/* ============================================
   LEARNOVA - Dashboard Styles
   ============================================ */

.dashboard-layout { display: flex; min-height: 100vh; background: var(--gray-50); }

.dashboard-sidebar {
    width: 260px; background: white; border-right: 1px solid var(--gray-200);
    display: flex; flex-direction: column; position: fixed; top: 0; left: 0; bottom: 0;
    z-index: 100; transition: var(--transition);
}
.sidebar-header { padding: 4px 12px; min-height: 145px; border-bottom: 1px solid var(--gray-100); display: flex; align-items: center; justify-content: center; gap: 12px; }
.sidebar-header a { width: 100%; display: flex; justify-content: center; }
.sidebar-header img { width: 100%; max-width: 230px; height: auto; object-fit: contain; }
.sidebar-header h2 { font-size: 20px; color: var(--navy); }
.sidebar-nav { flex: 1; padding: 16px 12px; overflow-y: auto; }
.sidebar-section { margin-bottom: 8px; }
.sidebar-section-title { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--gray-400); padding: 12px 16px 8px; }
.sidebar-link {
    display: flex; align-items: center; gap: 12px; padding: 12px 16px;
    border-radius: var(--radius-sm); color: var(--gray-600); font-size: 14px; font-weight: 500;
    transition: var(--transition); margin-bottom: 4px; position: relative;
}
.sidebar-link i { width: 20px; text-align: center; font-size: 16px; }
.sidebar-link:hover { background: var(--gray-100); color: var(--navy); }
.sidebar-link.active {
    background: linear-gradient(135deg, rgba(139,47,201,0.1), rgba(14,165,233,0.1));
    color: var(--purple); font-weight: 600;
}
.sidebar-link.active::before {
    content: ''; position: absolute; left: 0; top: 8px; bottom: 8px; width: 3px;
    background: linear-gradient(180deg, var(--purple), var(--blue)); border-radius: 0 4px 4px 0;
}
.sidebar-link .badge-count { margin-left: auto; background: var(--rose); color: white; font-size: 11px; padding: 2px 8px; border-radius: 100px; font-weight: 700; }
.sidebar-footer { padding: 16px; border-top: 1px solid var(--gray-100); }
.sidebar-user { display: flex; align-items: center; gap: 12px; padding: 12px; border-radius: var(--radius); background: var(--gray-50); }
.sidebar-user-avatar { width: 40px; height: 40px; border-radius: 50%; background: linear-gradient(135deg, var(--purple), var(--blue)); display: flex; align-items: center; justify-content: center; color: white; font-weight: 700; font-size: 14px; }
.sidebar-user-name { font-weight: 600; font-size: 14px; color: var(--navy); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar-user-role { font-size: 12px; color: var(--gray-400); }

.dashboard-main { flex: 1; margin-left: 260px; display: flex; flex-direction: column; min-height: 100vh; }

.dashboard-header { height: 72px; background: white; border-bottom: 1px solid var(--gray-200); display: flex; align-items: center; justify-content: space-between; padding: 0 32px; position: sticky; top: 0; z-index: 50; }
.header-search { position: relative; width: 360px; }
.header-search input { width: 100%; padding: 10px 16px 10px 44px; border: 1px solid var(--gray-200); border-radius: var(--radius); font-size: 14px; background: var(--gray-50); transition: var(--transition); outline: none; }
.header-search input:focus { border-color: var(--blue); background: white; box-shadow: 0 0 0 3px rgba(14,165,233,0.1); }
.header-search i { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); color: var(--gray-400); font-size: 14px; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.header-btn { width: 40px; height: 40px; border-radius: var(--radius); background: var(--gray-50); border: 1px solid var(--gray-200); display: flex; align-items: center; justify-content: center; color: var(--gray-600); font-size: 16px; transition: var(--transition); position: relative; }
.header-btn:hover { background: var(--gray-100); color: var(--navy); }
.header-btn .notification-dot { position: absolute; top: 6px; right: 6px; width: 8px; height: 8px; background: var(--rose); border-radius: 50%; border: 2px solid white; }
.grade-badge { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; background: linear-gradient(135deg, rgba(139,47,201,0.1), rgba(14,165,233,0.1)); border-radius: var(--radius); font-size: 13px; font-weight: 600; color: var(--purple); }
.grade-badge i { color: var(--blue); }

.dashboard-content { flex: 1; padding: 32px; overflow-y: auto; }
.dashboard-title { font-size: 28px; color: var(--navy); margin-bottom: 4px; }
.dashboard-subtitle { color: var(--gray-500); font-size: 15px; margin-bottom: 32px; }

.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-bottom: 32px; }
.stat-card { background: white; border-radius: var(--radius-lg); padding: 24px; border: 1px solid var(--gray-200); transition: var(--transition); }
.stat-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.stat-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.stat-icon { width: 48px; height: 48px; border-radius: var(--radius); display: flex; align-items: center; justify-content: center; font-size: 20px; }
.stat-icon.blue { background: #dbeafe; color: var(--blue); }
.stat-icon.green { background: #dcfce7; color: var(--green); }
.stat-icon.purple { background: #f3e8ff; color: var(--purple); }
.stat-icon.orange { background: #ffedd5; color: var(--orange); }
.stat-icon.yellow { background: #fef3c7; color: #d97706; }
.stat-icon.rose { background: #ffe4e6; color: var(--rose); }
.stat-trend { display: inline-flex; align-items: center; gap: 4px; padding: 4px 10px; border-radius: 100px; font-size: 12px; font-weight: 600; }
.stat-trend.up { background: #dcfce7; color: #166534; }
.stat-trend.down { background: #ffe4e6; color: #991b1b; }
.stat-value { font-family: var(--font-heading); font-size: 32px; font-weight: 900; color: var(--navy); margin-bottom: 4px; }
.stat-label { font-size: 14px; color: var(--gray-500); }

.dashboard-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 24px; margin-bottom: 32px; }
.dashboard-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 32px; }

.panel { background: white; border-radius: var(--radius-lg); border: 1px solid var(--gray-200); overflow: hidden; }
.panel-header { padding: 24px 24px 0; display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.panel-title { font-size: 18px; color: var(--navy); }
.panel-subtitle { font-size: 13px; color: var(--gray-400); margin-top: 4px; }
.panel-body { padding: 0 24px 24px; }
.panel-link { font-size: 14px; font-weight: 600; color: var(--purple); transition: var(--transition); }
.panel-link:hover { color: var(--blue); }

.chart-container { height: 280px; position: relative; }
.chart-bars { display: flex; align-items: flex-end; justify-content: space-between; height: 220px; gap: 12px; padding: 0 8px; }
.chart-bar-group { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 8px; }
.chart-bar { width: 100%; background: linear-gradient(180deg, var(--blue), var(--purple)); border-radius: 6px 6px 0 0; transition: height 0.8s ease; position: relative; min-height: 4px; }
.chart-bar:hover { opacity: 0.8; }
.chart-bar-label { font-size: 12px; color: var(--gray-400); font-weight: 500; }

.activity-list { display: flex; flex-direction: column; gap: 0; }
.activity-item { display: flex; align-items: center; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--gray-100); transition: var(--transition); }
.activity-item:last-child { border-bottom: none; }
.activity-item:hover { background: var(--gray-50); margin: 0 -24px; padding-left: 24px; padding-right: 24px; border-radius: var(--radius-sm); }
.activity-icon { width: 44px; height: 44px; border-radius: var(--radius); display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }
.activity-icon.green { background: #dcfce7; color: var(--green); }
.activity-icon.blue { background: #dbeafe; color: var(--blue); }
.activity-icon.purple { background: #f3e8ff; color: var(--purple); }
.activity-icon.orange { background: #ffedd5; color: var(--orange); }
.activity-icon.rose { background: #ffe4e6; color: var(--rose); }
.activity-content { flex: 1; min-width: 0; }
.activity-title { font-weight: 600; font-size: 14px; color: var(--navy); margin-bottom: 2px; }
.activity-meta { font-size: 13px; color: var(--gray-400); }
.activity-score { text-align: right; flex-shrink: 0; }
.activity-score-value { font-family: var(--font-heading); font-weight: 700; font-size: 16px; color: var(--navy); }
.activity-score-label { font-size: 12px; color: var(--gray-400); }

.subjects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.subject-card { background: white; border-radius: var(--radius-lg); padding: 24px; border: 2px solid var(--gray-200); transition: var(--transition); cursor: pointer; position: relative; overflow: hidden; }
.subject-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--purple), var(--blue)); transform: scaleX(0); transition: var(--transition); }
.subject-card:hover::before { transform: scaleX(1); }
.subject-card:hover { border-color: var(--purple); box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.subject-icon { width: 56px; height: 56px; border-radius: var(--radius); display: flex; align-items: center; justify-content: center; font-size: 24px; margin-bottom: 16px; }
.subject-card h3 { font-size: 17px; margin-bottom: 8px; }
.subject-card p { font-size: 13px; color: var(--gray-500); margin-bottom: 16px; }
.subject-progress { display: flex; align-items: center; gap: 12px; }
.subject-progress-bar { flex: 1; height: 6px; background: var(--gray-200); border-radius: 100px; overflow: hidden; }
.subject-progress-fill { height: 100%; border-radius: 100px; transition: width 0.6s ease; }
.subject-progress-text { font-size: 12px; font-weight: 600; color: var(--gray-500); white-space: nowrap; }

.xp-card { background: linear-gradient(135deg, var(--navy), var(--purple)); border-radius: var(--radius-lg); padding: 28px; color: white; position: relative; overflow: hidden; }
.xp-card::before { content: ''; position: absolute; top: -50px; right: -50px; width: 150px; height: 150px; background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%); border-radius: 50%; }
.xp-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; position: relative; z-index: 1; }
.xp-level { display: flex; align-items: center; gap: 12px; }
.xp-level-icon { width: 48px; height: 48px; background: rgba(255,255,255,0.2); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; font-size: 20px; }
.xp-level-text { font-family: var(--font-heading); font-size: 24px; font-weight: 900; }
.xp-level-sub { font-size: 13px; opacity: 0.8; }
.xp-progress-bar { width: 100%; height: 10px; background: rgba(255,255,255,0.2); border-radius: 100px; overflow: hidden; margin-bottom: 12px; position: relative; z-index: 1; }
.xp-progress-fill { height: 100%; background: linear-gradient(90deg, var(--yellow), var(--orange)); border-radius: 100px; transition: width 0.6s ease; }
.xp-progress-text { font-size: 13px; opacity: 0.8; position: relative; z-index: 1; }

.rewards-preview { display: flex; gap: 12px; overflow-x: auto; padding: 4px; margin: -4px; }
.reward-item { flex-shrink: 0; width: 80px; height: 80px; background: var(--gray-100); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; font-size: 36px; border: 2px solid transparent; transition: var(--transition); cursor: pointer; }
.reward-item:hover { border-color: var(--yellow); transform: scale(1.1); }
.reward-item.locked { opacity: 0.4; filter: grayscale(1); }

.leaderboard-list { display: flex; flex-direction: column; gap: 8px; }
.leaderboard-item { display: flex; align-items: center; gap: 16px; padding: 12px 16px; border-radius: var(--radius); transition: var(--transition); }
.leaderboard-item:hover { background: var(--gray-50); }
.leaderboard-item.current-user { background: linear-gradient(135deg, rgba(139,47,201,0.1), rgba(14,165,233,0.1)); border: 1px solid rgba(139,47,201,0.2); }
.leaderboard-rank { width: 32px; text-align: center; font-family: var(--font-heading); font-weight: 900; font-size: 16px; color: var(--gray-400); }
.leaderboard-rank.top-3 { color: var(--yellow); }
.leaderboard-avatar { width: 40px; height: 40px; border-radius: 50%; background: linear-gradient(135deg, var(--blue), var(--purple)); display: flex; align-items: center; justify-content: center; color: white; font-weight: 700; font-size: 14px; flex-shrink: 0; }
.leaderboard-info { flex: 1; min-width: 0; }
.leaderboard-name { font-weight: 600; font-size: 14px; color: var(--navy); }
.leaderboard-level { font-size: 12px; color: var(--gray-400); }
.leaderboard-xp { font-family: var(--font-heading); font-weight: 700; font-size: 14px; color: var(--purple); }

.quiz-container { max-width: 800px; margin: 0 auto; }
.quiz-header { background: white; border-radius: var(--radius-lg); padding: 24px; border: 1px solid var(--gray-200); margin-bottom: 24px; }
.quiz-progress { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
.quiz-progress-bar { flex: 1; height: 8px; background: var(--gray-200); border-radius: 100px; overflow: hidden; }
.quiz-progress-fill { height: 100%; background: linear-gradient(90deg, var(--purple), var(--blue)); border-radius: 100px; transition: width 0.4s ease; }
.quiz-progress-text { font-size: 14px; font-weight: 600; color: var(--gray-500); white-space: nowrap; }
.quiz-question { background: white; border-radius: var(--radius-lg); padding: 32px; border: 1px solid var(--gray-200); margin-bottom: 24px; }
.quiz-question-text { font-size: 20px; font-weight: 700; color: var(--navy); margin-bottom: 24px; line-height: 1.5; }
.quiz-options { display: flex; flex-direction: column; gap: 12px; }
.quiz-option { display: flex; align-items: center; gap: 16px; padding: 16px 20px; border: 2px solid var(--gray-200); border-radius: var(--radius); cursor: pointer; transition: var(--transition); background: white; }
.quiz-option:hover { border-color: var(--blue); background: #f0f9ff; }
.quiz-option.selected { border-color: var(--blue); background: #dbeafe; }
.quiz-option.correct { border-color: var(--green); background: #dcfce7; }
.quiz-option.incorrect { border-color: var(--rose); background: #ffe4e6; }
.quiz-option-letter { width: 36px; height: 36px; border-radius: 50%; background: var(--gray-100); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 14px; color: var(--gray-600); flex-shrink: 0; }
.quiz-option.selected .quiz-option-letter { background: var(--blue); color: white; }
.quiz-option.correct .quiz-option-letter { background: var(--green); color: white; }
.quiz-option.incorrect .quiz-option-letter { background: var(--rose); color: white; }
.quiz-option-text { font-size: 15px; color: var(--gray-700); }
.quiz-actions { display: flex; justify-content: flex-end; gap: 12px; }

.quiz-result { background: white; border-radius: var(--radius-lg); padding: 48px; border: 1px solid var(--gray-200); text-align: center; }
.result-emoji { font-size: 80px; margin-bottom: 24px; }
.result-score { font-family: var(--font-heading); font-size: 64px; font-weight: 900; background: linear-gradient(135deg, var(--purple), var(--blue)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 8px; }
.result-message { font-size: 20px; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.result-sub { font-size: 15px; color: var(--gray-500); margin-bottom: 32px; }
.result-xp { display: inline-flex; align-items: center; gap: 8px; padding: 12px 24px; background: linear-gradient(135deg, #fef3c7, #ffedd5); border-radius: var(--radius); font-weight: 700; color: #92400e; margin-bottom: 24px; }

.child-selector { display: flex; gap: 12px; margin-bottom: 24px; }
.child-card { display: flex; align-items: center; gap: 12px; padding: 16px 20px; background: white; border: 2px solid var(--gray-200); border-radius: var(--radius-lg); cursor: pointer; transition: var(--transition); }
.child-card:hover { border-color: var(--blue); }
.child-card.active { border-color: var(--purple); background: linear-gradient(135deg, rgba(139,47,201,0.05), rgba(14,165,233,0.05)); }
.child-avatar { width: 48px; height: 48px; border-radius: 50%; background: linear-gradient(135deg, var(--blue), var(--purple)); display: flex; align-items: center; justify-content: center; color: white; font-weight: 700; font-size: 16px; }
.child-info h4 { font-size: 15px; margin-bottom: 2px; }
.child-info p { font-size: 13px; color: var(--gray-400); }

.chat-widget { position: fixed; bottom: 24px; right: 24px; z-index: 1000; }
.chat-toggle { width: 56px; height: 56px; border-radius: 50%; background: linear-gradient(135deg, var(--purple), var(--blue)); color: white; font-size: 24px; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 20px rgba(139,47,201,0.4); transition: var(--transition); position: relative; }
.chat-toggle:hover { transform: scale(1.1); }
.chat-toggle .chat-badge { position: absolute; top: -4px; right: -4px; width: 20px; height: 20px; background: var(--rose); border-radius: 50%; font-size: 11px; font-weight: 700; display: flex; align-items: center; justify-content: center; border: 2px solid white; }
.chat-window { position: absolute; bottom: 72px; right: 0; width: 360px; height: 480px; background: white; border-radius: var(--radius-lg); box-shadow: var(--shadow-xl); display: flex; flex-direction: column; overflow: hidden; opacity: 0; visibility: hidden; transform: translateY(20px); transition: var(--transition); }
.chat-window.open { opacity: 1; visibility: visible; transform: translateY(0); }
.chat-header { padding: 16px 20px; background: linear-gradient(135deg, var(--navy), var(--purple)); color: white; display: flex; align-items: center; justify-content: space-between; }
.chat-header h4 { color: white; font-size: 15px; }
.chat-status { display: flex; align-items: center; gap: 6px; font-size: 12px; opacity: 0.8; }
.chat-status-dot { width: 8px; height: 8px; background: var(--green-light); border-radius: 50%; animation: pulse 2s infinite; }
.chat-close { background: none; color: white; font-size: 18px; opacity: 0.7; transition: var(--transition); }
.chat-close:hover { opacity: 1; }
.chat-body { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.chat-message { max-width: 80%; padding: 12px 16px; border-radius: var(--radius); font-size: 14px; line-height: 1.5; }
.chat-message.bot { background: var(--gray-100); color: var(--gray-700); align-self: flex-start; border-bottom-left-radius: 4px; }
.chat-message.user { background: linear-gradient(135deg, var(--purple), var(--blue)); color: white; align-self: flex-end; border-bottom-right-radius: 4px; }
.chat-footer { padding: 12px 16px; border-top: 1px solid var(--gray-200); display: flex; gap: 8px; }
.chat-input { flex: 1; padding: 10px 14px; border: 1px solid var(--gray-200); border-radius: var(--radius); font-size: 14px; outline: none; transition: var(--transition); }
.chat-input:focus { border-color: var(--blue); }
.chat-send { width: 40px; height: 40px; border-radius: var(--radius); background: linear-gradient(135deg, var(--purple), var(--blue)); color: white; display: flex; align-items: center; justify-content: center; transition: var(--transition); }
.chat-send:hover { transform: scale(1.05); }

.mobile-nav { display: none; position: fixed; bottom: 0; left: 0; right: 0; background: white; border-top: 1px solid var(--gray-200); padding: 8px 16px; z-index: 100; justify-content: space-around; }
.mobile-nav-item { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 8px 12px; color: var(--gray-400); font-size: 11px; font-weight: 500; transition: var(--transition); }
.mobile-nav-item i { font-size: 20px; }
.mobile-nav-item.active { color: var(--purple); }

@media (max-width: 1024px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .dashboard-grid { grid-template-columns: 1fr; }
    .dashboard-grid-2 { grid-template-columns: 1fr; }
    .subjects-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .dashboard-layout { display: block; min-height: 100dvh; }
    .dashboard-sidebar { width: min(84vw, 300px); transform: translateX(-100%); box-shadow: var(--shadow-xl); }
    .dashboard-sidebar.open { transform: translateX(0); }
    .dashboard-main { margin-left: 0; }
    .dashboard-header { height: auto; min-height: 64px; padding: 10px 14px; gap: 12px; }
    .header-search { display: none; }
    .header-actions { gap: 8px; }
    .grade-badge { padding: 8px 11px; font-size: 12px; }
    .header-btn { width: 38px; height: 38px; border-radius: 14px; }
    .dashboard-content { padding: 18px 14px; padding-bottom: calc(92px + env(safe-area-inset-bottom, 0px)); }
    .dashboard-title { font-size: 26px; }
    .dashboard-subtitle { margin-bottom: 22px; }
    .stats-grid { grid-template-columns: 1fr; }
    .subjects-grid { grid-template-columns: 1fr; }
    .panel-header { padding: 18px 18px 0; align-items: flex-start; gap: 12px; }
    .panel-body { padding: 0 18px 18px; }
    .mobile-nav {
        display: flex;
        gap: 2px;
        padding: 8px 8px calc(8px + env(safe-area-inset-bottom, 0px));
        box-shadow: 0 -10px 30px rgba(10,31,77,0.08);
    }
    .mobile-nav-item {
        flex: 1;
        min-width: 0;
        padding: 8px 4px;
        border-radius: 14px;
        text-align: center;
    }
    .mobile-nav-item.active {
        background: rgba(139,47,201,0.10);
    }
    .mobile-nav-item span {
        max-width: 100%;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    .chat-widget { right: 14px; bottom: calc(82px + env(safe-area-inset-bottom, 0px)); }
    .chat-window { width: min(calc(100vw - 28px), 360px); height: min(70vh, 480px); }
    .child-selector { overflow-x: auto; flex-wrap: nowrap; }
}

@media (max-width: 520px) {
    .dashboard-content { padding-left: 12px; padding-right: 12px; }
    .stat-card,
    .subject-card,
    .panel,
    .quiz-header,
    .quiz-question,
    .quiz-result {
        border-radius: 18px;
    }
    .stat-card,
    .subject-card,
    .quiz-header,
    .quiz-question {
        padding: 20px;
    }
    .quiz-actions { flex-direction: column; }
    .quiz-actions .btn { width: 100%; }
    .activity-item,
    .leaderboard-item {
        align-items: flex-start;
        gap: 12px;
    }
    .activity-score {
        text-align: left;
    }
}