/* 
 * Montefarmaco Academy - E-Learning Platform
 * Design System & Styles
 * Developed by GVision Italia S.r.l.
 */

/* ==================== CSS VARIABLES ==================== */
:root {
    /* Primary Colors - Corporate Blue/Teal */
    --primary-50: #e6f7f7;
    --primary-100: #b3e6e6;
    --primary-200: #80d4d4;
    --primary-300: #4dc3c3;
    --primary-400: #26b5b5;
    --primary-500: #00a8a8;
    --primary-600: #009090;
    --primary-700: #007878;
    --primary-800: #006060;
    --primary-900: #004848;
    
    /* Accent Colors - Vibrant Orange */
    --accent-400: #ff9f43;
    --accent-500: #ff8c00;
    --accent-600: #e67e00;
    
    /* Neutral Colors */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Semantic Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
    
    /* Backgrounds */
    --bg-primary: #f0f5f5;
    --bg-card: #ffffff;
    --bg-dark: var(--gray-900);
    
    /* Typography */
    --font-primary: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

/* ==================== RESET & BASE ==================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ==================== NAVBAR ==================== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-200);
    padding: 0.75rem 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    font-size: 1.75rem;
}

.logo-accent {
    color: var(--primary-500);
}

.nav-links {
    display: flex;
    gap: 0.5rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    color: var(--gray-600);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.nav-link.active {
    background: var(--primary-50);
    color: var(--primary-600);
}

.nav-link.nav-admin {
    color: var(--accent-500);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-stats {
    display: flex;
    gap: 0.75rem;
}

.stat-badge {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.375rem 0.75rem;
    background: var(--gray-100);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
}

.xp-badge {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: var(--gray-800);
}

.streak-badge {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    color: var(--gray-800);
}

.user-menu {
    position: relative;
}

.user-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem;
    padding-right: 0.75rem;
    border-radius: var(--radius-full);
    background: var(--gray-100);
    transition: all var(--transition-fast);
}

.user-btn:hover {
    background: var(--gray-200);
}

.user-avatar {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-400) 0%, var(--primary-600) 100%);
    color: white;
    font-weight: 600;
    border-radius: 50%;
}

.user-name {
    font-weight: 500;
    color: var(--gray-700);
}

.dropdown-arrow {
    font-size: 0.625rem;
    color: var(--gray-500);
    transition: transform var(--transition-fast);
}

.user-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    min-width: 200px;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
}

.user-menu:hover .user-dropdown,
.user-dropdown:hover {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-header {
    padding: 1rem;
    border-bottom: 1px solid var(--gray-100);
}

.dropdown-name {
    display: block;
    font-weight: 600;
    color: var(--gray-900);
}

.dropdown-code {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    transition: background var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--gray-50);
}

.logout-item {
    color: var(--error);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--gray-600);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* ==================== MAIN CONTENT ==================== */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    min-height: calc(100vh - 140px);
}

/* ==================== LOGIN PAGE ==================== */
.login-page {
    background: var(--bg-dark);
    min-height: 100vh;
}

.login-page .main-content {
    padding: 0;
    max-width: none;
}

.login-container {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    position: relative;
}

.login-background {
    position: relative;
    overflow: hidden;
}

.bg-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary-800) 0%, var(--primary-900) 50%, var(--gray-900) 100%);
}

.bg-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(255,255,255,0.1) 1px, transparent 1px),
        radial-gradient(circle at 75% 75%, rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 50px 50px;
}

.floating-elements {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.float-icon {
    position: absolute;
    font-size: 3rem;
    opacity: 0.15;
    animation: float 20s infinite ease-in-out;
}

.float-1 { top: 10%; left: 10%; animation-delay: 0s; }
.float-2 { top: 20%; right: 20%; animation-delay: -3s; }
.float-3 { top: 50%; left: 20%; animation-delay: -6s; }
.float-4 { top: 60%; right: 10%; animation-delay: -9s; }
.float-5 { top: 80%; left: 30%; animation-delay: -12s; }
.float-6 { top: 40%; right: 30%; animation-delay: -15s; }

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(20px, -20px) rotate(5deg); }
    50% { transform: translate(-10px, 10px) rotate(-5deg); }
    75% { transform: translate(15px, 15px) rotate(3deg); }
}

.login-card {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 3rem;
    background: white;
}

.login-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.login-logo {
    margin-bottom: 1rem;
}

.logo-emoji {
    font-size: 4rem;
    display: block;
    animation: bounce 2s infinite ease-in-out;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.login-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--gray-900);
}

.title-accent {
    color: var(--primary-500);
}

.login-subtitle {
    color: var(--gray-500);
    margin-top: 0.5rem;
}

.login-form {
    max-width: 400px;
    margin: 0 auto;
    width: 100%;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 1rem;
    font-size: 1.25rem;
}

.form-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-400);
    box-shadow: 0 0 0 4px var(--primary-50);
}

.toggle-password {
    position: absolute;
    right: 1rem;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.25rem;
}

.login-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    color: white;
    font-size: 1.125rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    margin-top: 1rem;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.login-footer {
    margin-top: 2rem;
    text-align: center;
}

.demo-credentials {
    font-size: 0.875rem;
    color: var(--gray-500);
    background: var(--gray-50);
    padding: 1rem;
    border-radius: var(--radius-md);
}

.login-info {
    position: absolute;
    bottom: 2rem;
    left: 2rem;
    right: 50%;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    padding-right: 2rem;
}

.info-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    color: white;
}

.info-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    display: block;
}

.info-card h3 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.info-card p {
    font-size: 0.75rem;
    opacity: 0.8;
}

/* ==================== DASHBOARD ==================== */
.dashboard {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.hero-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-800) 100%);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    color: white;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(255,255,255,0.1) 0%, transparent 70%);
}

.hero-greeting h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.hero-name {
    color: var(--accent-400);
}

.hero-subtitle {
    opacity: 0.9;
    font-size: 1.125rem;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-top: 1.5rem;
}

.hero-stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.25rem;
    font-weight: 800;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
}

.hero-visual {
    position: relative;
    z-index: 1;
}

.level-ring {
    position: relative;
    width: 140px;
    height: 140px;
}

.level-ring svg {
    transform: rotate(-90deg);
}

.ring-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.2);
    stroke-width: 8;
}

.ring-progress {
    fill: none;
    stroke: var(--accent-400);
    stroke-width: 8;
    stroke-linecap: round;
    transition: stroke-dasharray 1s ease;
}

.level-content {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.level-number {
    font-size: 2.5rem;
    font-weight: 800;
}

.level-label {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Badges Section */
.badges-section {
    padding: 1.5rem;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.section-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 1rem;
}

.badges-carousel {
    display: flex;
    gap: 1rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
}

.badge-card {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    background: var(--gray-50);
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    transition: all var(--transition-fast);
}

.badge-card.earned {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border-color: var(--accent-400);
}

.badge-icon {
    font-size: 2rem;
}

.badge-name {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--gray-700);
}

.badge-date {
    font-size: 0.75rem;
    color: var(--gray-500);
}

/* Courses Section */
.courses-section {
    padding: 1.5rem;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.course-filters {
    display: flex;
    gap: 0.5rem;
}

.filter-btn {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-600);
    background: var(--gray-100);
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    background: var(--gray-200);
}

.filter-btn.active {
    background: var(--primary-500);
    color: white;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.course-card {
    display: flex;
    flex-direction: column;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-fast);
    position: relative;
}

.course-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-200);
}

.course-card[data-status="completed"] {
    border-color: var(--success);
}

.course-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 1.25rem;
    background: var(--gray-50);
}

.course-emoji {
    font-size: 3rem;
}

.course-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.375rem;
}

.course-difficulty {
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.course-difficulty.base {
    background: #dbeafe;
    color: #1e40af;
}

.course-difficulty.intermedio {
    background: #fef3c7;
    color: #92400e;
}

.course-difficulty.avanzato {
    background: #fee2e2;
    color: #991b1b;
}

.course-duration {
    font-size: 0.75rem;
    color: var(--gray-500);
}

.course-body {
    padding: 1.25rem;
    flex: 1;
}

.course-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 0.5rem;
}

.course-description {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.course-progress-section {
    margin-top: auto;
}

.progress-bar {
    height: 6px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-400) 0%, var(--primary-600) 100%);
    border-radius: var(--radius-full);
    transition: width 0.5s ease;
}

.progress-text {
    display: block;
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: 0.375rem;
}

.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--gray-100);
}

.course-reward {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-weight: 600;
    color: var(--accent-500);
}

.course-btn {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.625rem 1.25rem;
    background: var(--primary-500);
    color: white;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.course-btn:hover {
    background: var(--primary-600);
}

.course-completed-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--success);
    color: white;
    border-radius: 50%;
    font-weight: 700;
}

/* Leaderboard Mini */
.leaderboard-section {
    padding: 1.5rem;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.view-all-link {
    color: var(--primary-500);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.view-all-link:hover {
    color: var(--primary-600);
}

.leaderboard-mini {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.leaderboard-row {
    display: grid;
    grid-template-columns: 40px 1fr 100px 80px 60px;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: var(--gray-50);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.leaderboard-row.current-user {
    background: var(--primary-50);
    border: 2px solid var(--primary-200);
}

.rank-position {
    font-weight: 700;
    text-align: center;
}

.rank-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.rank-avatar {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-100);
    color: var(--primary-700);
    font-weight: 600;
    border-radius: 50%;
    font-size: 0.875rem;
}

.rank-name {
    font-weight: 500;
}

.rank-dept {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.rank-xp {
    font-weight: 600;
    color: var(--accent-500);
}

.rank-streak {
    font-size: 0.875rem;
}

/* ==================== COURSE DETAIL PAGE ==================== */
.course-detail {
    max-width: 900px;
    margin: 0 auto;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray-600);
    font-weight: 500;
    margin-bottom: 1.5rem;
    transition: color var(--transition-fast);
}

.back-link:hover {
    color: var(--primary-500);
}

.course-header-detail {
    margin-bottom: 2rem;
}

.course-hero {
    background: white;
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.course-hero-content {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.course-emoji-large {
    font-size: 5rem;
    line-height: 1;
}

.course-info {
    flex: 1;
}

.course-category {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    background: var(--primary-100);
    color: var(--primary-700);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.course-title-large {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
}

.course-description-full {
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.course-meta-row {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.875rem;
    color: var(--gray-600);
}

/* Podcast Section */
.podcast-section {
    margin-bottom: 2rem;
}

.podcast-card {
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
    border-radius: var(--radius-xl);
    padding: 2rem;
    color: white;
}

.podcast-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.podcast-icon {
    font-size: 2.5rem;
}

.podcast-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
}

.podcast-badge {
    margin-left: auto;
    padding: 0.375rem 0.875rem;
    background: var(--accent-500);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.podcast-player {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

.player-visual {
    display: flex;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.sound-wave {
    display: flex;
    align-items: center;
    gap: 4px;
    height: 50px;
}

.sound-wave span {
    width: 4px;
    height: 20px;
    background: var(--primary-400);
    border-radius: 2px;
    transition: height 0.2s ease;
}

.sound-wave.playing span {
    animation: wave 0.5s infinite ease-in-out alternate;
}

.sound-wave.playing span:nth-child(1) { animation-delay: 0s; }
.sound-wave.playing span:nth-child(2) { animation-delay: 0.1s; }
.sound-wave.playing span:nth-child(3) { animation-delay: 0.2s; }
.sound-wave.playing span:nth-child(4) { animation-delay: 0.3s; }
.sound-wave.playing span:nth-child(5) { animation-delay: 0.4s; }
.sound-wave.playing span:nth-child(6) { animation-delay: 0.3s; }
.sound-wave.playing span:nth-child(7) { animation-delay: 0.2s; }
.sound-wave.playing span:nth-child(8) { animation-delay: 0.1s; }
.sound-wave.playing span:nth-child(9) { animation-delay: 0s; }
.sound-wave.playing span:nth-child(10) { animation-delay: 0.1s; }

@keyframes wave {
    0% { height: 10px; }
    100% { height: 40px; }
}

.player-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.player-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    color: white;
    transition: all var(--transition-fast);
}

.player-btn:hover {
    transform: scale(1.1);
}

.player-btn span {
    font-size: 1.5rem;
}

.player-btn small {
    font-size: 0.625rem;
    opacity: 0.7;
}

.play-btn {
    width: 64px;
    height: 64px;
    background: var(--primary-500);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.play-btn span {
    font-size: 2rem;
}

.player-timeline {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.time-current, .time-total {
    font-size: 0.875rem;
    font-family: var(--font-mono);
    min-width: 45px;
}

.timeline-bar {
    flex: 1;
    position: relative;
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
}

.timeline-input {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.timeline-fill {
    height: 100%;
    background: var(--primary-400);
    border-radius: var(--radius-full);
    width: 0%;
    transition: width 0.1s linear;
}

.player-extras {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.speed-control, .volume-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.speed-control select {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
}

.volume-input {
    width: 80px;
    height: 4px;
    -webkit-appearance: none;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
}

.volume-input::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    background: white;
    border-radius: 50%;
    cursor: pointer;
}

.podcast-note {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-top: 1.5rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Content Section */
.content-section {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
}

.content-tabs {
    display: flex;
    border-bottom: 1px solid var(--gray-200);
}

.content-tab {
    flex: 1;
    padding: 1rem;
    font-weight: 600;
    color: var(--gray-500);
    background: transparent;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

.content-tab:hover {
    color: var(--gray-700);
    background: var(--gray-50);
}

.content-tab.active {
    color: var(--primary-600);
    border-bottom-color: var(--primary-500);
}

.content-panel {
    display: none;
    padding: 2rem;
}

.content-panel.active {
    display: block;
}

.transcript-content h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--gray-800);
    margin: 1.5rem 0 0.75rem;
}

.transcript-content h3:first-child {
    margin-top: 0;
}

.transcript-content p {
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.learning-list {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.learning-list li {
    color: var(--gray-600);
    margin-bottom: 0.5rem;
}

.transcript-placeholder {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--gray-50);
    border-radius: var(--radius-md);
    text-align: center;
}

.materials-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.material-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--gray-50);
    border-radius: var(--radius-md);
}

.material-icon {
    font-size: 1.5rem;
}

.material-info {
    flex: 1;
}

.material-name {
    display: block;
    font-weight: 600;
    color: var(--gray-800);
}

.material-size {
    font-size: 0.75rem;
    color: var(--gray-500);
}

.material-download {
    padding: 0.5rem;
    font-size: 1.25rem;
}

.notes-area textarea {
    width: 100%;
    min-height: 200px;
    padding: 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    resize: vertical;
    font-family: inherit;
    line-height: 1.6;
}

.notes-area textarea:focus {
    outline: none;
    border-color: var(--primary-400);
}

.save-notes-btn {
    margin-top: 1rem;
    padding: 0.75rem 1.5rem;
    background: var(--primary-500);
    color: white;
    font-weight: 600;
    border-radius: var(--radius-md);
}

/* Quiz Section */
.quiz-section .quiz-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    border: 2px solid var(--primary-100);
}

.quiz-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.quiz-icon {
    font-size: 3rem;
}

.quiz-info h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-800);
}

.quiz-info p {
    color: var(--gray-500);
}

.quiz-details {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--gray-50);
    border-radius: var(--radius-md);
}

.quiz-detail {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.detail-text {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.quiz-history {
    margin-bottom: 1.5rem;
}

.quiz-history h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 0.75rem;
}

.quiz-result {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: var(--gray-50);
    border-radius: var(--radius-md);
    margin-bottom: 0.5rem;
}

.quiz-result.passed {
    background: #d1fae5;
}

.quiz-result.failed {
    background: #fee2e2;
}

.result-score {
    font-weight: 700;
}

.start-quiz-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    width: 100%;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    color: white;
    font-size: 1.125rem;
    font-weight: 700;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.start-quiz-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ==================== QUIZ PAGE ==================== */
.quiz-page {
    max-width: 800px;
    margin: 0 auto;
}

.quiz-container {
    background: white;
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
}

.quiz-page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.quiz-course-title {
    display: block;
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: 0.25rem;
}

.quiz-page-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

.quiz-timer {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--gray-100);
    border-radius: var(--radius-full);
    font-family: var(--font-mono);
    font-weight: 600;
}

.quiz-timer.warning {
    background: #fee2e2;
    color: var(--error);
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.quiz-progress-bar {
    height: 6px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.quiz-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-400) 0%, var(--primary-600) 100%);
    transition: width 0.3s ease;
}

.quiz-progress-info {
    text-align: center;
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: 2rem;
}

.question-card {
    display: none;
    animation: fadeIn 0.3s ease;
}

.question-card.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

.question-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.question-number {
    font-weight: 600;
    color: var(--primary-600);
}

.question-points {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.question-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.answer-options {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.answer-option {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--gray-50);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.answer-option:hover {
    border-color: var(--primary-300);
    background: var(--primary-50);
}

.answer-option input {
    display: none;
}

.option-indicator {
    width: 24px;
    height: 24px;
    border: 2px solid var(--gray-300);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.answer-option input:checked + .option-indicator {
    border-color: var(--primary-500);
    background: var(--primary-500);
}

.answer-option input:checked + .option-indicator::after {
    content: '✓';
    color: white;
    font-weight: 700;
}

.answer-option input:checked ~ .option-text {
    color: var(--primary-700);
    font-weight: 600;
}

.option-text {
    flex: 1;
    color: var(--gray-700);
}

.quiz-navigation {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray-200);
}

.quiz-nav-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.prev-btn {
    background: var(--gray-100);
    color: var(--gray-700);
}

.prev-btn:hover:not(:disabled) {
    background: var(--gray-200);
}

.prev-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.next-btn, .submit-btn {
    background: var(--primary-500);
    color: white;
}

.next-btn:hover, .submit-btn:hover {
    background: var(--primary-600);
}

.submit-btn {
    background: var(--success);
}

.question-dots {
    display: flex;
    gap: 0.5rem;
}

.dot {
    width: 12px;
    height: 12px;
    background: var(--gray-300);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dot.active {
    background: var(--primary-500);
    transform: scale(1.2);
}

.dot.answered {
    background: var(--success);
}

/* Result Modal */
.result-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.result-modal.show {
    opacity: 1;
    visibility: visible;
}

.result-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
    max-width: 400px;
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.result-modal.show .result-card {
    transform: scale(1);
}

.result-icon {
    font-size: 5rem;
    margin-bottom: 1rem;
}

.result-title {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
}

.result-score {
    margin-bottom: 1rem;
}

.score-label {
    display: block;
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: 0.5rem;
}

.score-value {
    font-size: 4rem;
    font-weight: 800;
    color: var(--primary-500);
}

.result-modal.success .score-value {
    color: var(--success);
}

.result-modal.failed .score-value {
    color: var(--error);
}

.result-message {
    color: var(--gray-600);
    margin-bottom: 2rem;
}

.result-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.result-btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.result-btn.secondary {
    background: var(--gray-100);
    color: var(--gray-700);
}

.result-btn.primary {
    background: var(--primary-500);
    color: white;
}

/* ==================== LEADERBOARD PAGE ==================== */
.leaderboard-page {
    max-width: 1000px;
    margin: 0 auto;
}

.page-header {
    text-align: center;
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 2rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.page-header p {
    color: var(--gray-500);
    margin-top: 0.5rem;
}

.podium-section {
    margin-bottom: 3rem;
}

.podium {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    gap: 1rem;
}

.podium-place {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.podium-avatar {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-400) 0%, var(--primary-600) 100%);
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    border-radius: 50%;
    margin-bottom: 0.5rem;
}

.podium-medal {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.podium-name {
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 0.25rem;
}

.podium-xp {
    font-size: 0.875rem;
    color: var(--accent-500);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.podium-block {
    width: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    font-weight: 800;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.first .podium-avatar {
    width: 80px;
    height: 80px;
    font-size: 2rem;
}

.first .podium-block {
    height: 120px;
    background: linear-gradient(180deg, #fbbf24 0%, #d97706 100%);
}

.second .podium-block {
    height: 90px;
    background: linear-gradient(180deg, #9ca3af 0%, #6b7280 100%);
}

.third .podium-block {
    height: 70px;
    background: linear-gradient(180deg, #d97706 0%, #92400e 100%);
}

.rankings-section {
    background: white;
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
}

.rankings-table {
    width: 100%;
}

.rankings-header {
    display: grid;
    grid-template-columns: 60px 1fr 120px 80px 80px 80px 100px;
    gap: 1rem;
    padding: 1rem;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 0.5rem;
}

.rankings-row {
    display: grid;
    grid-template-columns: 60px 1fr 120px 80px 80px 80px 100px;
    gap: 1rem;
    padding: 1rem;
    align-items: center;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.rankings-row:hover {
    background: var(--gray-50);
}

.rankings-row.current-user {
    background: var(--primary-50);
    border: 2px solid var(--primary-200);
}

.user-avatar-small {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-100);
    color: var(--primary-700);
    font-weight: 600;
    font-size: 0.875rem;
    border-radius: 50%;
    margin-right: 0.5rem;
}

.you-badge {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    background: var(--primary-500);
    color: white;
    font-size: 0.625rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    margin-left: 0.5rem;
    text-transform: uppercase;
}

.col-xp {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.xp-value {
    font-weight: 700;
    color: var(--accent-500);
}

.xp-label {
    font-size: 0.75rem;
    color: var(--gray-500);
}

.leaderboard-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.stat-card .stat-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.stat-card .stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--gray-800);
}

.stat-card .stat-label {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* ==================== CERTIFICATES PAGE ==================== */
.certificates-page {
    max-width: 1000px;
    margin: 0 auto;
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.certificate-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.certificate-preview {
    padding: 1.5rem;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.cert-border {
    border: 3px solid var(--primary-300);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    background: white;
}

.cert-content {
    text-align: center;
}

.cert-logo {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.cert-content h3 {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.cert-course {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary-600);
    margin-bottom: 1rem;
}

.cert-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 0.5rem;
}

.cert-date {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: 0.5rem;
}

.cert-code {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--gray-400);
}

.certificate-actions {
    display: flex;
    gap: 0.5rem;
    padding: 1rem;
}

.cert-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.cert-btn.download {
    background: var(--primary-500);
    color: white;
}

.cert-btn.share {
    background: var(--gray-100);
    color: var(--gray-700);
}

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: white;
    border-radius: var(--radius-xl);
}

.empty-icon {
    font-size: 5rem;
    opacity: 0.5;
}

.empty-state h2 {
    margin: 1rem 0 0.5rem;
    color: var(--gray-700);
}

.empty-state p {
    color: var(--gray-500);
    margin-bottom: 1.5rem;
}

.empty-btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--primary-500);
    color: white;
    font-weight: 600;
    border-radius: var(--radius-md);
}

/* ==================== ADMIN PAGES ==================== */
.admin-page {
    max-width: 1200px;
    margin: 0 auto;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.admin-title h1 {
    font-size: 1.75rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.admin-title p {
    color: var(--gray-500);
    margin-top: 0.25rem;
}

.admin-nav {
    display: flex;
    gap: 0.5rem;
    background: var(--gray-100);
    padding: 0.25rem;
    border-radius: var(--radius-md);
}

.admin-nav-link {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    color: var(--gray-600);
    transition: all var(--transition-fast);
}

.admin-nav-link:hover {
    color: var(--gray-800);
}

.admin-nav-link.active {
    background: white;
    color: var(--primary-600);
    box-shadow: var(--shadow-sm);
}

.admin-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.admin-stat-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.stat-icon-bg {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-size: 1.5rem;
}

.stat-icon-bg.blue { background: #dbeafe; }
.stat-icon-bg.green { background: #d1fae5; }
.stat-icon-bg.purple { background: #ede9fe; }
.stat-icon-bg.orange { background: #ffedd5; }

.stat-info .stat-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--gray-800);
}

.stat-info .stat-label {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.admin-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.admin-section {
    background: white;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.admin-section .section-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--gray-50);
    border-radius: var(--radius-md);
}

.activity-avatar {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-100);
    color: var(--primary-700);
    font-weight: 600;
    border-radius: 50%;
}

.activity-content {
    flex: 1;
    font-size: 0.875rem;
}

.activity-user {
    font-weight: 600;
    color: var(--gray-800);
}

.activity-action {
    color: var(--gray-500);
}

.activity-course {
    color: var(--primary-600);
}

.activity-time {
    font-size: 0.75rem;
    color: var(--gray-400);
}

.dept-chart {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.dept-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.dept-name {
    width: 120px;
    font-size: 0.875rem;
    color: var(--gray-600);
}

.dept-bar-fill {
    height: 24px;
    background: linear-gradient(90deg, var(--primary-400) 0%, var(--primary-600) 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 0.5rem;
    min-width: 30px;
}

.dept-count {
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
}

.quick-actions .section-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.actions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.action-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem;
    background: white;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.action-card:hover {
    border-color: var(--primary-300);
    background: var(--primary-50);
    transform: translateY(-2px);
}

.action-icon {
    font-size: 2rem;
}

.action-text {
    font-weight: 600;
    color: var(--gray-700);
    text-align: center;
}

/* Admin Users */
.admin-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.search-box {
    position: relative;
    width: 300px;
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-400);
}

.add-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--primary-500);
    color: white;
    font-weight: 600;
    border-radius: var(--radius-md);
}

.users-table {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.table-header {
    display: grid;
    grid-template-columns: 100px 1fr 200px 120px 120px 80px 100px;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: var(--gray-100);
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--gray-600);
}

.table-row {
    display: grid;
    grid-template-columns: 100px 1fr 200px 120px 120px 80px 100px;
    gap: 1rem;
    padding: 1rem 1.5rem;
    align-items: center;
    border-bottom: 1px solid var(--gray-100);
}

.table-row:last-child {
    border-bottom: none;
}

.progress-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background: var(--primary-100);
    color: var(--primary-700);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
}

.action-btn {
    padding: 0.375rem;
    font-size: 1rem;
    transition: transform var(--transition-fast);
}

.action-btn:hover {
    transform: scale(1.2);
}

/* Admin Courses */
.courses-admin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.course-admin-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.course-admin-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.course-emoji-admin {
    font-size: 2.5rem;
}

.course-admin-status {
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.course-admin-status.active {
    background: #d1fae5;
    color: #065f46;
}

.course-admin-status.inactive {
    background: #fee2e2;
    color: #991b1b;
}

.course-admin-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.course-admin-desc {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: 1rem;
}

.course-admin-stats {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1rem;
    padding: 1rem;
    background: var(--gray-50);
    border-radius: var(--radius-md);
}

.admin-stat-mini {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-mini-icon {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.stat-mini-value {
    font-size: 1.25rem;
    font-weight: 700;
}

.stat-mini-label {
    font-size: 0.75rem;
    color: var(--gray-500);
}

.course-admin-actions {
    display: flex;
    gap: 0.5rem;
}

.admin-action-btn {
    flex: 1;
    padding: 0.5rem;
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--gray-600);
    transition: all var(--transition-fast);
}

.admin-action-btn:hover {
    background: var(--primary-100);
    color: var(--primary-700);
}

/* Admin Reports */
.reports-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.report-section {
    background: white;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.report-section.full-width {
    grid-column: span 2;
}

.report-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.report-table {
    width: 100%;
}

.report-header {
    display: grid;
    grid-template-columns: 1fr 80px 80px 150px 100px;
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 0.5rem;
}

.report-row {
    display: grid;
    grid-template-columns: 1fr 80px 80px 150px 100px;
    gap: 1rem;
    padding: 0.75rem 1rem;
    align-items: center;
    border-bottom: 1px solid var(--gray-100);
}

.report-course {
    font-weight: 500;
}

.mini-progress {
    width: 80px;
    height: 6px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-right: 0.5rem;
    display: inline-block;
    vertical-align: middle;
}

.mini-progress-fill {
    height: 100%;
    background: var(--success);
}

.avg-score {
    font-weight: 600;
    color: var(--primary-600);
}

.export-options {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.export-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--gray-50);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.export-btn:hover {
    border-color: var(--primary-300);
    background: var(--primary-50);
}

.quick-stats-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.quick-stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--gray-50);
    border-radius: var(--radius-md);
}

.qs-label {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.qs-value {
    font-weight: 700;
    color: var(--gray-800);
}

/* ==================== FOOTER ==================== */
.footer {
    background: white;
    border-top: 1px solid var(--gray-200);
    padding: 1rem 0;
    margin-top: auto;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
    color: var(--gray-600);
}

.footer-brand {
    font-weight: 600;
    color: var(--gray-800);
}

.footer-divider {
    color: var(--gray-300);
}

.footer-credit a {
    color: var(--primary-500);
    font-weight: 500;
}

/* ==================== FLASH MESSAGES ==================== */
.flash-messages {
    position: fixed;
    top: 80px;
    right: 1.5rem;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.flash-message {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--gray-400);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.flash-error {
    border-left-color: var(--error);
}

.flash-success {
    border-left-color: var(--success);
}

.flash-warning {
    border-left-color: var(--warning);
}

.flash-close {
    font-size: 1.25rem;
    color: var(--gray-400);
    background: none;
    border: none;
    cursor: pointer;
}

/* ==================== MOBILE STYLES ==================== */
@media (max-width: 1024px) {
    .login-container {
        grid-template-columns: 1fr;
    }
    
    .login-background {
        display: none;
    }
    
    .login-info {
        display: none;
    }
    
    .admin-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .admin-grid {
        grid-template-columns: 1fr;
    }
    
    .actions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .reports-grid {
        grid-template-columns: 1fr;
    }
    
    .report-section.full-width {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .user-stats {
        display: none;
    }
    
    .user-name {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero-section {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .courses-grid {
        grid-template-columns: 1fr;
    }
    
    .leaderboard-row {
        grid-template-columns: 40px 1fr 60px;
    }
    
    .rank-dept, .rank-streak {
        display: none;
    }
    
    .rankings-header {
        grid-template-columns: 60px 1fr 80px 100px;
    }
    
    .rankings-row {
        grid-template-columns: 60px 1fr 80px 100px;
    }
    
    .col-dept, .col-badges, .col-streak {
        display: none;
    }
    
    .podium {
        flex-wrap: wrap;
    }
    
    .table-header, .table-row {
        grid-template-columns: 80px 1fr 100px;
    }
    
    .col-email, .col-dept, .col-progress, .col-actions {
        display: none;
    }
    
    .course-hero-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .quiz-timer {
        position: fixed;
        top: 70px;
        right: 1rem;
        z-index: 50;
    }
    
    .admin-stats {
        grid-template-columns: 1fr;
    }
    
    .actions-grid {
        grid-template-columns: 1fr;
    }
}

/* Mobile Navigation */
.mobile-nav {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: white;
    box-shadow: var(--shadow-lg);
    padding: 1rem;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 99;
}

.mobile-nav.show {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.mobile-nav-link {
    display: block;
    padding: 1rem;
    font-weight: 500;
    color: var(--gray-700);
    border-radius: var(--radius-md);
}

.mobile-nav-link:hover {
    background: var(--gray-100);
}

.mobile-nav-link.logout {
    color: var(--error);
}

.mobile-nav-divider {
    height: 1px;
    background: var(--gray-200);
    margin: 0.5rem 0;
}

/* ==================== NEW LOGIN LEFT PANEL ==================== */
.login-left-panel {
    background: linear-gradient(135deg, #00696b 0%, #004748 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem;
}

.left-panel-content {
    color: white;
    max-width: 500px;
}

.left-panel-content h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
}

.left-subtitle {
    font-size: 1.15rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    border-bottom: 1px solid rgba(255,255,255,0.2);
    padding-bottom: 1.5rem;
}

.left-panel-content p {
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 1rem;
    opacity: 0.95;
}

.left-panel-content strong {
    color: #ffb347;
}

.cert-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin: 1.5rem 0;
}

.cert-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: rgba(255,255,255,0.1);
    padding: 0.6rem 1rem;
    border-radius: 10px;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255,255,255,0.15);
}

.cert-item .cert-icon {
    font-size: 1.75rem;
}

.cert-item strong {
    color: white;
    font-size: 0.9rem;
}

.cert-item small {
    color: rgba(255,255,255,0.7);
    font-size: 0.75rem;
}

.features-list {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.2);
}

.feature-item {
    padding: 0.5rem 0;
    font-size: 0.95rem;
    opacity: 0.95;
}

@media (max-width: 900px) {
    .login-left-panel {
        display: none;
    }
}