/* =========================================
   БАЗОВЫЕ НАСТРОЙКИ И ПЕРЕМЕННЫЕ
   ========================================= */
:root {
    --bg-main: #0a0a0a;
    --bg-sidebar: #121212;
    --bg-card: #1c1c1c;
    --bg-hover: #2a2a2a;
    --text-main: #f5f5f5;
    --text-muted: #888888;
    --border-color: #2a2a2a;
    --accent: #a855f7;
    --accent-hover: #9333ea;
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Inter', 'Segoe UI', sans-serif; }
body { background-color: var(--bg-main); color: var(--text-main); overflow: hidden; height: 100vh; background-size: cover; background-attachment: fixed; }
.app-layout { display: flex; height: 100vh; width: 100vw; }

/* САЙДБАР */
.sidebar { width: 260px; background-color: var(--bg-sidebar); border-right: 1px solid var(--border-color); display: flex; flex-direction: column; padding: 20px; overflow-y: auto; flex-shrink: 0; }
.sidebar-students { width: 220px; }
.main-area { flex: 1; padding: 24px 32px; overflow-y: auto; display: flex; flex-direction: column; gap: 24px; }

.logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: bold; margin-bottom: 24px; }
.logo-icon { font-size: 24px; }
.profile-widget { display: flex; align-items: center; gap: 12px; background-color: var(--bg-card); padding: 12px; border-radius: var(--radius-md); margin-bottom: 24px; }
.avatar { width: 40px; height: 40px; border-radius: 50%; background-color: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 20px; }
.profile-info { display: flex; flex-direction: column; }
.profile-name { font-weight: 600; font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 140px; }
.profile-role { font-size: 12px; color: var(--text-muted); }
.sidebar-header-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.sidebar-title { font-size: 12px; text-transform: uppercase; color: var(--text-muted); letter-spacing: 0.5px; }
.sidebar-footer { margin-top: auto; padding-top: 20px; }

/* СПИСКИ */
.class-list, .student-list { list-style: none; display: flex; flex-direction: column; gap: 6px; overflow-y: auto; }
.class-item, .student-item, .mentee-item { display: flex; justify-content: space-between; align-items: center; padding: 10px 14px; border-radius: var(--radius-sm); cursor: pointer; transition: background 0.2s; font-size: 14px; border: 1px solid transparent; }
.class-item:hover, .student-item:hover, .mentee-item:hover { background-color: var(--bg-hover); }
.class-item.active, .student-item.active, .mentee-item.active { background-color: rgba(168, 85, 247, 0.15); border-color: var(--accent); color: var(--accent); font-weight: 500; }

/* ВЕРХНЯЯ ПАНЕЛЬ */
.top-bar { display: flex; justify-content: space-between; align-items: center; }
.top-bar h1 { font-size: 24px; font-weight: 600; }
.subtitle { font-size: 13px; color: var(--text-muted); margin-top: 4px; }
.date-controls { display: flex; align-items: center; gap: 16px; background-color: var(--bg-card); padding: 6px 16px; border-radius: var(--radius-lg); }

/* КАЛЕНДАРЬ */
.calendar-container { background-color: var(--bg-card); border-radius: var(--radius-lg); padding: 20px; }
.calendar-header { display: grid; grid-template-columns: repeat(7, 1fr); text-align: center; font-size: 12px; color: var(--text-muted); margin-bottom: 12px; font-weight: bold; }
.calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 8px; }
.cal-day { background-color: var(--bg-main); padding: 12px 0; text-align: center; border-radius: var(--radius-md); font-size: 14px; cursor: pointer; transition: all 0.2s; border: 1px solid transparent; position: relative; }
.cal-day:hover:not(.empty) { background-color: var(--bg-hover); }
.cal-day.active { background-color: var(--accent); color: white; font-weight: bold; }
.cal-day.empty { background-color: transparent; cursor: default; }

/* DRAG AND DROP */
.cal-day.dragover { border: 2px dashed var(--accent); background-color: rgba(168, 85, 247, 0.1); }

/* СЕТКА ПАНЕЛЕЙ */
.bottom-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; flex: 1; }
.quarter-panel { background-color: var(--bg-card); border-radius: var(--radius-lg); padding: 20px; display: flex; flex-direction: column; }
.panel-accent { background: linear-gradient(145deg, #1c1c1c, #141414); border: 1px solid rgba(168, 85, 247, 0.2); }
.panel-title { font-size: 16px; font-weight: 600; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border-color); }

/* КАРТОЧКИ ЗАДАЧ */
.schedule-tasks { display: flex; flex-direction: column; gap: 8px; overflow-y: auto; }
.lesson-card { display: flex; align-items: center; gap: 16px; background-color: var(--bg-main); padding: 12px 16px; border-radius: var(--radius-md); border-left: 4px solid var(--accent); transition: transform 0.1s; cursor: grab; }
.lesson-card:active { cursor: grabbing; }
.lesson-card:hover { transform: translateX(4px); }
.lesson-time { font-weight: bold; color: var(--text-muted); font-size: 14px; min-width: 45px; }
.lesson-info { flex: 1; display: flex; flex-direction: column; gap: 4px; }
.lesson-subject { font-weight: 500; font-size: 14px; }
.lesson-room { font-size: 12px; color: var(--text-muted); }
.task-actions { display: flex; gap: 6px; }

/* КНОПКИ */
button { cursor: pointer; border: none; font-family: inherit; outline: none; transition: background 0.2s; }
.btn-primary { background-color: var(--accent); color: white; padding: 10px 16px; border-radius: var(--radius-sm); font-weight: 500; font-size: 14px; }
.btn-primary:hover { background-color: var(--accent-hover); }
.btn-secondary { background-color: var(--bg-hover); color: var(--text-main); padding: 8px 14px; border-radius: var(--radius-sm); font-size: 13px; }
.btn-secondary:hover { background-color: var(--border-color); }
.text-danger { color: var(--danger); }
.btn-icon { background: transparent; color: var(--text-muted); font-size: 18px; padding: 4px; border-radius: 50%; }
.btn-icon:hover { color: var(--text-main); background: var(--bg-hover); }
.icon-btn { background: transparent; color: var(--text-muted); font-size: 16px; padding: 4px; }
.icon-btn:hover { color: var(--text-main); }
.action-btn { display: flex; align-items: center; justify-content: center; width: 32px; height: 32px; border-radius: 50%; font-size: 16px; font-weight: bold; background-color: var(--bg-hover); color: var(--text-main); }
.action-btn.btn-done:hover { background-color: var(--success); color: white; }
.action-btn.btn-missed:hover { background-color: var(--danger); color: white; }
.btn-add-task { width: 100%; padding: 10px; background: rgba(168, 85, 247, 0.1); border: 1px dashed var(--accent); color: var(--accent); border-radius: var(--radius-md); margin-top: 10px; text-align: center; font-size: 13px; }
.btn-add-task:hover { background: rgba(168, 85, 247, 0.2); }

.w-100 { width: 100%; } .mt-2 { margin-top: 8px; } .mb-2 { margin-bottom: 8px; }

/* ИНПУТЫ */
.input-group { margin-bottom: 16px; display: flex; flex-direction: column; gap: 6px; }
.input-group label { font-size: 12px; color: var(--text-muted); }
.input-field { background-color: var(--bg-main); border: 1px solid var(--border-color); color: var(--text-main); padding: 10px 14px; border-radius: var(--radius-sm); font-size: 14px; width: 100%; transition: border 0.2s; }
.input-field:focus { border-color: var(--accent); outline: none; }

/* МОДАЛЬНЫЕ ОКНА */
.modal-overlay { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background: rgba(0, 0, 0, 0.7); backdrop-filter: blur(4px); display: flex; align-items: center; justify-content: center; z-index: 1000; }
.modal { background-color: var(--bg-sidebar); border-radius: var(--radius-lg); width: 400px; max-width: 90%; padding: 24px; box-shadow: 0 10px 30px rgba(0,0,0,0.5); border: 1px solid var(--border-color); animation: modalFadeIn 0.2s ease-out; }
.modal-lg { width: 600px; }
@keyframes modalFadeIn { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.modal-header h2 { font-size: 18px; font-weight: 600; }
.close-btn { background: transparent; color: var(--text-muted); font-size: 20px; }
.close-btn:hover { color: var(--danger); }
.modal-footer { display: flex; justify-content: space-between; margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--border-color); }

/* ТАБЫ */
.tabs { display: flex; gap: 8px; margin-bottom: 16px; border-bottom: 1px solid var(--border-color); padding-bottom: 8px; }
.tab-btn { background: transparent; color: var(--text-muted); padding: 6px 12px; font-size: 13px; border-radius: var(--radius-sm); }
.tab-btn:hover { background: var(--bg-hover); color: var(--text-main); }
.tab-btn.active { background: rgba(168, 85, 247, 0.15); color: var(--accent); font-weight: 500; }

/* БЛОКИ ИНФОРМАЦИИ */
.student-info-block { background-color: var(--bg-main); padding: 16px; border-radius: var(--radius-md); margin-bottom: 16px; border: 1px solid var(--border-color); }
.student-info-block h4 { font-size: 12px; text-transform: uppercase; color: var(--text-muted); margin-bottom: 12px; letter-spacing: 0.5px; }
.student-info-row { display: flex; justify-content: space-between; padding: 6px 0; font-size: 13px; border-bottom: 1px solid var(--border-color); }
.student-info-row:last-child { border-bottom: none; }
.quick-grades { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 8px; }
.quick-grades button { background: var(--bg-sidebar); color: var(--text-main); padding: 8px; border-radius: var(--radius-sm); font-weight: bold; border: 1px solid var(--border-color); }
.quick-grades button:hover { background: var(--accent); border-color: var(--accent); color: white; }
.remark-input-row { display: flex; gap: 8px; }
.remark-input-row .input-field { flex: 1; }

/* СПЕЦИАЛЬНЫЕ БЛОКИ */
.alert-banner { background: rgba(239, 68, 68, 0.1); border: 1px solid var(--danger); color: var(--danger); padding: 10px 14px; border-radius: var(--radius-sm); font-size: 13px; margin-bottom: 8px; }
.status-done { opacity: 0.6; }
.status-missed { background: rgba(239, 68, 68, 0.05); border-left-color: var(--danger) !important; }
.task-moved-info { font-size: 11px; color: var(--danger); margin-left: 6px; }
.comment-list { max-height: 250px; overflow-y: auto; display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.comment-item { background: var(--bg-main); padding: 8px 12px; border-radius: var(--radius-sm); font-size: 13px; }
.comment-author { display: block; font-size: 11px; color: var(--accent); margin-bottom: 4px; font-weight: 600; }
.comment-input-row { display: flex; gap: 8px; }
.comment-input-row .input-field { flex: 1; }
.login-body { display: flex; align-items: center; justify-content: center; }
.login-card { background-color: var(--bg-card); width: 360px; padding: 32px; border-radius: var(--radius-lg); border: 1px solid var(--border-color); box-shadow: 0 10px 30px rgba(0,0,0,0.5); }
.login-card h2 { text-align: center; margin-bottom: 24px; font-weight: 500; }
.empty-state { display: flex; align-items: center; justify-content: center; padding: 30px; background: var(--bg-main); border: 1px dashed var(--border-color); border-radius: var(--radius-md); color: var(--text-muted); font-size: 13px; text-align: center; }

/* ЖУРНАЛ */
.gradebook-grid { display: grid; grid-template-columns: 150px repeat(5, 1fr); gap: 1px; background: var(--border-color); border: 1px solid var(--border-color); border-radius: var(--radius-md); overflow: hidden; min-width: 500px; margin-top: 10px; }
.gb-header { background: var(--bg-main); padding: 10px 8px; text-align: center; font-weight: bold; font-size: 12px; color: var(--text-muted); }
.gb-student-name { background: var(--bg-main); padding: 10px 8px; text-align: left; font-size: 13px; font-weight: 500; display: flex; align-items: center; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.gb-cell { background: var(--bg-card); padding: 10px 8px; text-align: center; font-size: 14px; cursor: pointer; transition: background 0.2s; display: flex; align-items: center; justify-content: center; min-height: 40px; }
.gb-cell:hover { background: var(--bg-hover); color: var(--accent); }
.gb-cell:not(:empty) { font-weight: bold; color: var(--accent); }

/* ЧЕКБОКСЫ (ДНИ НЕДЕЛИ) */
.day-checkboxes { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 10px; }
.day-checkboxes label { display: flex; align-items: center; gap: 4px; font-size: 12px; color: var(--text-main); cursor: pointer; background: var(--bg-main); padding: 4px 8px; border-radius: var(--radius-sm); border: 1px solid var(--border-color); }
.day-checkboxes input[type="checkbox"] { accent-color: var(--accent); cursor: pointer; }

.hidden { display: none !important; }

/* === ГЕЙМИФИКАЦИЯ: ЭФФЕКТЫ И ТЕМЫ === */
.avatar-choice { font-size: 32px; text-align: center; cursor: pointer; padding: 10px; background: var(--bg-main); border-radius: var(--radius-md); transition: background 0.2s; }
.avatar-choice:hover { background: var(--bg-hover); }
.gold-frame { border: 3px solid gold !important; box-shadow: 0 0 15px rgba(255, 215, 0, 0.6) !important; }
.status-frozen { opacity: 0.8; background: rgba(0, 188, 212, 0.08); }
.status-frozen .lesson-subject { color: #00bcd4; }

#pet-container { position: fixed; top: 80%; left: 80%; z-index: 9999; animation: fadeIn 0.5s ease-in; }
.pet-emoji { font-size: 100px; cursor: grab; user-select: none; position: relative; animation: float 3s ease-in-out infinite; }
.pet-emoji:active { cursor: grabbing; }
.golden-pet { filter: drop-shadow(0 0 15px gold); }

body.wall-space { background: radial-gradient(circle at center, #1a0033 0%, #000000 100%) !important; }
body.wall-city { background: linear-gradient(to bottom, #001f3f 0%, #000000 100%) !important; }
body.wall-abstract { background: linear-gradient(135deg, #2b0033 0%, #000000 100%) !important; }

body.theme-neon { --bg-main: #0a001a; --bg-sidebar: #14002e; --bg-card: #1f0045; --bg-hover: #2d0066; --accent: #ff00cc; --accent-hover: #ff33dd; --border-color: #4a0080; }
body.theme-matrix { --bg-main: #000000; --bg-sidebar: #050505; --bg-card: #0a0a0a; --bg-hover: #111111; --accent: #00ff00; --accent-hover: #33ff33; --border-color: #003300; --text-main: #00ff00; --text-muted: #008800; }
body.theme-sunset { --bg-main: #1a0b0b; --bg-sidebar: #2b1212; --bg-card: #3d1a1a; --bg-hover: #5c2626; --accent: #ff7e5f; --accent-hover: #feb47b; --border-color: #662222; }

@keyframes float { 0% { transform: translateY(0px) rotate(0deg); } 50% { transform: translateY(-30px) rotate(5deg); } 100% { transform: translateY(0px) rotate(0deg); } }
@keyframes fadeIn { from { opacity: 0; transform: scale(0); } to { opacity: 1; transform: scale(1); } }

/* ШАРЫ */
#balloon-overlay { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; pointer-events: none; z-index: 99999; overflow: hidden; }
.balloon { position: absolute; bottom: -150px; width: 100px; height: 130px; border-radius: 50% 50% 50% 50% / 40% 40% 60% 60%; box-shadow: inset -10px -10px 25px rgba(0,0,0,0.3), 0 10px 20px rgba(0,0,0,0.2); animation: balloonFly 10s ease-in-out forwards, balloonPile 30s linear forwards; }
.balloon-string { position: absolute; bottom: -40px; left: 50%; width: 3px; height: 40px; background: rgba(255,255,255,0.5); transform: translateX(-50%); }
@keyframes balloonFly { 0% { transform: translateY(0) translateX(0) rotate(0deg); } 100% { transform: translateY(-120vh) translateX(30px) rotate(10deg); } }
@keyframes balloonPile { 0% { margin-bottom: 0; } 33% { margin-bottom: 10vh; } 66% { margin-bottom: 10vh; } 100% { margin-bottom: 60vh; opacity: 0; } }

/* МОЛОТОК И ТРЕЩИНЫ */
.demolition-active { cursor: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='32' height='32' viewBox='0 0 32 32'><text y='24' font-size='24'>🔨</text></svg>") 16 16, crosshair !important; }
.demolition-active * { pointer-events: none; }
.demolition-active .sidebar * { pointer-events: auto; }
.crack { position: fixed; width: 80vmin; height: 80vmin; pointer-events: none; z-index: 99998; animation: crackAppear 0.1s ease-out forwards; }
@keyframes crackAppear { from { opacity: 0; transform: translate(-50%, -50%) scale(0.8); } to { opacity: 1; transform: translate(-50%, -50%) scale(1); } }

/* ЭФФЕКТ СТЕКЛА */
body.has-wallpaper .calendar-container, body.has-wallpaper .quarter-panel, body.has-wallpaper .date-controls, body.has-wallpaper .panel-accent { background-color: rgba(28, 28, 28, 0.7) !important; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
body.has-wallpaper .cal-day, body.has-wallpaper .lesson-card, body.has-wallpaper .student-info-block, body.has-wallpaper .empty-state { background-color: rgba(10, 10, 10, 0.6) !important; backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); }
body.has-wallpaper .sidebar { background-color: var(--bg-sidebar) !important; }

/* === ГЛОБАЛЬНЫЙ БАННЕР === */
.global-banner { position: fixed; top: 0; left: 0; width: 100vw; padding: 12px 24px; z-index: 999999; display: flex; justify-content: space-between; align-items: center; font-weight: 600; font-size: 14px; box-shadow: 0 4px 12px rgba(0,0,0,0.3); animation: slideDown 0.3s ease-out; }
.global-banner.info { background-color: #3498db; color: white; }
.global-banner.warning { background-color: #f1c40f; color: #000; }
.global-banner.danger { background-color: #e74c3c; color: white; }
.global-banner.success { background-color: #2ecc71; color: white; }
.global-banner .close-banner { background: transparent; color: inherit; font-size: 20px; cursor: pointer; font-weight: bold; opacity: 0.8; }
.global-banner .close-banner:hover { opacity: 1; }
@keyframes slideDown { from { transform: translateY(-100%); } to { transform: translateY(0); } }

/* === АНАЛИТИКА ДЛЯ ВЛАДЕЛЬЦА === */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 24px; }
.stat-card { background: var(--bg-card); border-radius: var(--radius-lg); padding: 20px; border: 1px solid var(--border-color); display: flex; flex-direction: column; position: relative; overflow: hidden; }
.stat-card::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px; background: var(--accent); }
.stat-card h3 { font-size: 12px; text-transform: uppercase; color: var(--text-muted); margin-bottom: 8px; letter-spacing: 0.5px; }
.stat-card .value { font-size: 36px; font-weight: bold; color: var(--text-main); }
.stat-card .icon-bg { position: absolute; right: -10px; bottom: -10px; font-size: 80px; opacity: 0.05; }

.chart-container { background: var(--bg-card); border-radius: var(--radius-lg); padding: 20px; border: 1px solid var(--border-color); margin-bottom: 24px; }
.chart-row { display: flex; align-items: center; margin-bottom: 12px; }
.chart-label { width: 120px; font-size: 13px; font-weight: 500; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chart-bar-wrapper { flex: 1; background: var(--bg-main); height: 24px; border-radius: 12px; overflow: hidden; position: relative; }
.chart-bar { height: 100%; background: linear-gradient(90deg, var(--accent), #ff00cc); border-radius: 12px; transition: width 1s ease-out; display: flex; align-items: center; padding-left: 10px; font-size: 11px; font-weight: bold; color: white; }
.chart-bar.green { background: linear-gradient(90deg, var(--success), #00ff88); color: black; }
.chart-bar.orange { background: linear-gradient(90deg, var(--warning), #ffcc00); color: black; }