:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --card-hover: #26354a;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --border: #334155;
    --danger: #ef4444;
    --holiday-bg: rgba(239, 68, 68, 0.08);
    --holiday-border: rgba(239, 68, 68, 0.3);
}

[data-theme="light"] {
    --bg-color: #f1f5f9;
    --card-bg: #ffffff;
    --card-hover: #e2e8f0;
    --text-color: #0f172a;
    --text-muted: #64748b;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --border: #cbd5e1;
    --danger: #dc2626;
    --holiday-bg: rgba(239, 68, 68, 0.05);
    --holiday-border: rgba(239, 68, 68, 0.2);
}

* { 
    box-sizing: border-box; 
    margin: 0; 
    padding: 0; 
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
    -webkit-tap-highlight-color: transparent; 
}

body { 
    background-color: var(--bg-color); 
    color: var(--text-color); 
    min-height: 100vh; 
    display: flex; 
    justify-content: center; 
    align-items: flex-start; 
    padding: 8px; 
    transition: background 0.3s, color 0.3s; 
}

.container { 
    width: 100%; 
    max-width: 980px; 
    background: var(--card-bg); 
    border-radius: 12px; 
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2); 
    padding: 12px; 
    border: 1px solid var(--border); 
    transition: background 0.3s, border 0.3s; 
}

/* Верхняя панель */
.top-bar { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    margin-bottom: 12px; 
    font-size: 13px; 
    color: var(--text-muted); 
    flex-wrap: wrap; 
    gap: 6px; 
}

.top-controls { 
    display: flex; 
    gap: 6px; 
    align-items: center; 
}

.btn-small { 
    background: var(--bg-color); 
    border: 1px solid var(--border); 
    color: var(--text-color); 
    padding: 4px 8px; 
    border-radius: 6px; 
    cursor: pointer; 
    font-size: 12px; 
}

/* Вход */
#login-screen { 
    text-align: center; 
    max-width: 360px; 
    margin: 30px auto; 
    padding: 10px; 
}

#login-screen h2 { 
    margin-bottom: 15px; 
    font-size: 20px; 
}

.input-group { 
    margin-bottom: 12px; 
    text-align: left; 
}

.input-group label { 
    display: block; 
    margin-bottom: 4px; 
    color: var(--text-muted); 
    font-size: 13px; 
}

input, select { 
    width: 100%; 
    padding: 10px 12px; 
    background: var(--bg-color); 
    border: 1px solid var(--border); 
    border-radius: 8px; 
    color: var(--text-color); 
    font-size: 15px; 
}

input:focus, select:focus { 
    outline: none; 
    border-color: var(--accent); 
}

button { 
    background: var(--accent); 
    color: white; 
    border: none; 
    padding: 10px 16px; 
    border-radius: 8px; 
    font-size: 15px; 
    cursor: pointer; 
    width: 100%; 
    transition: background 0.2s; 
    font-weight: 600; 
}

button:hover { 
    background: var(--accent-hover); 
}

.error-msg { 
    color: var(--danger); 
    font-size: 13px; 
    margin-top: 8px; 
}

/* Приложение */
#app-screen { 
    display: none; 
}

.header { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    margin-bottom: 12px; 
    border-bottom: 1px solid var(--border); 
    padding-bottom: 10px; 
}

.header h2 { 
    font-size: 18px; 
}

.logout-btn { 
    background: transparent; 
    border: 1px solid var(--border); 
    color: var(--text-muted); 
    width: auto; 
    padding: 4px 10px; 
    font-size: 13px; 
    border-radius: 6px; 
}

/* Статистика */
.stats-grid { 
    display: grid; 
    grid-template-columns: repeat(4, 1fr); 
    gap: 6px; 
    margin-bottom: 12px; 
}

.stat-card { 
    background: var(--bg-color); 
    padding: 8px 4px; 
    border-radius: 8px; 
    border: 1px solid var(--border); 
    text-align: center; 
}

.stat-card h3 { 
    font-size: 10px; 
    color: var(--text-muted); 
    margin-bottom: 2px; 
    text-transform: uppercase; 
}

.stat-card p { 
    font-size: 14px; 
    font-weight: bold; 
    color: var(--accent); 
}

/* Навигация календарь */
.calendar-nav { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    margin-bottom: 10px; 
    gap: 4px; 
}

.nav-selectors { 
    display: flex; 
    gap: 4px; 
    flex: 1; 
}

.nav-selectors select { 
    padding: 6px 4px; 
    font-size: 13px; 
    border-radius: 6px; 
    text-align: center; 
}

.calendar-nav button { 
    width: auto; 
    padding: 6px 8px; 
    background: var(--bg-color); 
    border: 1px solid var(--border); 
    color: var(--text-color); 
    font-size: 12px; 
    border-radius: 6px; 
}

/* Сетка календаря */
.weekdays { 
    display: grid; 
    grid-template-columns: repeat(7, 1fr); 
    gap: 4px; 
    text-align: center; 
    font-weight: 600; 
    color: var(--text-muted); 
    font-size: 11px; 
    margin-bottom: 4px; 
}

.days-grid { 
    display: grid; 
    grid-template-columns: repeat(7, 1fr); 
    gap: 4px; 
}

.day-cell { 
    background: var(--bg-color); 
    border: 1px solid var(--border); 
    border-radius: 6px; 
    min-height: 72px; 
    padding: 3px; 
    cursor: pointer; 
    transition: all 0.2s; 
    display: flex; 
    flex-direction: column; 
    justify-content: space-between; 
    position: relative; 
}

.day-cell:active { 
    background: var(--card-hover); 
}

.day-cell.other-month { 
    opacity: 0.25; 
}

.day-cell.is-holiday { 
    background: var(--holiday-bg); 
    border-color: var(--holiday-border); 
}

.day-number { 
    font-size: 11px; 
    font-weight: 600; 
    color: var(--text-muted); 
}

.day-cell.is-holiday .day-number { 
    color: #f87171; 
}

.holiday-label { 
    font-size: 7px; 
    color: #f87171; 
    line-height: 1; 
    margin-top: 1px; 
    font-weight: 500; 
    text-align: center; 
    overflow: hidden; 
    max-height: 18px; 
}

/* Бейджи смен */
.shift-badge { 
    font-size: 9px; 
    padding: 1px 2px; 
    border-radius: 4px; 
    font-weight: bold; 
    text-align: center; 
    margin-top: 1px; 
}

.badge-1 { 
    background: rgba(59, 130, 246, 0.2); 
    color: #60a5fa; 
    border: 1px solid rgba(59, 130, 246, 0.4); 
}

.badge-2 { 
    background: rgba(249, 115, 22, 0.2); 
    color: #fb923c; 
    border: 1px solid rgba(249, 115, 22, 0.4); 
}

.badge-3 { 
    background: rgba(139, 92, 246, 0.2); 
    color: #a78bfa; 
    border: 1px solid rgba(139, 92, 246, 0.4); 
}

.shift-times { 
    font-size: 8px; 
    color: var(--text-muted); 
    text-align: center; 
    margin-top: 1px; 
}

.shift-extra { 
    font-size: 8px; 
    color: #fbbf24; 
    text-align: center; 
}

/* Кнопка сохранения внизу */
.save-footer { 
    margin-top: 12px; 
    display: flex; 
    justify-content: stretch; 
}

#save-data-btn { 
    width: 100%; 
    padding: 10px; 
    font-size: 13px; 
    border-radius: 8px; 
    transition: background 0.3s; 
}

.btn-unsaved { 
    background: var(--danger) !important; 
    color: white; 
}

.btn-saved { 
    background: #10b981 !important; 
    color: white; 
}

/* Модальное окно */
.modal-overlay { 
    position: fixed; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%; 
    background: rgba(0, 0, 0, 0.7); 
    display: none; 
    justify-content: center; 
    align-items: center; 
    z-index: 1000; 
    padding: 10px; 
}

.modal { 
    background: var(--card-bg); 
    border: 1px solid var(--border); 
    border-radius: 12px; 
    width: 100%; 
    max-width: 380px; 
    padding: 16px; 
    box-shadow: 0 10px 25px rgba(0,0,0,0.5); 
    position: relative; 
}

.modal-header { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    margin-bottom: 14px; 
}

.modal-header h3 { 
    font-size: 16px; 
}

.close-btn { 
    background: none; 
    border: none; 
    color: var(--text-muted); 
    font-size: 22px; 
    cursor: pointer; 
    width: auto; 
    padding: 0; 
}

.preset-grid { 
    display: grid; 
    grid-template-columns: repeat(2, 1fr); 
    gap: 6px; 
    margin-bottom: 14px; 
}

.preset-btn { 
    background: var(--bg-color); 
    border: 1px solid var(--border); 
    color: var(--text-color); 
    padding: 10px 6px; 
    border-radius: 6px; 
    cursor: pointer; 
    font-weight: 600; 
    font-size: 12px; 
    text-align: center; 
}

.time-row { 
    display: grid; 
    grid-template-columns: 1fr 1fr; 
    gap: 8px; 
    margin-bottom: 14px; 
}

.calc-summary { 
    background: var(--bg-color); 
    border: 1px solid var(--border); 
    padding: 10px; 
    border-radius: 6px; 
    text-align: center; 
    font-size: 12px; 
    color: var(--text-muted); 
    margin-bottom: 14px; 
}

.calc-summary span { 
    color: var(--text-color); 
    font-weight: bold; 
}

.modal-actions { 
    display: flex; 
    gap: 8px; 
}

.btn-danger-soft { 
    background: rgba(239, 68, 68, 0.1); 
    color: var(--danger); 
    border: 1px solid rgba(239, 68, 68, 0.3); 
}

/* Медиазапросы для планшетов и ПК */
@media (min-width: 600px) {
    body { padding: 15px; }
    .container { padding: 20px; }
    .day-cell { min-height: 95px; padding: 6px; }
    .day-number { font-size: 12px; }
    .holiday-label { font-size: 9px; max-height: 22px; }
    .shift-badge { font-size: 10px; }
    .shift-times, .shift-extra { font-size: 9px; }
    .stats-grid { gap: 10px; }
    .stat-card { padding: 10px; }
    .stat-card h3 { font-size: 11px; }
    .stat-card p { font-size: 16px; }
}