*{margin:0;padding:0;box-sizing:border-box}
:root{
--primary:#7c3aed;--primary-dark:#5b21b6;--primary-light:#ede9fe;
--success:#059669;--success-light:#d1fae5;
--danger:#dc2626;--danger-light:#fee2e2;
--bg:#f8fafc;--surface:#ffffff;--text:#1e293b;--text-secondary:#64748b;
--border:#e2e8f0;--radius:20px;--radius-sm:12px;
--shadow:0 1px 3px rgba(0,0,0,0.04);--shadow-md:0 4px 12px rgba(0,0,0,0.06);
--shadow-lg:0 12px 24px rgba(0,0,0,0.08);
--sidebar-width:240px;
}
body{font-size:17px;font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh;display:flex;-webkit-font-smoothing:antialiased}

.sidebar{position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-width);background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:1.5rem;z-index:100;overflow-y:auto}
.sidebar-logo{font-size:1.5rem;font-weight:800;text-decoration:none;margin-bottom:1.5rem;display:block}.sidebar-logo span{background:linear-gradient(135deg,#7c3aed,#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.sidebar-nav{display:flex;flex-direction:column;gap:0.25rem;flex:1}
.sidebar-item{font-size:1rem;display:flex;align-items:center;gap:0.85rem;padding:0.8rem 1rem;border-radius:12px;text-decoration:none;color:var(--text-secondary);font-size:0.95rem;font-weight:500;transition:all 0.2s}
.sidebar-item .nav-icon{font-size:1.4rem;width:28px;text-align:center}
.sidebar-item:hover,.sidebar-item.active{color:var(--primary);background:var(--primary-light)}
.sidebar-item.logout{color:var(--danger);margin-top:auto}.sidebar-item.logout:hover{background:var(--danger-light)}

.main-content{margin-left:var(--sidebar-width);flex:1;padding:2rem 3rem;width:auto}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.topbar h1{font-size:1.7rem;font-weight:700}.topbar-user{font-size:0.9rem;color:var(--text-secondary)}

.btn{display:inline-flex;align-items:center;gap:0.5rem;padding:0.6rem 1.25rem;border:none;border-radius:50px;font-size:0.85rem;font-weight:600;cursor:pointer;transition:all 0.25s;text-decoration:none;font-family:inherit}
.btn-primary{background:var(--primary);color:white}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px)}
.btn-outline{background:transparent;border:2px solid var(--border);color:var(--text)}.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn-sm{font-size:14px;padding:0.4rem 0.9rem;font-size:0.75rem}.btn-danger{background:var(--danger);color:white}.btn-success{background:var(--success);color:white}

.form-group{margin-bottom:1rem}.form-group label{display:block;margin-bottom:0.3rem;font-weight:600;font-size:0.85rem}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:0.7rem 0.9rem;border:2px solid var(--border);border-radius:var(--radius-sm);font-size:0.9rem;font-family:inherit;background:var(--bg);transition:all 0.2s}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(124,58,237,0.1);background:white}

.alert{padding:0.8rem 1rem;border-radius:var(--radius-sm);margin-bottom:1rem;font-weight:500}.alert-warning{background:#fef3c7;color:#92400e}.alert-success{background:var(--success-light);color:#065f46}
.progress-bar{height:6px;background:var(--border);border-radius:50px;overflow:hidden;margin:0.5rem 0}.progress-fill{height:100%;background:var(--primary);border-radius:50px}
.empty-state{text-align:center;padding:2rem;color:var(--text-secondary);background:var(--surface);border-radius:var(--radius);border:2px dashed var(--border)}
.modal{display:none;position:fixed;z-index:200;left:0;top:0;width:100%;height:100%;background:rgba(0,0,0,0.5);animation:fadeIn 0.2s}
.modal-content{background:var(--surface);margin:5% auto;padding:1.5rem;border-radius:var(--radius);width:90%;max-width:500px;box-shadow:var(--shadow-lg);animation:slideUp 0.3s}
.close{float:right;font-size:1.3rem;cursor:pointer;color:var(--text-secondary)}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}@keyframes slideUp{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}

/* DASHBOARD */
.dashboard{display:grid;grid-template-columns:2fr 1fr;gap:1.25rem}
.dashboard-card{background:var(--surface);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow);border:1px solid var(--border);margin-bottom:1rem}
.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.card-header h2{font-size:1.1rem;font-weight:700}
.deadlines-list{display:flex;flex-direction:column;gap:0.75rem}
.deadline-item{display:flex;align-items:center;gap:0.75rem;padding:0.75rem;border-radius:12px;background:var(--bg);text-decoration:none;color:inherit}
.deadline-dot{width:10px;height:10px;border-radius:50%;background:var(--primary);flex-shrink:0}
.deadline-info{flex:1}.deadline-info strong{display:block;font-size:0.9rem}.deadline-info span{font-size:0.75rem;color:var(--text-secondary)}
.badge{padding:0.25rem 0.6rem;border-radius:50px;font-size:0.7rem;font-weight:600}.badge-success{background:var(--success-light);color:#065f46}
.subjects-grid-dashboard{display:grid;grid-template-columns:1fr;gap:0.75rem}
.subject-card-dashboard{display:flex;align-items:center;gap:1rem;padding:1rem;background:var(--bg);border-radius:14px;text-decoration:none;color:inherit}
.subject-icon{font-size:2rem}.subject-info-dashboard h3{font-size:0.95rem;font-weight:700}.subject-info-dashboard p{font-size:0.8rem;color:var(--text-secondary)}
.progress-label{font-size:0.75rem;color:var(--primary);font-weight:600}
.quick-actions{display:grid;grid-template-columns:repeat(4,1fr);gap:0.75rem;margin-top:0.5rem}
.action-card{display:flex;flex-direction:column;align-items:center;gap:0.5rem;padding:1.25rem 0.5rem;background:var(--surface);border-radius:var(--radius-sm);border:1px solid var(--border);text-decoration:none;color:var(--text);font-size:0.8rem;font-weight:500}
.action-card:hover{border-color:var(--primary);background:var(--primary-light)}.action-icon{font-size:1.5rem}
.weekly-chart{text-align:center}.chart-circle{width:120px;height:120px;margin:0 auto 1rem;position:relative}.chart-circle svg{width:100%;height:100%}
.chart-value{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:1.4rem;font-weight:800;color:var(--primary)}
.chart-stats{text-align:left;font-size:0.8rem}.chart-stat{display:flex;align-items:center;gap:0.5rem;margin-bottom:0.3rem}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block}.dot.blue{background:var(--primary)}.dot.green{background:var(--success)}.dot.purple{background:#a78bfa}
.mini-calendar{font-size:0.75rem}.calendar-days{display:grid;grid-template-columns:repeat(7,1fr);text-align:center;color:var(--text-secondary);margin-bottom:0.25rem;font-weight:600}
.calendar-dates{display:grid;grid-template-columns:repeat(7,1fr);text-align:center;gap:2px}.calendar-dates span{padding:0.25rem;border-radius:6px}
.calendar-dates .today{background:var(--primary);color:white;font-weight:700}.calendar-dates .other-month{color:#cbd5e1}
.practice-errors-btn{display:flex;align-items:center;gap:0.75rem;padding:1rem 1.25rem;background:linear-gradient(135deg,#fee2e2,#fef3c7);border-radius:var(--radius-sm);text-decoration:none;color:#991b1b;font-weight:600;margin-top:0.5rem}
.practice-errors-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.practice-errors-btn .arrow{margin-left:auto;font-size:1.2rem}


/* Мобильное меню */
.mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 50px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    z-index: 200;
    align-items: center;
    padding: 0 16px;
    justify-content: space-between;
}
.mobile-logo {
    font-weight: 800;
    font-size: 18px;
    background: linear-gradient(135deg, #7c3aed, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hamburger {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: 4px 8px;
    color: var(--text);
}
.mobile-sidebar {
    position: fixed;
    top: 0;
    left: -280px;
    bottom: 0;
    width: 260px;
    background: var(--surface);
    z-index: 300;
    transition: left 0.3s;
    padding: 20px 16px;
    overflow-y: auto;
    box-shadow: 2px 0 20px rgba(0,0,0,0.3);
}
.mobile-sidebar.open { left: 0; }
.overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 250;
}
.overlay.show { display: block; }
.mobile-sidebar .sidebar-item { padding: 12px 14px; font-size: 15px; }
.mobile-sidebar .sidebar-logo { margin-bottom: 16px; }

@media (max-width: 768px) {
    .mobile-header { display: flex; }
    .sidebar { display: none; }
    .main-content { 
        margin-left: 0; 
        padding: 60px 14px 20px; 
    }
    .dashboard { grid-template-columns: 1fr; }
    .quick-actions { grid-template-columns: repeat(2, 1fr); }
}


/* Улучшенные карточки предметов */
.subjects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1rem;
}
.subject-card {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s;
    text-decoration: none;
    color: inherit;
    position: relative;
}
.subject-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}
.subject-delete-btn {
    position: absolute;
    top: 8px;
    right: 12px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--danger-light);
    color: var(--danger);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 700;
    opacity: 0;
    transition: opacity 0.2s;
}
.subject-card:hover .subject-delete-btn { opacity: 1; }
.subject-delete-btn:hover { background: var(--danger); color: white; }
.subject-actions-new { display: flex; gap: 0.5rem; margin-top: 0.75rem; }

/* Тестовые вопросы */
.test-container { max-width: 100%; margin: 0 auto; }
.question-nav-btn {
    min-width: 44px;
    min-height: 44px;
    border-radius: 10px;
    border: 2px solid var(--border);
    background: var(--surface);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}
.question-nav-btn:hover { border-color: var(--primary); background: var(--primary-light); }
.question-nav-btn.current { background: var(--primary); color: white; border-color: var(--primary); }
.question-nav-btn.answered { background: var(--success-light); border-color: var(--success); color: #065f46; }

.option-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    cursor: pointer;
    transition: all 0.25s;
    font-size: 0.95rem;
    text-align: left;
}
.option-btn:hover:not(.disabled) { border-color: var(--primary); background: var(--primary-light); transform: translateX(4px); }
.option-btn.disabled { pointer-events: none; opacity: 0.7; }

/* ДЗ карточки */
.homework-card {
    background: var(--surface);
    border: 2px solid #93c5fd;
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    transition: all 0.3s;
    box-shadow: 0 2px 8px rgba(59,130,246,0.08);
    display: block;
    text-decoration: none;
    color: inherit;
}
.homework-card:hover {
    border-color: #3b82f6;
    box-shadow: 0 4px 16px rgba(59,130,246,0.15);
    transform: translateY(-2px);
}
.homework-card h3 { color: #1e40af; margin-bottom: 0.5rem; }

/* Результаты */
.result-answer-card {
    border-radius: 14px;
    padding: 1.25rem;
    margin-bottom: 0.75rem;
    border-left: 4px solid #93c5fd;
}
.result-answer-card.correct { background: #f0fdf4; border-left-color: #4ade80; }
.result-answer-card.wrong { background: #fff1f2; border-left-color: #f87171; }

/* Конструктор */
.constructor-layout { display: grid; grid-template-columns: 2fr 1fr; gap: 1.25rem; }

/* Статистика */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 0.75rem; }
.stat-card { background: var(--surface); padding: 1.5rem; border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--border); text-align: center; }
.stat-card h4 { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 0.5rem; }
.stat-card p { font-size: 2rem; font-weight: 800; color: var(--primary); }

@media (max-width: 768px) {
    .constructor-layout { grid-template-columns: 1fr; }
    .subjects-grid { grid-template-columns: 1fr; }
}

/* Стили для страницы вопросов в предмете */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.page-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
}
.header-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Карточки вопросов с чекбоксами */
.questions-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.question-card {
    background: var(--surface);
    padding: 1.25rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all 0.2s;
    position: relative;
}
.question-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}
.question-card .q-checkbox {
    transform: scale(1.4);
    cursor: pointer;
    accent-color: var(--primary);
}

/* Стили для ДЗ */
.homework-card {
    background: var(--surface);
    border: 2px solid #e2e8f0;
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 0.75rem;
    transition: all 0.3s;
    display: block;
    text-decoration: none;
    color: inherit;
}
.homework-card:hover {
    border-color: var(--primary);
    box-shadow: 0 4px 16px rgba(124,58,237,0.1);
    transform: translateY(-2px);
}
.homework-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}
.homework-card .meta {
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.badge-status {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-new { background: #dbeafe; color: #1e40af; }
.badge-done { background: #d1fae5; color: #065f46; }

/* Таблица в ДЗ */
.results-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    background: #f8fafc;
    border-radius: 12px;
    overflow: hidden;
}
.results-table th {
    background: #ede9fe;
    padding: 0.75rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--primary-dark);
}
.results-table td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}
.results-table tr:hover td {
    background: #f5f3ff;
}

/* Блоки обратной связи */
.feedback-block {
    background: #eef2ff;
    border: 2px solid #c7d2fe;
    border-radius: 14px;
    padding: 1.25rem;
    margin: 1rem 0;
}
.feedback-block h3 {
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}

/* Кнопка "Пройти тест" */
.btn-primary.btn-lg {
    padding: 0.9rem 2rem;
    font-size: 1rem;
    background: linear-gradient(135deg, var(--primary), #a78bfa);
    color: white;
    border: none;
    border-radius: 50px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(124,58,237,0.3);
    transition: all 0.3s;
}
.btn-primary.btn-lg:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(124,58,237,0.4);
}

/* Улучшенный дизайн вопросов */
.question-card {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: 16px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.04);
    border: 1px solid var(--border);
    transition: all 0.25s;
    position: relative;
    margin-bottom: 0.75rem;
}
.question-card:hover {
    box-shadow: 0 4px 16px rgba(124,58,237,0.08);
    border-color: var(--primary-light);
}
.question-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}
.question-number {
    background: linear-gradient(135deg, var(--primary-light), #ddd6fe);
    color: var(--primary-dark);
    font-weight: 700;
    font-size: 0.8rem;
    padding: 0.3rem 0.8rem;
    border-radius: 50px;
    display: inline-block;
}
.difficulty-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.7rem;
    font-weight: 700;
}
.difficulty-badge.easy { background: #d1fae5; color: #065f46; }
.difficulty-badge.normal { background: #fef3c7; color: #92400e; }
.difficulty-badge.hard { background: #fee2e2; color: #991b1b; }
.question-text {
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.6;
    margin-bottom: 0.75rem;
    color: var(--text);
}
.options-preview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}
.options-preview .option {
    padding: 0.6rem 0.9rem;
    background: var(--bg);
    border-radius: 10px;
    font-size: 0.85rem;
    border: 1px solid transparent;
    transition: all 0.2s;
}
.options-preview .option:hover {
    background: #f5f3ff;
    border-color: var(--primary-light);
}
.options-preview .option.correct {
    background: linear-gradient(135deg, #d1fae5, #a7f3d0);
    border-color: var(--success);
    font-weight: 600;
    color: #065f46;
}
.explanation-preview {
    background: linear-gradient(135deg, #eef2ff, #e0e7ff);
    padding: 0.75rem 1rem;
    border-radius: 10px;
    font-size: 0.85rem;
    color: var(--primary-dark);
    margin-bottom: 0.75rem;
    border-left: 4px solid var(--primary);
    line-height: 1.5;
}
.question-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

/* Чекбокс для выбора вопросов */
.q-checkbox {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary);
    position: absolute;
    top: 15px;
    left: 15px;
    z-index: 5;
}
.question-card.has-checkbox {
    padding-left: 3rem;
}

/* Бейджи */
.badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 50px;
    font-size: 0.7rem;
    font-weight: 600;
}
.badge-success { background: #d1fae5; color: #065f46; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-info { background: #dbeafe; color: #1e40af; }

/* Модальные окна */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(2px);
    animation: fadeIn 0.2s;
}
.modal-content {
    background: var(--surface);
    margin: 5% auto;
    padding: 2rem;
    border-radius: 20px;
    width: 90%;
    max-width: none;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
    animation: slideUp 0.3s;
}
.modal-content h2 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}
.close {
    float: right;
    font-size: 1.5rem;
    font-weight: 700;
    cursor: pointer;
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s;
}
.close:hover {
    background: var(--bg);
    color: var(--text);
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { transform: translateY(30px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* Увеличенные картинки в вариантах ответов */
.drag-item img {
    max-width: 150px !important;
    max-height: 150px !important;
    border-radius: 12px;
    object-fit: contain;
}
.drop-zone img {
    max-width: 120px !important;
    max-height: 120px !important;
    border-radius: 10px;
    object-fit: contain;
}
.drop-zone.on-image img {
    max-width: 100px !important;
    max-height: 100px !important;
}

/* Более заметные окошки */
.drop-zone.on-image {
    min-width: 70px !important;
    min-height: 40px !important;
    font-size: 0.9rem !important;
    background: rgba(255,255,255,0.95) !important;
    border: 3px solid #7c3aed !important;
}

/* Увеличенные варианты */
.drag-item {
    padding: 0.8rem 1.5rem !important;
    font-size: 1rem !important;
}



.subjects-grid-dashboard{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1rem;}

@media (min-width: 1024px) {
    /* Главный контейнер */
    .main-content { 
        padding: 2.5rem 3.5rem; 
        max-width: none !important; 
        width: auto;
    }
    
    /* Дашборд */
    .dashboard { 
        grid-template-columns: minmax(0, 2fr) minmax(320px, 1fr); 
        gap: 28px; 
    }
    .dashboard-main { min-width: 0; }
    
    /* Сетки карточек — авто-заполнение */
    .cases-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
        gap: 20px;
        max-width: none;
    }
    
    /* Формы */
    .generate-card { 
        max-width: 100%; 
        padding: 30px;
    }
    .form-row { 
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }
    
    /* Карточки вопросов/ДЗ */
    .hw-card { max-width: none; }
    .question-card { max-width: none; padding: 20px 24px; }
    .deadline-item { padding: 16px 20px; }
    
    /* Конструктор */
    .constructor-layout {
        grid-template-columns: minmax(0, 2fr) minmax(300px, 1fr);
        gap: 24px;
    }
    
    /* Кейсы */
    .case-container {
        max-width: none;
        grid-template-columns: minmax(300px, 360px) minmax(0, 1fr);
        gap: 24px;
    }
    
    /* Тесты */
    .test-container { max-width: 900px; margin: 0 auto; }
    
    /* Страница предметов */
    .questions-list {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
        gap: 16px;
    }
    
    /* Типография */
    body { font-size: 16px; }
    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.4rem; }
    h3 { font-size: 1.15rem; }
    
    /* Поля форм */
    input, textarea, select { font-size: 15px; padding: 12px 16px; }
    .form-group label { font-size: 15px; font-weight: 600; }
    
    /* Кнопки */
    .btn { padding: 11px 22px; font-size: 15px; }
    .btn-lg { padding: 15px 30px; font-size: 17px; }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .main-content { padding: 2rem; }
    .dashboard { grid-template-columns: 1fr; }
    .cases-grid { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
    .case-container { grid-template-columns: 1fr; }
    .constructor-layout { grid-template-columns: 1fr; }
    .questions-list { grid-template-columns: 1fr; }
}

/* === ТЁМНАЯ ТЕМА === */
[data-theme="dark"] {
    --bg: #0f172a;
    --surface: #1e293b;
    --border: #334155;
    --text: #f1f5f9;
    --text-secondary: #94a3b8;
    --primary: #a78bfa;
    --primary-light: #1e1b4b;
    --primary-dark: #7c3aed;
    --success: #4ade80;
    --success-light: #052e16;
    --danger: #f87171;
    --danger-light: #450a0a;
    --shadow: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.4);
}

[data-theme="dark"] body { background: var(--bg); color: var(--text); }
[data-theme="dark"] .sidebar { background: var(--surface); border-color: var(--border); }
[data-theme="dark"] .main-content { background: var(--bg); }
[data-theme="dark"] .dashboard-card,
[data-theme="dark"] .question-card,
[data-theme="dark"] .hw-card,
[data-theme="dark"] .student-card,
[data-theme="dark"] .case-card,
[data-theme="dark"] .step-card,
[data-theme="dark"] .generate-card,
[data-theme="dark"] .patient-card {
    background: var(--surface);
    border-color: var(--border);
    box-shadow: var(--shadow);
}
[data-theme="dark"] .dashboard-card:hover,
[data-theme="dark"] .question-card:hover {
    box-shadow: var(--shadow-lg);
}
[data-theme="dark"] input,
[data-theme="dark"] textarea,
[data-theme="dark"] select {
    background: var(--surface);
    color: var(--text);
    border-color: var(--border);
}
[data-theme="dark"] .sidebar-item { color: var(--text-secondary); }
[data-theme="dark"] .sidebar-item:hover { background: var(--primary-light); color: var(--primary); }
[data-theme="dark"] .btn-outline { border-color: var(--border); color: var(--text); }
[data-theme="dark"] .btn-outline:hover { background: var(--surface); }
[data-theme="dark"] .chat-body,
[data-theme="dark"] #cw_body { background: var(--bg); }
[data-theme="dark"] .chat-bubble.ai,
[data-theme="dark"] .cw_msg.ai { background: var(--surface); border-color: var(--border); color: var(--text); }
[data-theme="dark"] .chat-footer,
[data-theme="dark"] #cw_foot { background: var(--surface); border-color: var(--border); }
[data-theme="dark"] .chat-window,
[data-theme="dark"] #cw_box { background: var(--surface); }
[data-theme="dark"] .option-btn { background: var(--surface); border-color: var(--border); color: var(--text); }
[data-theme="dark"] .option-btn:hover { background: var(--primary-light); }
[data-theme="dark"] .feedback-block { background: var(--surface); }
[data-theme="dark"] .deadline-item { background: var(--surface); }
[data-theme="dark"] .student-card { border-left-color: var(--primary); }
[data-theme="dark"] h1, [data-theme="dark"] h2, [data-theme="dark"] h3 { color: var(--text); }

/* Кнопка переключения темы */
.theme-toggle {
    position: fixed;
    bottom: 24px;
    left: 24px;
    z-index: 999998;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--surface);
    border: 2px solid var(--border);
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}
.theme-toggle:hover { transform: scale(1.1); }

/* === ГРАДИЕНТЫ === */
.sidebar { background: var(--surface); }
[data-theme="dark"] .sidebar { background: var(--surface); }

/* Все карточки — фиолетовый акцент */
.dashboard-card {
    background: var(--surface);
    border-left: 3px solid #a78bfa;
}
[data-theme="dark"] .dashboard-card {
    background: var(--surface);
    border-left: 3px solid #7c3aed;
}

.hw-card {
    border-left: 3px solid #a78bfa;
}
[data-theme="dark"] .hw-card {
    border-left: 3px solid #7c3aed;
}

.case-card {
    border-left: 3px solid #a78bfa;
}
[data-theme="dark"] .case-card {
    border-left: 3px solid #7c3aed;
}

.student-card {
    border-left: 3px solid #a78bfa;
}
[data-theme="dark"] .student-card {
    border-left: 3px solid #7c3aed;
}

.question-card {
    border-left: 3px solid #a78bfa;
}
[data-theme="dark"] .question-card {
    border-left: 3px solid #7c3aed;
}

/* Градиент только для важных элементов */
.btn-primary {
    background: linear-gradient(135deg, #7c3aed, #a78bfa);
    border: none;
    color: white;
}
.btn-primary:hover {
    background: linear-gradient(135deg, #6d28d9, #8b5fa2);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(124,58,237,0.4);
}

.btn-success {
    background: linear-gradient(135deg, #7c3aed, #a78bfa);
    border: none;
    color: white;
}
.btn-success:hover {
    background: linear-gradient(135deg, #6d28d9, #8b5fa2);
    box-shadow: 0 4px 12px rgba(124,58,237,0.4);
}


/* Градиентные кнопки */
.btn-primary {
    background: linear-gradient(135deg, #7c3aed, #a78bfa);
    border: none;
    color: white;
}
.btn-primary:hover {
    background: linear-gradient(135deg, #6d28d9, #8b5cf6);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(124,58,237,0.4);
}

.btn-success {
    background: linear-gradient(135deg, #059669, #10b981);
    border: none;
    color: white;
}
.btn-success:hover {
    background: linear-gradient(135deg, #047857, #059669);
    box-shadow: 0 4px 12px rgba(16,185,129,0.4);
}

/* Активный пункт меню */
.sidebar-item.active {
    background: var(--primary-light) !important;
    color: var(--primary) !important;
    font-weight: 600;
    border-radius: 12px;
}

/* Иконки в меню — анимация */
.nav-icon {
    transition: transform 0.2s ease;
    display: flex;
    align-items: center;
}
.sidebar-item:hover .nav-icon {
    transform: scale(1.15);
}

/* Карточки — улучшенные тени */
.dashboard-card, .question-card, .hw-card, .student-card, .case-card {
    transition: box-shadow 0.3s ease, transform 0.2s ease;
}
.dashboard-card:hover, .question-card:hover, .hw-card:hover, 
.student-card:hover, .case-card:hover {
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

/* Цветные круги в дашборде */
.action-icon {
    transition: transform 0.2s ease;
}
.action-card:hover .action-icon {
    transform: scale(1.1);
}

/* Точки событий в календаре */
.calendar-dates span {
    position: relative;
}
.calendar-dates span.has-event::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: #7c3aed;
    border-radius: 50%;
    box-shadow: 0 0 6px rgba(124,58,237,0.6);
}

.calendar-dates span.has-event::after {
    display: none;  /* отключаем старые точки */
}

[data-theme="dark"] input,
[data-theme="dark"] textarea,
[data-theme="dark"] select {
    background: #1e293b !important;
    color: #f1f5f9 !important;
    border-color: #334155 !important;
}

[data-theme="dark"] input::placeholder,
[data-theme="dark"] textarea::placeholder {
    color: #64748b !important;
}

[data-theme="dark"] input:focus,
[data-theme="dark"] textarea:focus,
[data-theme="dark"] select:focus {
    border-color: #7c3aed !important;
    outline: none;
}

/* Чат-виджет в тёмной теме */
[data-theme="dark"] #cw_box {
    background: #1e293b;
    border: 1px solid #334155;
}
[data-theme="dark"] #cw_head {
    background: #7c3aed;
}
[data-theme="dark"] #cw_body {
    background: #0f172a;
}
[data-theme="dark"] #cw_input {
    background: #1e293b;
    color: #f1f5f9;
    border-color: #334155;
}
[data-theme="dark"] #cw_foot {
    background: #1e293b;
    border-color: #334155;
}
[data-theme="dark"] .cw_msg.ai {
    background: #1e293b;
    color: #f1f5f9;
    border-color: #334155;
}
[data-theme="dark"] .cw_msg.user {
    background: #7c3aed;
    color: white;
}

/* Формы в тёмной теме */
[data-theme="dark"] .generate-card {
    background: #1e293b;
}
[data-theme="dark"] .form-group label {
    color: #cbd5e1;
}

[data-theme="dark"] {
    --text: #e8e4da !important;
    --text-secondary: #9aaa9e !important;
}
[data-theme="dark"] body { color: #e8e4da !important; }
[data-theme="dark"] h1, [data-theme="dark"] h2, [data-theme="dark"] h3, 
[data-theme="dark"] h4, [data-theme="dark"] h5, [data-theme="dark"] h6,
[data-theme="dark"] p, [data-theme="dark"] li, [data-theme="dark"] label,
[data-theme="dark"] span, [data-theme="dark"] div, [data-theme="dark"] td,
[data-theme="dark"] th, [data-theme="dark"] strong, [data-theme="dark"] a {
    color: #e8e4da;
}
[data-theme="dark"] .text-secondary,
[data-theme="dark"] .subtitle,
[data-theme="dark"] .meta,
[data-theme="dark"] .event-meta,
[data-theme="dark"] .last-seen,
[data-theme="dark"] small {
    color: #9aaa9e !important;
}
[data-theme="dark"] .btn-outline {
    color: #d4af37 !important;
    border-color: #d4af37;
}
[data-theme="dark"] .sidebar-item {
    color: #9aaa9e !important;
}
[data-theme="dark"] .sidebar-item:hover {
    color: #d4af37 !important;
}

[data-theme="dark"] .sidebar-logo span,
[data-theme="dark"] .mobile-logo,
[data-theme="dark"] h1, [data-theme="dark"] h2, [data-theme="dark"] h3 {
    color: #e8e4da !important;
    -webkit-text-fill-color: #e8e4da !important;
}
[data-theme="dark"] .event-title,
[data-theme="dark"] .question-text,
[data-theme="dark"] .step-question,
[data-theme="dark"] .feature-card h3,
[data-theme="dark"] .teacher-card h3,
[data-theme="dark"] .review-author,
[data-theme="dark"] .student-card h3,
[data-theme="dark"] .case-card h3,
[data-theme="dark"] .hw-card h3,
[data-theme="dark"] .deadline-item strong,
[data-theme="dark"] .subject-card-dashboard h3 {
    color: #e8e4da !important;
}
[data-theme="dark"] .stat-num,
[data-theme="dark"] .stat-value {
    color: #d4af37 !important;
}

/* Адаптивность */
@media (max-width: 768px) {
    .main-content { padding: 70px 12px 20px !important; }
    .dashboard { grid-template-columns: 1fr !important; }
    .quick-actions { grid-template-columns: repeat(2, 1fr) !important; }
    .cases-grid { grid-template-columns: 1fr !important; }
    .schedule-layout { grid-template-columns: 1fr !important; }
    .constructor-layout { grid-template-columns: 1fr !important; }
    .case-container { grid-template-columns: 1fr !important; }
    h1 { font-size: 1.5rem !important; }
    h2 { font-size: 1.2rem !important; }
    .btn-lg { padding: 12px 20px; font-size: 14px; }
    .question-card, .hw-card, .student-card { padding: 12px 14px; }
}

[data-theme="dark"] * {
    color-scheme: dark;
}
[data-theme="dark"] body,
[data-theme="dark"] p,
[data-theme="dark"] li,
[data-theme="dark"] td,
[data-theme="dark"] th,
[data-theme="dark"] label,
[data-theme="dark"] span,
[data-theme="dark"] div,
[data-theme="dark"] small,
[data-theme="dark"] strong,
[data-theme="dark"] em {
    color: #e8e4da !important;
}
[data-theme="dark"] h1, [data-theme="dark"] h2, [data-theme="dark"] h3,
[data-theme="dark"] h4, [data-theme="dark"] h5, [data-theme="dark"] h6 {
    color: #f0ece4 !important;
}
[data-theme="dark"] a {
    color: #d4af37 !important;
}
[data-theme="dark"] .text-secondary,
[data-theme="dark"] .subtitle,
[data-theme="dark"] .meta,
[data-theme="dark"] .event-meta,
[data-theme="dark"] .last-seen,
[data-theme="dark"] .stat-label,
[data-theme="dark"] .result-meta {
    color: #9aaa9e !important;
}
[data-theme="dark"] input,
[data-theme="dark"] textarea,
[data-theme="dark"] select {
    background: #1e293b !important;
    color: #f1f5f9 !important;
    border-color: #334155 !important;
}
[data-theme="dark"] .btn-outline {
    color: #d4af37 !important;
    border-color: #d4af37 !important;
}
[data-theme="dark"] .sidebar-item {
    color: #cbd5e1 !important;
}
[data-theme="dark"] .dashboard-card,
[data-theme="dark"] .question-card,
[data-theme="dark"] .hw-card,
[data-theme="dark"] .student-card,
[data-theme="dark"] .case-card,
[data-theme="dark"] .generate-card,
[data-theme="dark"] .patient-card {
    background: #1e293b !important;
    color: #e8e4da !important;
}

[data-theme="dark"] .chat-messages {
    background: #0f172a !important;
}
[data-theme="dark"] .msg.ai {
    background: #1e293b !important;
    color: #e8e4da !important;
    border-color: #334155 !important;
}
[data-theme="dark"] .msg.user {
    background: #7c3aed !important;
    color: white !important;
}
[data-theme="dark"] .chat-form textarea {
    background: #1e293b !important;
    color: #f1f5f9 !important;
    border-color: #334155 !important;
}
[data-theme="dark"] .chat-form textarea::placeholder {
    color: #64748b !important;
}

[data-theme="dark"] .case-card h3,
[data-theme="dark"] .case-card p,
[data-theme="dark"] .case-card .case-difficulty,
[data-theme="dark"] .case-card span,
[data-theme="dark"] .case-card div {
    color: #e8e4da !important;
}
[data-theme="dark"] .case-card .badge-new {
    background: #1e3a5f !important;
    color: #93c5fd !important;
}
[data-theme="dark"] .case-card .badge-completed {
    background: #064e3b !important;
    color: #6ee7b7 !important;
}
[data-theme="dark"] .case-card {
    background: #1e293b !important;
    border-color: #334155 !important;
}
[data-theme="dark"] .case-card:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.5) !important;
}

[data-theme="dark"] .case-difficulty,
[data-theme="dark"] .diff-easy,
[data-theme="dark"] .diff-normal,
[data-theme="dark"] .diff-hard {
    color: #1e293b !important;
    font-weight: 700 !important;
}
[data-theme="dark"] .diff-easy { background: #6ee7b7 !important; }
[data-theme="dark"] .diff-normal { background: #fcd34d !important; }
[data-theme="dark"] .diff-hard { background: #fca5a5 !important; }

[data-theme="dark"] .cases-grid * {
    color: #e8e4da !important;
}
[data-theme="dark"] .case-difficulty {
    color: #1e293b !important;
    -webkit-text-fill-color: #1e293b !important;
}

[data-theme="dark"] .badge-success {
    background: #064e3b !important;
    color: #6ee7b7 !important;
    font-weight: 700 !important;
}
[data-theme="dark"] .hw-card span,
[data-theme="dark"] .hw-card .badge {
    color: #e8e4da !important;
}

[data-theme="dark"] .cal-day.today {
    background: #1e3a5f !important;
    border-color: #60a5fa !important;
}
[data-theme="dark"] .cal-day.today .cal-day-num {
    color: #93c5fd !important;
}
[data-theme="dark"] .cal-event.planned {
    background: #1e3a5f !important;
    color: #93c5fd !important;
}

[data-theme="dark"] .week-day.today {
    background: #1e3a5f !important;
    border-color: #60a5fa !important;
}
[data-theme="dark"] .week-day.today * {
    color: #e8e4da !important;
}
[data-theme="dark"] .week-day {
    background: #1e293b !important;
    color: #e8e4da !important;
}

@media (max-width: 768px) {
    .main-content { 
        margin-left: 0 !important; 
        padding: 60px 6px 10px !important;
        width: 100% !important;
        max-width: 100vw !important;
        overflow-x: hidden !important;
    }
    .sidebar { display: none !important; }
}

[data-theme="dark"] .welcome-bar {
    background: #1e293b !important;
    color: #e8e4da !important;
    border-color: #334155 !important;
}
[data-theme="dark"] .welcome-bar h1,
[data-theme="dark"] .welcome-bar p,
[data-theme="dark"] .welcome-bar div {
    color: #e8e4da !important;
}
[data-theme="dark"] .stat-card {
    background: #1e293b !important;
    border-color: #334155 !important;
}
[data-theme="dark"] .stat-card h3 { color: #9aaa9e !important; }
[data-theme="dark"] .stat-card .big-num { color: #a78bfa !important; }
[data-theme="dark"] .streak-row {
    background: #1e293b !important;
    border-color: #334155 !important;
    color: #e8e4da !important;
}
[data-theme="dark"] .streak-num { color: #a78bfa !important; }
[data-theme="dark"] .quote-card {
    background: #1e293b !important;
    border-color: #334155 !important;
    color: #cbd5e1 !important;
}
[data-theme="dark"] .carousel-card {
    background: #1e293b !important;
    border-color: #334155 !important;
    color: #e8e4da !important;
}
[data-theme="dark"] .carousel-card h4 { color: #e8e4da !important; }
[data-theme="dark"] .carousel-card p { color: #9aaa9e !important; }
[data-theme="dark"] .carousel-nav {
    background: #1e293b !important;
    border-color: #334155 !important;
    color: #e8e4da !important;
}
[data-theme="dark"] .subject-bar-row {
    background: #1e293b !important;
    border-color: #334155 !important;
}
[data-theme="dark"] .subject-bg { background: #334155 !important; }

/* Safari fixes */
input, textarea, select, button {
    -webkit-appearance: none;
    border-radius: 8px;
}
@supports (-webkit-touch-callout: none) {
    input, textarea, select {
        font-size: 16px !important; /* Не дает Safari зумить */
    }
}

@media (max-width: 768px) {
    .desktop-profile { display: none !important; }
}

.option-btn.selected {
    position: relative;
    border-color: #7c3aed !important;
    background: var(--primary-light) !important;
}
.option-btn.selected::after {
    content: '';
    position: absolute;
    top: 10px;
    right: 10px;
    width: 12px;
    height: 12px;
    background: #7c3aed;
    border-radius: 50%;
}

/* === ПАСТЕЛЬНЫЕ ПЛАШКИ === */
.answer-correct, .badge-success { background: #D1FAE5 !important; color: #065F46 !important; }
.answer-wrong, .badge-danger { background: #FEE2E2 !important; color: #991B1B !important; }

/* === HOVER-ЭФФЕКТЫ === */
.dashboard-card, .question-card, .hw-card, .student-card, .case-card, .file-card {
    transition: all 0.2s ease;
}
.dashboard-card:hover, .question-card:hover, .hw-card:hover, 
.student-card:hover, .case-card:hover, .file-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

/* === ЭФФЕКТ НАЖАТИЯ === */
.btn, .option-btn, .sidebar-item, .download-btn {
    transition: all 0.2s ease;
}
.btn:active, .option-btn:active, .sidebar-item:active, .download-btn:active {
    transform: scale(0.98);
}

/* === АНИМАЦИЯ ПЕРЕХОДА ВОПРОСОВ === */
.question-block {
    animation: slideIn 0.2s ease;
}
@keyframes slideIn {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

/* === LOADING SPINNER === */
.loading-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 3px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* === GAP В ФОРМАХ === */
.form-group { margin-bottom: 16px; }
.explanation-preview { font-size: 14px; padding: 12px 16px; }

/* Сворачивание сайдбара */
.sidebar.collapsed {
    width: 56px !important;
    padding: 0.5rem !important;
}
.sidebar.collapsed .sidebar-nav {
    width: 100% !important;
}
.sidebar.collapsed .sidebar-logo {
    text-align: center;
    margin-bottom: 0.5rem;
}
.sidebar.collapsed .sidebar-logo span {
    display: none;
}
.sidebar.collapsed .nav-group-title {
    display: none;
}
.sidebar.collapsed .sidebar-item {
    justify-content: center !important;
    padding: 0.6rem 0 !important;
    gap: 0 !important;
    font-size: 0 !important;
}
.sidebar.collapsed .sidebar-item span:not(.nav-icon) {
    display: none !important;
}
.sidebar.collapsed .sidebar-item .nav-icon {
    width: 100% !important;
    text-align: center !important;
    font-size: 1.4rem !important;
}