/* ========================================
   ROOT ПЕРЕМЕННЫЕ (Цветовая схема)
   ======================================== */
:root, [data-theme="light"] {
    --bg-primary: #f5f7fb;
    --bg-card: #ffffff;
    --bg-card-secondary: #f8fafc;
    --bg-header: #f1f5f9;
    --bg-tab: #f1f5f9;
    --bg-tab-active: #ffffff;
    --bg-selected: #e0e7ff;
    --bg-calendar: #ffffff;
    --bg-calendar-active: #2a5298;
    --bg-calendar-hover: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-link: #2a5298;
    --text-calendar-active: #ffffff;
    --border: #e2e8f0;
    --border-input: #cbd5e1;
    --shadow: rgba(0,0,0,0.1);
    --lesson-bg: #ffffff;
    --lesson-empty-bg: #f8fafc;
    --lesson-border: #cbd5e1;
    --week-btn-bg: #f1f5f9;
    --week-btn-hover: #e2e8f0;
}

[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-card: #1e293b;
    --bg-card-secondary: #334155;
    --bg-header: #334155;
    --bg-tab: #334155;
    --bg-tab-active: #1e293b;
    --bg-selected: #1e3a8a;
    --bg-calendar: #1e293b;
    --bg-calendar-active: #2a5298;
    --bg-calendar-hover: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-link: #60a5fa;
    --text-calendar-active: #ffffff;
    --border: #334155;
    --border-input: #475569;
    --shadow: rgba(0,0,0,0.3);
    --lesson-bg: #334155;
    --lesson-empty-bg: #1e293b;
    --lesson-border: #475569;
    --week-btn-bg: #334155;
    --week-btn-hover: #475569;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    background: var(--bg-primary);
    padding: 16px;
    padding-bottom: 40px;
    transition: background 0.3s, color 0.3s;
    color: var(--text-primary);
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

/* ========================================
   HEADER
   ======================================== */
.header {
    text-align: center;
    margin-bottom: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.header h1 {
    font-size: 24px;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.header p {
    font-size: 14px;
    color: var(--text-secondary);
}

.theme-toggle {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 40px;
    padding: 8px 12px;
    cursor: pointer;
    font-size: 20px;
    transition: all 0.2s;
}

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

/* ========================================
   КАРТОЧКИ
   ======================================== */
.card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 16px;
    margin-bottom: 16px;
    box-shadow: 0 1px 3px var(--shadow);
    transition: background 0.3s;
}

/* ========================================
   КАЛЕНДАРЬ
   ======================================== */
.calendar-week {
    display: flex;
    justify-content: space-between;
    gap: 6px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.calendar-day {
    flex: 1;
    text-align: center;
    padding: 10px 4px;
    border-radius: 12px;
    background: var(--bg-calendar);
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid var(--border);
}

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

.calendar-day .weekday {
    font-size: 12px;
    font-weight: 500;
}

.calendar-day .date {
    font-size: 14px;
    font-weight: 600;
    margin-top: 4px;
}

.week-nav-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.week-info {
    text-align: center;
    flex: 1;
}

.week-number {
    font-weight: 600;
    font-size: 16px;
    color: var(--text-primary);
}

.week-dates {
    font-size: 12px;
    color: var(--text-secondary);
}

.current-week-btn {
    background: var(--week-btn-bg);
    border: none;
    padding: 8px 16px;
    border-radius: 40px;
    font-size: 13px;
    cursor: pointer;
    color: var(--text-primary);
}

.current-week-btn:hover {
    background: var(--week-btn-hover);
}

.calendar-full {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border-radius: 16px;
    padding: 16px;
    box-shadow: 0 4px 12px var(--shadow);
    z-index: 200;
    margin-top: 8px;
    border: 1px solid var(--border);
}

.calendar-full.show {
    display: block;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.calendar-month-year {
    font-weight: 600;
    font-size: 16px;
}

.calendar-nav-btn {
    background: var(--bg-header);
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 32px;
    cursor: pointer;
    font-size: 16px;
    color: var(--text-primary);
}

.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    text-align: center;
    margin-bottom: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

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

.calendar-cell {
    text-align: center;
    padding: 8px 4px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 13px;
    transition: all 0.2s;
}

.calendar-cell:hover {
    background: var(--bg-calendar-hover);
}

.calendar-cell.other-month {
    color: var(--text-muted);
}

.calendar-cell.today {
    border: 1px solid var(--bg-calendar-active);
}

.calendar-toggle {
    background: var(--bg-header);
    border: 1px solid var(--border);
    padding: 8px 12px;
    border-radius: 40px;
    font-size: 13px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-primary);
    width: 100%;
    justify-content: center;
    margin-top: 8px;
}

.calendar-toggle:hover {
    background: var(--week-btn-hover);
}

.calendar-wrapper {
    position: relative;
}

/* ========================================
   ПОИСК
   ======================================== */
.search-group {
    margin-bottom: 12px;
}

.search-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
    display: block;
}

.search-input-wrapper {
    position: relative;
}

.search-input {
    width: 100%;
    padding: 12px 16px;
    font-size: 16px;
    border: 1px solid var(--border-input);
    border-radius: 12px;
    outline: none;
    transition: all 0.2s;
    background: var(--bg-card);
    color: var(--text-primary);
}

.search-input:focus {
    border-color: var(--text-link);
    box-shadow: 0 0 0 3px rgba(42, 82, 152, 0.1);
}

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

.suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-top: 4px;
    max-height: 250px;
    overflow-y: auto;
    z-index: 100;
    box-shadow: 0 4px 6px var(--shadow);
    display: none;
}

.suggestions.show {
    display: block;
}

.suggestion-item {
    padding: 10px 16px;
    cursor: pointer;
    transition: background 0.2s;
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
}

.suggestion-item:hover {
    background: var(--bg-header);
}

.search-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    background: var(--bg-tab);
    padding: 4px;
    border-radius: 12px;
}

.search-tab {
    flex: 1;
    text-align: center;
    padding: 8px 12px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    background: transparent;
    border: none;
    color: var(--text-secondary);
}

.search-tab.active {
    background: var(--bg-tab-active);
    color: var(--text-link);
    box-shadow: 0 1px 3px var(--shadow);
}

.selected-info {
    background: var(--bg-selected);
    border-radius: 12px;
    padding: 12px 16px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}

.selected-info .label {
    font-size: 13px;
    color: var(--text-secondary);
}

.selected-info .value {
    font-weight: 600;
    font-size: 16px;
    color: var(--text-link);
}

.clear-btn {
    background: transparent;
    border: none;
    color: var(--text-link);
    font-size: 14px;
    cursor: pointer;
    padding: 4px 8px;
}

/* ========================================
   РАСПИСАНИЕ
   ======================================== */
.day-section {
    margin-bottom: 20px;
    scroll-margin-top: 20px;
}

.day-header {
    background: var(--bg-header);
    border-radius: 12px;
    padding: 12px 16px;
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.day-name {
    font-weight: 600;
    font-size: 16px;
    color: var(--text-primary);
}

.day-date {
    font-size: 13px;
    color: var(--text-secondary);
}

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

.pair-item {
    background: var(--lesson-bg);
    border-radius: 12px;
    padding: 12px 16px;
    border-left: 4px solid var(--lesson-border);
    box-shadow: 0 1px 2px var(--shadow);
    transition: background 0.3s;
}

.pair-item.empty {
    background: var(--lesson-empty-bg);
    border-left-color: var(--border);
}

.pair-time {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.pair-time strong {
    color: var(--text-primary);
}

.lesson-info {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.lesson-name {
    font-weight: 600;
    font-size: 15px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.lesson-details {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: var(--text-secondary);
}

.lesson-details span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.lesson-type {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 500;
}

.stream-badge {
    display: inline-block;
    background: #fef3c7;
    color: #92400e;
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 500;
    margin-left: 8px;
}

[data-theme="dark"] .stream-badge {
    background: #451a03;
    color: #fcd34d;
}

.empty-message {
    text-align: center;
    padding: 30px;
    color: var(--text-muted);
    font-size: 14px;
}

.period-selector {
    margin-bottom: 16px;
}

.period-select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-input);
    border-radius: 12px;
    font-size: 14px;
    background: var(--bg-card);
    color: var(--text-primary);
}

.lesson-name-muted {
    color: var(--text-muted);
}

/* ========================================
   АДАПТИВНОСТЬ
   ======================================== */
@media (max-width: 550px) {
    body {
        padding: 12px;
    }
    
    .calendar-day .weekday {
        font-size: 10px;
    }
    
    .calendar-day .date {
        font-size: 11px;
    }
    
    .lesson-details {
        flex-direction: column;
        gap: 6px;
    }
    
    .header {
        flex-direction: column;
        text-align: center;
    }
}