: #fff; text-decoration: none; }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); color: #fff; text-decoration: none; }

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: var(--success-hover); color: #fff; text-decoration: none; }

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
}
.btn-outline:hover { background: var(--bg-secondary); text-decoration: none; }

.btn-sm { padding: 0.3rem 0.6rem; font-size: 0.8rem; }
.btn-block { width: 100%; }

/* === Таблицы === */
.table-responsive { overflow-x: auto; }

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

th, td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

/* === Вкладки === */
.tabs {
    display: flex;
    border-bottom: 2px solid var(--border);
    margin-bottom: 1.5rem;
}

.tab {
    padding: 0.75rem 1.25rem;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-muted);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: color 0.2s, border-color 0.2s;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    font-size: 0.95rem;
}

.tab:hover { color: var(--text); }
.tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* === Алерты === */
.alert {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.alert-danger {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger);
    border: 1px solid rgba(220, 53, 69, 0.2);
}

.alert-success {
    background: rgba(25, 135, 84, 0.1);
    color: var(--success);
    border: 1px solid rgba(25, 135, 84, 0.2);
}

.alert-warning {
    background: rgba(255, 193, 7, 0.1);
    color: #856404;
    border: 1px solid rgba(255, 193, 7, 0.2);
}

/* === Бейджи === */
.badge {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 4px;
}

.badge-active { background: rgba(37, 99, 235, 0.1); color: var(--accent); }
.badge-confirmed { background: rgba(25, 135, 84, 0.1); color: var(--success); }
.badge-cancelled { background: rgba(220, 53, 69, 0.1); color: var(--danger); }

/* === Переключатель тем === */
.theme-toggle {
    background: none;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.35rem 0.6rem;
    cursor: pointer;
    font-size: 1rem;
    color: var(--text);
    transition: background 0.2s;
}

.theme-toggle:hover { background: var(--bg-secondary); }

/* === Страница логина === */
.login-container {
    max-width: 420px;
    margin: 3rem auto;
    padding: 0 1rem;
}

.login-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    padding: 2rem;
}

.login-title {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

/* === Статистика (панель админа) === */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* === Утилиты === */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.d-flex { display: flex; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }
.flex-wrap { flex-wrap: wrap; }

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}

/* === Адаптивность === */
@media (max-width: 768px) {
    .navbar { padding: 0.5rem 0.75rem; }
    .navbar-nav { gap: 0.5rem; }
    .navbar-nav a { font-size: 0.8rem; padding: 0.2rem 0.35rem; }
    .container { padding: 1rem 0.75rem; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    table { font-size: 0.85rem; }
    th, td { padding: 0.5rem; }
    .card { padding: 1rem; }
    .page-title { font-size: 1.25rem; }
    .btn { padding: 0.4rem 0.8rem; font-size: 0.85rem; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .tabs { overflow-x: auto; }
    .tab { white-space: nowrap; padding: 0.5rem 0.75rem; font-size: 0.85rem; }
}

/* === flatpickr overrides для тёмной темы === */
[data-theme="dark"] .flatpickr-calendar {
    background: var(--card-bg);
    border-color: var(--border);
    color: var(--text);
}