/* ============================================
   HACKER ACADEMY — DASHBOARD STYLESHEET
   Premium Cyberpunk Student Dashboard System
   Founded & Owned by Er. Priyanshu Sharma
   File: css/dashboard.css
   Version: 1.0.0
   
   COMPONENTS:
   - Dashboard Layout (Sidebar + Main)
   - Sidebar Navigation
   - Top Header Bar
   - Dashboard Grid System
   - Stat Cards
   - Today's Class Widget
   - Course Progress Cards
   - Assignments & Quizzes
   - Certificates Display
   - Announcements Feed
   - Notifications Panel
   - Leaderboard Table
   - AI Tutor Chat (Full)
   - Profile Section
   - Activity Timeline
============================================ */

/* ============================================
   1. DASHBOARD LAYOUT
============================================ */
.dashboard-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
    background: var(--cyber-dark);
    position: relative;
}

.dashboard-layout::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(at 10% 20%, rgba(0, 255, 157, 0.08) 0%, transparent 40%),
        radial-gradient(at 90% 80%, rgba(0, 212, 255, 0.06) 0%, transparent 40%),
        radial-gradient(at 50% 50%, rgba(181, 55, 242, 0.04) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
}

.dashboard-main {
    position: relative;
    z-index: 1;
    padding: 0;
    overflow-x: hidden;
}

.dashboard-content {
    padding: 30px;
    min-height: calc(100vh - 80px);
}

/* ============================================
   2. SIDEBAR NAVIGATION
============================================ */
.dash-sidebar {
    background: rgba(5, 5, 10, 0.95);
    backdrop-filter: blur(30px) saturate(180%);
    -webkit-backdrop-filter: blur(30px) saturate(180%);
    border-right: 1px solid var(--glass-border);
    padding: 24px 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.dash-sidebar::-webkit-scrollbar { width: 4px; }
.dash-sidebar::-webkit-scrollbar-track { background: transparent; }
.dash-sidebar::-webkit-scrollbar-thumb {
    background: rgba(0, 255, 157, 0.2);
    border-radius: 4px;
}

.sidebar-header {
    padding: 0 24px 24px;
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: 20px;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.sidebar-logo-icon {
    width: 44px;
    height: 44px;
    background: var(--cyber-black);
    border: 2px solid var(--neon-green);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neon-green);
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 900;
    box-shadow: 0 0 20px rgba(0, 255, 157, 0.3);
    position: relative;
    overflow: hidden;
}

.sidebar-logo-icon::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 40%, rgba(0, 255, 157, 0.2));
}

.sidebar-logo-text {
    display: flex;
    flex-direction: column;
}

.sidebar-logo-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 800;
    letter-spacing: 1.5px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar-logo-sub {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--text-muted);
    letter-spacing: 2px;
    margin-top: 2px;
}

.sidebar-section {
    padding: 0 16px;
    margin-bottom: 20px;
}

.sidebar-section-title {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--text-muted);
    letter-spacing: 3px;
    text-transform: uppercase;
    padding: 0 12px;
    margin-bottom: 10px;
}

.sidebar-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 14px;
    color: var(--text-secondary);
    font-family: var(--font-heading);
    font-size: 0.92rem;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    position: relative;
    text-decoration: none;
    cursor: pointer;
}

.sidebar-link i {
    width: 20px;
    font-size: 1rem;
    color: var(--text-muted);
    transition: all 0.3s ease;
}

.sidebar-link:hover {
    background: rgba(0, 255, 157, 0.05);
    color: var(--text-primary);
}

.sidebar-link:hover i {
    color: var(--neon-green);
}

.sidebar-link.active {
    background: linear-gradient(135deg, rgba(0, 255, 157, 0.15), rgba(0, 212, 255, 0.08));
    color: var(--neon-green);
    border: 1px solid rgba(0, 255, 157, 0.3);
    box-shadow: 0 0 20px rgba(0, 255, 157, 0.1);
}

.sidebar-link.active i {
    color: var(--neon-green);
    filter: drop-shadow(0 0 6px var(--neon-green));
}

.sidebar-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: var(--gradient-primary);
    border-radius: 0 3px 3px 0;
    box-shadow: 0 0 10px var(--neon-green);
}

.sidebar-badge {
    margin-left: auto;
    padding: 2px 8px;
    background: var(--neon-green);
    color: var(--cyber-black);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 700;
    border-radius: 50px;
    letter-spacing: 1px;
}

.sidebar-badge.warning {
    background: var(--neon-yellow);
}

.sidebar-badge.danger {
    background: var(--neon-red);
    color: white;
}

.sidebar-user {
    margin: 20px 16px 0;
    padding: 16px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-user-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--gradient-neon);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cyber-black);
    font-family: var(--font-display);
    font-weight: 700;
    border: 2px solid var(--neon-green);
    flex-shrink: 0;
    overflow: hidden;
}

.sidebar-user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sidebar-user-info {
    flex: 1;
    min-width: 0;
}

.sidebar-user-name {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-id {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--neon-green);
    letter-spacing: 1px;
    margin-top: 2px;
}

/* ============================================
   3. TOP HEADER BAR
============================================ */
.dash-header {
    background: rgba(5, 5, 10, 0.7);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--glass-border);
    padding: 18px 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    position: sticky;
    top: 0;
    z-index: 90;
}

.dash-header-left {
    display: flex;
    align-items: center;
    gap: 20px;
    flex: 1;
}

.sidebar-toggle {
    display: none;
    width: 40px;
    height: 40px;
    background: rgba(0, 255, 157, 0.08);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--neon-green);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.sidebar-toggle:hover {
    background: rgba(0, 255, 157, 0.15);
    border-color: var(--neon-green);
}

.dash-search {
    flex: 1;
    max-width: 500px;
    position: relative;
}

.dash-search-input {
    width: 100%;
    padding: 12px 18px 12px 46px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.9rem;
    outline: none;
    transition: all 0.3s ease;
}

.dash-search-input:focus {
    border-color: var(--neon-green);
    box-shadow: 0 0 0 3px rgba(0, 255, 157, 0.15);
    background: rgba(0, 0, 0, 0.6);
}

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

.dash-search-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.9rem;
    pointer-events: none;
}

.dash-search-shortcut {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    padding: 3px 8px;
    background: rgba(0, 255, 157, 0.08);
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.dash-header-right {
    display: flex;
    align-items: center;
    gap: 14px;
}

.dash-clock {
    padding: 8px 16px;
    background: rgba(0, 255, 157, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--neon-green);
    letter-spacing: 2px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.dash-clock i {
    font-size: 0.85rem;
}

.dash-header-btn {
    width: 42px;
    height: 42px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all 0.3s ease;
    position: relative;
}

.dash-header-btn:hover {
    color: var(--neon-green);
    border-color: var(--neon-green);
    background: rgba(0, 255, 157, 0.08);
}

.dash-header-btn .notification-dot {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 8px;
    height: 8px;
    background: var(--neon-red);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--neon-red);
    animation: pulse 2s infinite;
}

.dash-user-menu {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 6px 14px 6px 6px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dash-user-menu:hover {
    border-color: var(--neon-green);
    background: rgba(0, 255, 157, 0.05);
}

.dash-user-menu-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--gradient-neon);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cyber-black);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.85rem;
    border: 2px solid var(--neon-green);
    overflow: hidden;
}

.dash-user-menu-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.dash-user-menu-name {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--text-primary);
}

.dash-user-menu-role {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--neon-green);
    letter-spacing: 1.5px;
}

/* ============================================
   4. DASHBOARD GRID SYSTEM
============================================ */
.dash-grid {
    display: grid;
    gap: 24px;
}

.dash-grid-4 { grid-template-columns: repeat(4, 1fr); }
.dash-grid-3 { grid-template-columns: repeat(3, 1fr); }
.dash-grid-2 { grid-template-columns: repeat(2, 1fr); }
.dash-grid-1-2 { grid-template-columns: 1fr 2fr; }
.dash-grid-2-1 { grid-template-columns: 2fr 1fr; }
.dash-grid-3-2 { grid-template-columns: 3fr 2fr; }

/* ============================================
   5. DASHBOARD STAT CARDS
============================================ */
.dash-stat-card {
    padding: 24px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
    transition: all 0.4s var(--transition-smooth);
}

.dash-stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.dash-stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--neon-green);
    box-shadow: 0 15px 40px rgba(0, 255, 157, 0.15);
}

.dash-stat-card:hover::before {
    transform: scaleX(1);
}

.dash-stat-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
}

.dash-stat-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(0, 255, 157, 0.15), rgba(0, 212, 255, 0.1));
    border: 1px solid var(--neon-green);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neon-green);
    font-size: 1.3rem;
    box-shadow: 0 0 15px rgba(0, 255, 157, 0.2);
}

.dash-stat-icon.blue {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(181, 55, 242, 0.1));
    border-color: var(--neon-blue);
    color: var(--neon-blue);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.2);
}

.dash-stat-icon.purple {
    background: linear-gradient(135deg, rgba(181, 55, 242, 0.15), rgba(255, 46, 154, 0.1));
    border-color: var(--neon-purple);
    color: var(--neon-purple);
    box-shadow: 0 0 15px rgba(181, 55, 242, 0.2);
}

.dash-stat-icon.yellow {
    background: linear-gradient(135deg, rgba(255, 214, 10, 0.15), rgba(255, 122, 0, 0.1));
    border-color: var(--neon-yellow);
    color: var(--neon-yellow);
    box-shadow: 0 0 15px rgba(255, 214, 10, 0.2);
}

.dash-stat-trend {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: rgba(0, 255, 157, 0.1);
    border: 1px solid rgba(0, 255, 157, 0.2);
    border-radius: 50px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--neon-green);
    letter-spacing: 1px;
}

.dash-stat-trend.down {
    background: rgba(255, 56, 96, 0.1);
    border-color: rgba(255, 56, 96, 0.2);
    color: var(--neon-red);
}

.dash-stat-value {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    margin-bottom: 6px;
}

.dash-stat-label {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.dash-stat-footer {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--glass-border);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ============================================
   6. TODAY'S CLASS WIDGET
============================================ */
.today-class-card {
    padding: 28px;
    background: linear-gradient(135deg, rgba(0, 255, 157, 0.08), rgba(0, 212, 255, 0.05));
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border-strong);
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
}

.today-class-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 255, 157, 0.15), transparent 70%);
    pointer-events: none;
}

.today-class-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
    position: relative;
    z-index: 2;
}

.today-class-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: var(--neon-green);
    color: var(--cyber-black);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 2px;
    border-radius: 50px;
    text-transform: uppercase;
    box-shadow: 0 0 20px rgba(0, 255, 157, 0.4);
}

.today-class-tag .pulse-dot {
    width: 6px;
    height: 6px;
    background: var(--cyber-black);
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}

.today-class-time {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--neon-green);
    letter-spacing: 1.5px;
}

.today-class-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 10px;
    position: relative;
    z-index: 2;
}

.today-class-course {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    color: var(--neon-blue);
    margin-bottom: 20px;
    position: relative;
    z-index: 2;
}

.today-class-meta {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-bottom: 24px;
    position: relative;
    z-index: 2;
}

.today-class-meta-item {
    padding: 14px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
}

.today-class-meta-label {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.today-class-meta-value {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.today-class-actions {
    display: flex;
    gap: 12px;
    position: relative;
    z-index: 2;
}

.btn-start-class {
    flex: 1;
    padding: 14px 24px;
    background: var(--gradient-primary);
    color: var(--cyber-black);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 4px 20px rgba(0, 255, 157, 0.4);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-start-class:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 255, 157, 0.6);
}

.btn-start-class::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.btn-start-class:hover::after {
    transform: translateX(100%);
}

/* ============================================
   7. COURSE PROGRESS CARDS
============================================ */
.course-progress-card {
    padding: 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    display: flex;
    gap: 16px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.course-progress-card:hover {
    border-color: var(--neon-green);
    transform: translateX(4px);
    box-shadow: 0 10px 30px rgba(0, 255, 157, 0.1);
}

.course-progress-thumb {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    overflow: hidden;
    flex-shrink: 0;
    position: relative;
    border: 1px solid var(--glass-border);
}

.course-progress-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.85);
}

.course-progress-thumb::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 50%, rgba(0, 255, 157, 0.2));
}

.course-progress-info {
    flex: 1;
    min-width: 0;
}

.course-progress-category {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--neon-green);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.course-progress-title {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.course-progress-bar {
    margin-bottom: 8px;
}

.course-progress-stats {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.course-progress-percent {
    color: var(--neon-green);
    font-weight: 600;
}

/* ============================================
   8. ASSIGNMENTS & QUIZZES LISTS
============================================ */
.dash-list-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.dash-list-header {
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--glass-border);
}

.dash-list-title {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.dash-list-title i {
    color: var(--neon-green);
}

.dash-list-view-all {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--neon-green);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.dash-list-view-all:hover {
    gap: 10px;
}

.dash-list-body {
    padding: 8px;
    max-height: 500px;
    overflow-y: auto;
}

.dash-list-body::-webkit-scrollbar { width: 4px; }
.dash-list-body::-webkit-scrollbar-thumb {
    background: rgba(0, 255, 157, 0.2);
    border-radius: 4px;
}

.dash-list-item {
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 14px;
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid transparent;
}

.dash-list-item:hover {
    background: rgba(0, 255, 157, 0.04);
    border-color: var(--glass-border);
}

.dash-list-item-icon {
    width: 42px;
    height: 42px;
    background: rgba(0, 255, 157, 0.1);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neon-green);
    font-size: 1rem;
    flex-shrink: 0;
}

.dash-list-item-icon.blue {
    background: rgba(0, 212, 255, 0.1);
    color: var(--neon-blue);
}

.dash-list-item-icon.purple {
    background: rgba(181, 55, 242, 0.1);
    color: var(--neon-purple);
}

.dash-list-item-icon.yellow {
    background: rgba(255, 214, 10, 0.1);
    color: var(--neon-yellow);
}

.dash-list-item-icon.red {
    background: rgba(255, 56, 96, 0.1);
    color: var(--neon-red);
}

.dash-list-item-content {
    flex: 1;
    min-width: 0;
}

.dash-list-item-title {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.dash-list-item-meta {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 1px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.dash-list-item-status {
    padding: 4px 10px;
    border-radius: 50px;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    flex-shrink: 0;
}

.status-pending {
    background: rgba(255, 214, 10, 0.1);
    color: var(--neon-yellow);
    border: 1px solid rgba(255, 214, 10, 0.3);
}

.status-completed {
    background: rgba(0, 255, 157, 0.1);
    color: var(--neon-green);
    border: 1px solid rgba(0, 255, 157, 0.3);
}

.status-overdue {
    background: rgba(255, 56, 96, 0.1);
    color: var(--neon-red);
    border: 1px solid rgba(255, 56, 96, 0.3);
}

.status-active {
    background: rgba(0, 212, 255, 0.1);
    color: var(--neon-blue);
    border: 1px solid rgba(0, 212, 255, 0.3);
}

/* ============================================
   9. CERTIFICATES DISPLAY
============================================ */
.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.certificate-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.4s ease;
    position: relative;
}

.certificate-card:hover {
    transform: translateY(-6px);
    border-color: var(--neon-green);
    box-shadow: 0 15px 40px rgba(0, 255, 157, 0.2);
}

.certificate-preview {
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, rgba(0, 255, 157, 0.1), rgba(0, 212, 255, 0.05));
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--glass-border);
    overflow: hidden;
}

.certificate-preview::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 255, 157, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 157, 0.05) 1px, transparent 1px);
    background-size: 20px 20px;
}

.certificate-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cyber-black);
    font-size: 1.8rem;
    box-shadow: 0 0 30px rgba(0, 255, 157, 0.5);
    z-index: 2;
    position: relative;
}

.certificate-ribbon {
    position: absolute;
    top: 14px;
    right: -30px;
    background: var(--neon-green);
    color: var(--cyber-black);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    padding: 4px 40px;
    transform: rotate(45deg);
    text-transform: uppercase;
    box-shadow: 0 2px 10px rgba(0, 255, 157, 0.4);
}

.certificate-body {
    padding: 18px;
}

.certificate-title {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.certificate-course {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--neon-blue);
    letter-spacing: 1.5px;
    margin-bottom: 12px;
}

.certificate-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 12px;
    border-top: 1px solid var(--glass-border);
}

.certificate-date {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.certificate-btn {
    padding: 6px 14px;
    background: transparent;
    border: 1px solid var(--neon-green);
    color: var(--neon-green);
    border-radius: 50px;
    font-family: var(--font-heading);
    font-size: 0.72rem;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s ease;
}

.certificate-btn:hover {
    background: var(--neon-green);
    color: var(--cyber-black);
    box-shadow: 0 0 15px rgba(0, 255, 157, 0.4);
}

/* ============================================
   10. ANNOUNCEMENTS FEED
============================================ */
.announcement-card {
    padding: 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    margin-bottom: 14px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.announcement-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--gradient-primary);
}

.announcement-card.urgent::before {
    background: linear-gradient(180deg, var(--neon-red), var(--neon-pink));
}

.announcement-card.info::before {
    background: linear-gradient(180deg, var(--neon-blue), var(--neon-purple));
}

.announcement-card:hover {
    border-color: var(--neon-green);
    transform: translateX(4px);
}

.announcement-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
}

.announcement-tag {
    padding: 3px 10px;
    background: rgba(0, 255, 157, 0.1);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--neon-green);
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.announcement-tag.urgent {
    background: rgba(255, 56, 96, 0.1);
    color: var(--neon-red);
    border-color: rgba(255, 56, 96, 0.3);
}

.announcement-tag.info {
    background: rgba(0, 212, 255, 0.1);
    color: var(--neon-blue);
    border-color: rgba(0, 212, 255, 0.3);
}

.announcement-date {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.announcement-title {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.announcement-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
}

.announcement-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 12px;
    border-top: 1px solid var(--glass-border);
}

.announcement-author {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.announcement-author-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--gradient-neon);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cyber-black);
    font-size: 0.7rem;
    font-weight: 700;
}

/* ============================================
   11. NOTIFICATIONS PANEL
============================================ */
.notification-panel {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100vh;
    background: rgba(5, 5, 10, 0.98);
    backdrop-filter: blur(30px);
    border-left: 1px solid var(--glass-border);
    z-index: 1000;
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    box-shadow: -20px 0 60px rgba(0, 0, 0, 0.5);
}

.notification-panel.active {
    right: 0;
}

.notification-panel-header {
    padding: 24px;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.notification-panel-title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.notification-panel-close {
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.notification-panel-close:hover {
    background: var(--neon-red);
    color: white;
    border-color: var(--neon-red);
    transform: rotate(90deg);
}

.notification-panel-body {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

.notification-panel-body::-webkit-scrollbar { width: 4px; }
.notification-panel-body::-webkit-scrollbar-thumb {
    background: rgba(0, 255, 157, 0.2);
    border-radius: 4px;
}

.notification-item {
    padding: 14px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    margin-bottom: 10px;
    display: flex;
    gap: 12px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.notification-item:hover {
    border-color: var(--neon-green);
    background: rgba(0, 255, 157, 0.04);
}

.notification-item.unread {
    border-left: 3px solid var(--neon-green);
}

.notification-item-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(0, 255, 157, 0.1);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neon-green);
    font-size: 0.9rem;
    flex-shrink: 0;
}

.notification-item-content {
    flex: 1;
    min-width: 0;
}

.notification-item-title {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.notification-item-text {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 6px;
}

.notification-item-time {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

/* ============================================
   12. LEADERBOARD TABLE
============================================ */
.leaderboard-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.leaderboard-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.leaderboard-title {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.leaderboard-title i {
    color: var(--neon-yellow);
}

.leaderboard-body {
    padding: 8px;
}

.leaderboard-item {
    padding: 14px 16px;
    display: flex;
    align-items: center;
    gap: 14px;
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

.leaderboard-item:hover {
    background: rgba(0, 255, 157, 0.04);
}

.leaderboard-item.top-1 {
    background: linear-gradient(135deg, rgba(255, 214, 10, 0.08), transparent);
    border: 1px solid rgba(255, 214, 10, 0.2);
}

.leaderboard-item.top-2 {
    background: linear-gradient(135deg, rgba(192, 192, 192, 0.06), transparent);
    border: 1px solid rgba(192, 192, 192, 0.15);
}

.leaderboard-item.top-3 {
    background: linear-gradient(135deg, rgba(205, 127, 50, 0.06), transparent);
    border: 1px solid rgba(205, 127, 50, 0.15);
}

.leaderboard-item.self {
    background: linear-gradient(135deg, rgba(0, 255, 157, 0.08), transparent);
    border: 1px solid rgba(0, 255, 157, 0.3);
}

.leaderboard-rank {
    width: 36px;
    height: 36px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.leaderboard-item.top-1 .leaderboard-rank {
    background: var(--gradient-gold);
    color: var(--cyber-black);
    border: none;
    box-shadow: 0 0 15px rgba(255, 214, 10, 0.4);
}

.leaderboard-item.top-2 .leaderboard-rank {
    background: linear-gradient(135deg, #c0c0c0, #a0a0a0);
    color: var(--cyber-black);
    border: none;
}

.leaderboard-item.top-3 .leaderboard-rank {
    background: linear-gradient(135deg, #cd7f32, #a0522d);
    color: white;
    border: none;
}

.leaderboard-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-neon);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cyber-black);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.85rem;
    border: 2px solid var(--glass-border);
    flex-shrink: 0;
    overflow: hidden;
}

.leaderboard-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.leaderboard-info {
    flex: 1;
    min-width: 0;
}

.leaderboard-name {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.leaderboard-tier {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--neon-blue);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-top: 2px;
}

.leaderboard-score {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--neon-green);
    text-align: right;
}

.leaderboard-score-label {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 1px;
    text-align: right;
    margin-top: 2px;
}

/* ============================================
   13. AI TUTOR CHAT (FULL VERSION)
============================================ */
.ai-tutor-container {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 140px);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.ai-tutor-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    gap: 14px;
    background: rgba(0, 0, 0, 0.2);
}

.ai-tutor-avatar {
    width: 50px;
    height: 50px;
    background: var(--gradient-neon);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: var(--cyber-black);
    box-shadow: 0 0 25px rgba(0, 255, 157, 0.5);
    position: relative;
}

.ai-tutor-avatar::after {
    content: '';
    position: absolute;
    bottom: 2px;
    right: 2px;
    width: 12px;
    height: 12px;
    background: var(--neon-green);
    border: 2px solid var(--cyber-dark);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--neon-green);
}

.ai-tutor-info h3 {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.ai-tutor-info p {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--neon-green);
    letter-spacing: 1.5px;
}

.ai-tutor-actions {
    margin-left: auto;
    display: flex;
    gap: 8px;
}

.ai-tutor-body {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.ai-tutor-body::-webkit-scrollbar { width: 6px; }
.ai-tutor-body::-webkit-scrollbar-thumb {
    background: rgba(0, 255, 157, 0.2);
    border-radius: 6px;
}

.ai-message {
    display: flex;
    gap: 12px;
    max-width: 85%;
    animation: fadeInUp 0.4s ease;
}

.ai-message.user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.ai-message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.ai-message.bot .ai-message-avatar {
    background: var(--gradient-neon);
    color: var(--cyber-black);
    border: 2px solid var(--neon-green);
}

.ai-message.user .ai-message-avatar {
    background: var(--gradient-secondary);
    color: var(--cyber-black);
    border: 2px solid var(--neon-blue);
}

.ai-message-bubble {
    padding: 14px 18px;
    border-radius: var(--radius-lg);
    font-size: 0.92rem;
    line-height: 1.7;
}

.ai-message.bot .ai-message-bubble {
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-top-left-radius: 4px;
    color: var(--text-primary);
}

.ai-message.user .ai-message-bubble {
    background: var(--gradient-primary);
    color: var(--cyber-black);
    font-weight: 500;
    border-top-right-radius: 4px;
}

.ai-message-time {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
    margin-top: 6px;
    letter-spacing: 1px;
}

.ai-message.user .ai-message-time {
    text-align: right;
}

.ai-typing {
    display: flex;
    gap: 4px;
    padding: 14px 18px;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-lg);
    border-top-left-radius: 4px;
    width: fit-content;
}

.ai-typing span {
    width: 8px;
    height: 8px;
    background: var(--neon-blue);
    border-radius: 50%;
    animation: pulse 1.4s ease-in-out infinite;
}

.ai-typing span:nth-child(2) { animation-delay: 0.2s; }
.ai-typing span:nth-child(3) { animation-delay: 0.4s; }

.ai-tutor-footer {
    padding: 18px 24px;
    border-top: 1px solid var(--glass-border);
    background: rgba(0, 0, 0, 0.2);
}

.ai-suggestions {
    display: flex;
    gap: 8px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}

.ai-suggestion {
    padding: 6px 14px;
    background: rgba(0, 255, 157, 0.06);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.ai-suggestion:hover {
    border-color: var(--neon-green);
    color: var(--neon-green);
    background: rgba(0, 255, 157, 0.1);
}

.ai-input-wrap {
    display: flex;
    gap: 10px;
    align-items: center;
    padding: 6px 6px 6px 18px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    transition: all 0.3s ease;
}

.ai-input-wrap:focus-within {
    border-color: var(--neon-green);
    box-shadow: 0 0 0 3px rgba(0, 255, 157, 0.15);
}

.ai-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.92rem;
    outline: none;
    padding: 10px 0;
}

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

.ai-input-btn {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 50%;
    color: var(--cyber-black);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.ai-input-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(0, 255, 157, 0.5);
}

.ai-input-actions {
    display: flex;
    gap: 6px;
}

.ai-input-action {
    width: 36px;
    height: 36px;
    background: transparent;
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.ai-input-action:hover {
    color: var(--neon-green);
    border-color: var(--neon-green);
}

/* ============================================
   14. PROFILE SECTION
============================================ */
.profile-header-card {
    padding: 32px;
    background: linear-gradient(135deg, rgba(0, 255, 157, 0.08), rgba(0, 212, 255, 0.05));
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border-strong);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    gap: 28px;
    position: relative;
    overflow: hidden;
}

.profile-header-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 255, 157, 0.12), transparent 70%);
    pointer-events: none;
}

.profile-avatar-large {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--gradient-neon);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cyber-black);
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 2.5rem;
    border: 4px solid var(--neon-green);
    box-shadow: 0 0 40px rgba(0, 255, 157, 0.4);
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
    z-index: 2;
}

.profile-avatar-large img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-avatar-edit {
    position: absolute;
    bottom: 4px;
    right: 4px;
    width: 32px;
    height: 32px;
    background: var(--neon-green);
    color: var(--cyber-black);
    border: 2px solid var(--cyber-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.profile-avatar-edit:hover {
    transform: scale(1.1);
}

.profile-info {
    flex: 1;
    z-index: 2;
}

.profile-name {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 6px;
}

.profile-id {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--neon-green);
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.profile-meta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.profile-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

.profile-meta-item i {
    color: var(--neon-green);
}

.profile-badges {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.profile-tier-badge {
    padding: 6px 14px;
    background: var(--gradient-gold);
    color: var(--cyber-black);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 2px;
    border-radius: 50px;
    text-transform: uppercase;
    box-shadow: 0 0 15px rgba(255, 214, 10, 0.4);
}

.profile-actions {
    display: flex;
    gap: 10px;
    z-index: 2;
}

/* ============================================
   15. ACTIVITY TIMELINE
============================================ */
.timeline {
    position: relative;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--neon-green), var(--neon-blue), var(--neon-purple));
    box-shadow: 0 0 10px rgba(0, 255, 157, 0.3);
}

.timeline-item {
    position: relative;
    padding-bottom: 24px;
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-dot {
    position: absolute;
    left: -26px;
    top: 4px;
    width: 16px;
    height: 16px;
    background: var(--cyber-dark);
    border: 3px solid var(--neon-green);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--neon-green);
    z-index: 2;
}

.timeline-dot.blue { border-color: var(--neon-blue); box-shadow: 0 0 10px var(--neon-blue); }
.timeline-dot.purple { border-color: var(--neon-purple); box-shadow: 0 0 10px var(--neon-purple); }
.timeline-dot.yellow { border-color: var(--neon-yellow); box-shadow: 0 0 10px var(--neon-yellow); }

.timeline-content {
    padding: 16px 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

.timeline-content:hover {
    border-color: var(--neon-green);
    transform: translateX(4px);
}

.timeline-time {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--neon-green);
    letter-spacing: 1.5px;
    margin-bottom: 6px;
}

.timeline-title {
    font-family: var(--font-heading);
    font-size: 0.98rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.timeline-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============================================
   16. ACHIEVEMENTS GRID
============================================ */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}

.achievement-card {
    padding: 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.achievement-card:hover {
    transform: translateY(-4px);
    border-color: var(--neon-green);
    box-shadow: 0 10px 30px rgba(0, 255, 157, 0.15);
}

.achievement-card.locked {
    opacity: 0.5;
    filter: grayscale(0.7);
}

.achievement-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 14px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cyber-black);
    font-size: 1.5rem;
    box-shadow: 0 0 20px rgba(0, 255, 157, 0.4);
}

.achievement-card.locked .achievement-icon {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    box-shadow: none;
}

.achievement-title {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.achievement-desc {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

/* ============================================
   17. CHARTS / ANALYTICS CONTAINERS
============================================ */
.chart-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.chart-title {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.chart-legend {
    display: flex;
    gap: 16px;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.chart-legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.chart-legend-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.chart-body {
    height: 280px;
    position: relative;
}

/* ============================================
   18. MOBILE RESPONSIVE DASHBOARD
============================================ */
@media (max-width: 1200px) {
    .dash-grid-4 { grid-template-columns: repeat(2, 1fr); }
    .dash-grid-3 { grid-template-columns: repeat(2, 1fr); }
    .dash-grid-3-2,
    .dash-grid-2-1,
    .dash-grid-1-2 { grid-template-columns: 1fr; }
}

@media (max-width: 992px) {
    .dashboard-layout {
        grid-template-columns: 1fr;
    }
    
    .dash-sidebar {
        position: fixed;
        left: 0;
        top: 0;
        width: 280px;
        transform: translateX(-100%);
        z-index: 1000;
        box-shadow: 10px 0 40px rgba(0, 0, 0, 0.5);
    }
    
    .dash-sidebar.active {
        transform: translateX(0);
    }
    
    .sidebar-toggle {
        display: flex;
    }
    
    .sidebar-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.7);
        backdrop-filter: blur(5px);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .sidebar-overlay.active {
        opacity: 1;
        visibility: visible;
    }
    
    .dash-grid-2 { grid-template-columns: 1fr; }
    
    .dash-clock {
        display: none;
    }
    
    .dash-user-menu-name,
    .dash-user-menu-role {
        display: none;
    }
    
    .dash-user-menu {
        padding: 4px;
    }
    
    .profile-header-card {
        flex-direction: column;
        text-align: center;
    }
    
    .profile-meta {
        justify-content: center;
    }
    
    .profile-badges {
        justify-content: center;
    }
    
    .profile-actions {
        width: 100%;
        justify-content: center;
    }
    
    .notification-panel {
        width: 100%;
        right: -100%;
    }
}

@media (max-width: 768px) {
    .dashboard-content {
        padding: 20px 16px;
    }
    
    .dash-header {
        padding: 14px 16px;
    }
    
    .dash-search-shortcut {
        display: none;
    }
    
    .dash-grid-4,
    .dash-grid-3 {
        grid-template-columns: 1fr;
    }
    
    .today-class-meta {
        grid-template-columns: 1fr;
    }
    
    .today-class-actions {
        flex-direction: column;
    }
    
    .ai-tutor-container {
        height: calc(100vh - 120px);
    }
    
    .ai-message {
        max-width: 95%;
    }
    
    .ai-tutor-header {
        padding: 16px;
    }
    
    .ai-tutor-body {
        padding: 16px;
    }
    
    .ai-tutor-footer {
        padding: 14px 16px;
    }
    
    .certificates-grid {
        grid-template-columns: 1fr;
    }
    
    .achievements-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .profile-avatar-large {
        width: 100px;
        height: 100px;
        font-size: 2rem;
    }
    
    .profile-name {
        font-size: 1.4rem;
    }
}

@media (max-width: 480px) {
    .dash-stat-value {
        font-size: 1.7rem;
    }
    
    .dash-stat-icon {
        width: 42px;
        height: 42px;
        font-size: 1.1rem;
    }
    
    .today-class-title {
        font-size: 1.2rem;
    }
    
    .achievements-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    
    .achievement-card {
        padding: 16px 12px;
    }
    
    .achievement-icon {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .leaderboard-item {
        padding: 12px;
        gap: 10px;
    }
    
    .leaderboard-avatar {
        width: 34px;
        height: 34px;
        font-size: 0.75rem;
    }
    
    .leaderboard-name {
        font-size: 0.88rem;
    }
    
    .leaderboard-score {
        font-size: 0.95rem;
    }
}

/* ============================================
   19. DASHBOARD UTILITIES
============================================ */
.dash-section-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.dash-section-title::before {
    content: '';
    width: 4px;
    height: 24px;
    background: var(--gradient-primary);
    border-radius: 2px;
    box-shadow: 0 0 10px var(--neon-green);
}

.dash-empty-state {
    padding: 60px 30px;
    text-align: center;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px dashed var(--glass-border);
    border-radius: var(--radius-lg);
}

.dash-empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: rgba(0, 255, 157, 0.08);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neon-green);
    font-size: 2rem;
}

.dash-empty-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.dash-empty-desc {
    color: var(--text-secondary);
    font-size: 0.92rem;
    margin-bottom: 20px;
}

/* ============================================
   END OF DASHBOARD STYLESHEET
============================================ */