/* ===== COMPLETE ENHANCED STYLES - ALL FEATURES ===== */

/* CSS RESET & BASE STYLES */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Enhanced Color Palette */
    --primary-color: #4F46E5;
    --primary-dark: #3730A3;
    --primary-light: #6366F1;
    --secondary-color: #059669;
    --accent-color: #F59E0B;
    --danger-color: #DC2626;
    --success-color: #10B981;
    --warning-color: #F59E0B;
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Enhanced Gradients */
    --gradient-primary: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
    --gradient-secondary: linear-gradient(135deg, #059669 0%, #047857 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.25) 0%, rgba(255, 255, 255, 0.1) 100%);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extra-bold: 800;
    --font-weight-black: 900;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* GLOBAL STYLES */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--gray-700);
    background: var(--gray-50);
    overflow-x: hidden;
}

/* ENHANCED TOP NAVIGATION */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    z-index: 1000;
    transition: all var(--transition-normal);
    padding: 1rem 0;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-lg);
    padding: 0.75rem 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--gray-800);
    text-decoration: none;
}

.logo-icon {
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text {
    font-weight: var(--font-weight-extra-bold);
    color: var(--gray-800);
}

.desktop-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: var(--gray-600);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background: rgba(79, 70, 229, 0.1);
    transform: translateY(-2px);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: var(--primary-color);
    border-radius: 50%;
}

/* ENHANCED USER PROFILE */
.nav-auth {
    display: flex;
    align-items: center;
}

.user-info {
    position: relative;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1rem;
    background: var(--gradient-glass);
    border: 1px solid rgba(79, 70, 229, 0.2);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
}

.user-profile:hover {
    background: rgba(79, 70, 229, 0.1);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid rgba(79, 70, 229, 0.3);
    object-fit: cover;
}

.user-name {
    font-weight: var(--font-weight-semibold);
    color: var(--gray-700) !important;
    font-size: 0.9rem !important;
    display: block !important;
    max-width: 120px !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    white-space: nowrap !important;
}

.profile-arrow {
    font-size: 0.75rem;
    color: var(--gray-500);
    transition: transform var(--transition-normal);
}

.profile-arrow.rotated {
    transform: rotate(180deg);
}

.profile-dropdown {
    position: absolute;
    top: calc(100% + 0.75rem);
    right: 0;
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    min-width: 300px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    z-index: 1001;
    border: 1px solid var(--gray-200);
}

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

.profile-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-100);
}

.dropdown-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 2px solid var(--gray-200);
    object-fit: cover;
}

.profile-details {
    flex: 1;
}

.profile-name {
    display: block;
    font-weight: var(--font-weight-semibold);
    color: var(--gray-800);
    margin-bottom: 0.25rem;
}

.profile-email {
    display: block;
    font-size: 0.875rem;
    color: var(--gray-500);
}

.profile-actions {
    padding: 0.75rem;
}

.profile-action {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.75rem;
    background: none;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    cursor: pointer;
    transition: background var(--transition-fast);
    color: var(--gray-700);
    font-weight: var(--font-weight-medium);
}

.profile-action:hover {
    background: var(--gray-50);
}

.profile-action.logout-btn {
    color: var(--danger-color);
}

.profile-action.logout-btn:hover {
    background: rgba(220, 38, 38, 0.05);
}

.btn-login {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
}

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

/* ULTRA MINIMAL MOBILE BOTTOM NAVIGATION */
.mobile-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: none;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.mobile-bottom-nav.show {
    display: block;
}

.mobile-nav-content {
    display: flex;
    justify-content: space-around;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(79, 70, 229, 0.1);
    padding: 1rem 0.75rem 1.5rem;
    box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.12);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    transform: translateY(0);
    opacity: 1;
}

.mobile-bottom-nav.minimized .mobile-nav-content {
    transform: translateY(100%);
    opacity: 0;
}

.mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.375rem;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: var(--gray-500);
    border-radius: var(--radius-xl);
    transition: all var(--transition-normal);
    min-width: 70px;
    position: relative;
}

.mobile-nav-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: -1;
}

.mobile-nav-item:hover::before,
.mobile-nav-item.active::before {
    opacity: 0.1;
}

.mobile-nav-item:hover,
.mobile-nav-item.active {
    color: var(--primary-color);
    transform: translateY(-3px);
}

.mobile-nav-item i {
    font-size: 1.25rem;
    transition: all var(--transition-normal);
}

.mobile-nav-item.active i {
    transform: scale(1.2);
}

.mobile-nav-item span {
    font-size: 0.6875rem;
    font-weight: var(--font-weight-semibold);
}

/* ULTRA MINIMAL TOGGLE BUTTON */
.mobile-nav-toggle-minimal {
    position: fixed;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 4px;
    cursor: pointer;
    z-index: 1002;
    transition: all var(--transition-normal);
    border-radius: 2px;
    backdrop-filter: blur(15px);
}

.toggle-line {
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 2px;
    transition: all var(--transition-normal);
    box-shadow: 0 2px 15px rgba(79, 70, 229, 0.4);
}

.mobile-bottom-nav.minimized .mobile-nav-toggle-minimal {
    bottom: 8px;
    width: 60px;
    height: 5px;
}

.mobile-bottom-nav.minimized .toggle-line {
    background: rgba(79, 70, 229, 0.9);
    box-shadow: 0 3px 20px rgba(79, 70, 229, 0.5);
}

/* ENHANCED HERO SECTION */
.hero-section {
    min-height: 100vh;
    background: var(--gradient-hero);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.particles-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.bubble-effects {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 2;
}

.bubble-enhanced {
    position: absolute;
    bottom: -100px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.4) 0%, rgba(255, 255, 255, 0.1) 70%, transparent 100%);
    animation: bubbleFloatEnhanced linear infinite;
    backdrop-filter: blur(3px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

@keyframes bubbleFloatEnhanced {
    0% {
        transform: translateY(0) rotate(0deg) scale(0.8);
        opacity: 0;
    }
    10% {
        opacity: 1;
        transform: scale(1);
    }
    90% {
        opacity: 0.8;
    }
    100% {
        transform: translateY(-120vh) rotate(360deg) scale(1.2);
        opacity: 0;
    }
}

.hero-content {
    text-align: center;
    z-index: 10;
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
}

.hero-text {
    margin-bottom: 3rem;
}

.hero-title {
    font-size: 4rem;
    font-weight: var(--font-weight-black);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.gradient-text {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: var(--font-weight-black);
}

.hero-subtitle {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: var(--font-weight-medium);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
    line-height: 1.4;
}

/* ENHANCED HERO BUTTONS */
.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-bottom: 3rem;
}

.hero-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--radius-xl);
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: rgba(255, 255, 255, 0.95);
    color: var(--primary-color);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-primary:hover {
    background: white;
    transform: translateY(-4px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-4px);
    box-shadow: 0 15px 35px rgba(255, 255, 255, 0.1);
}

.pulse-effect {
    animation: pulseGlow 2s infinite;
}

.glow-effect:hover {
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.5);
}

@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 20px rgba(255, 255, 255, 0.3); }
    50% { box-shadow: 0 0 30px rgba(255, 255, 255, 0.6); }
}

/* ENHANCED STATS CARDS */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.stat-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(15px);
    border-radius: var(--radius-2xl);
    padding: 2rem 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.4s ease;
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
    overflow: hidden;
}

.floating-card {
    animation: float 6s ease-in-out infinite;
}

.floating-card:nth-child(1) { animation-delay: 0s; }
.floating-card:nth-child(2) { animation-delay: 2s; }
.floating-card:nth-child(3) { animation-delay: 4s; }

.stat-card:hover {
    transform: translateY(-8px) scale(1.05);
    background: rgba(255, 255, 255, 0.25);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
}

.stat-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: rotate 10s linear infinite;
    z-index: -1;
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    flex-shrink: 0;
}

.stat-content {
    flex: 1;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: var(--font-weight-black);
    margin-bottom: 0.25rem;
    color: white;
    line-height: 1;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
    font-weight: var(--font-weight-medium);
    color: white;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    25% { transform: translateY(-10px) rotate(1deg); }
    50% { transform: translateY(-5px) rotate(-1deg); }
    75% { transform: translateY(-15px) rotate(0.5deg); }
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* BEAUTIFUL CURVED SEPARATOR */
.section-separator {
    position: relative;
    z-index: 5;
    margin-top: -1px;
}

.section-separator svg {
    width: 100%;
    height: 120px;
    display: block;
}

/* ENHANCED QUIZZES SECTION */
.quizzes-section {
    background: white;
    position: relative;
    z-index: 4;
    padding: 4rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
    color: var(--gray-800);
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--gray-600);
    font-weight: var(--font-weight-medium);
}

/* ULTRA COMPACT FILTER SECTION */
.quiz-filters-ultra-compact {
    background: white;
    border-radius: var(--radius-2xl);
    padding: 1.5rem 2rem;
    margin-bottom: 3rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-100);
}

.filter-row-compact {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 1.5rem;
    align-items: end;
}

.filter-group-compact {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-label-compact {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: var(--font-weight-semibold);
    color: var(--gray-700);
    font-size: 0.875rem;
}

.filter-select-compact,
.filter-input-compact {
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    transition: all var(--transition-normal);
    background: white;
    color: var(--gray-700);
}

.filter-select-compact:focus,
.filter-input-compact:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.btn-filter-compact {
    padding: 0.75rem 1.5rem;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    height: fit-content;
}

.btn-filter-compact:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(79, 70, 229, 0.4);
}

/* PERFECTLY SPACED QUIZ GRID */
.quiz-container-spaced {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.quiz-grid-spaced {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 2.5rem;
    margin-bottom: 3rem;
    padding: 0 1rem;
}

/* ENHANCED QUIZ CARDS */
.enhanced-card {
    position: relative;
    background: white;
    border-radius: var(--radius-2xl);
    padding: 2rem;
    border: 1px solid var(--gray-100);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.enhanced-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

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

.enhanced-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-2xl);
    border-color: rgba(79, 70, 229, 0.2);
}

.card-glow-effect {
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--gradient-primary);
    border-radius: calc(var(--radius-2xl) + 2px);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
}

.enhanced-card:hover .card-glow-effect {
    opacity: 0.15;
}

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

.quiz-category {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: var(--font-weight-semibold);
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
    background: rgba(79, 70, 229, 0.1);
    border-radius: var(--radius-full);
}

.quiz-date {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray-500);
    font-size: 0.875rem;
}

.quiz-title {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--gray-800);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.quiz-description {
    color: var(--gray-600);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.quiz-meta {
    margin-bottom: 2rem;
}

.quiz-info {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--gray-600);
    font-weight: var(--font-weight-medium);
}

.info-item i {
    color: var(--primary-color);
}

/* SINGLE QUIZ ACTION BUTTON */
.quiz-actions-single {
    display: flex;
}

.btn-quiz-start-enhanced {
    width: 100%;
    padding: 1rem 2rem;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-xl);
    font-weight: var(--font-weight-bold);
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    position: relative;
    overflow: hidden;
}

.button-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.6s ease;
}

.btn-quiz-start-enhanced:hover .button-shine {
    left: 100%;
}

.btn-quiz-start-enhanced:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 40px rgba(79, 70, 229, 0.4);
}

.btn-quiz-start-enhanced:active {
    transform: translateY(-2px);
}

/* ENHANCED PAGINATION */
.pagination-controls-enhanced {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 3rem;
    padding: 2rem 0;
    border-top: 1px solid var(--gray-200);
}

.pagination-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--gray-600);
    font-weight: var(--font-weight-medium);
}

.pagination-info i {
    color: var(--primary-color);
}

.btn-load-more-enhanced {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-xl);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-load-more-enhanced::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    transition: left 0.3s ease;
    z-index: -1;
}

.btn-load-more-enhanced:hover::before {
    left: 0;
}

.btn-load-more-enhanced:hover {
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(79, 70, 229, 0.3);
}

/* SPECIAL STATES */
.login-required-state,
.no-quizzes-state,
.connection-issue {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    border-radius: var(--radius-2xl);
    position: relative;
    overflow: hidden;
}

.login-required-state {
    background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
    border: 2px solid rgba(59, 130, 246, 0.2);
}

.login-icon,
.no-quiz-icon,
.connection-icon {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    color: white;
    font-size: 2.5rem;
    position: relative;
    z-index: 2;
}

.login-icon {
    background: linear-gradient(135deg, #3B82F6, #1D4ED8);
}

.no-quiz-icon {
    background: var(--gradient-primary);
}

.connection-icon {
    background: linear-gradient(135deg, #EF4444, #DC2626);
}

.login-required-state h3,
.no-quizzes-state h3,
.connection-issue h3 {
    color: var(--gray-800);
    margin-bottom: 1rem;
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
}

.login-required-state p,
.no-quizzes-state p,
.connection-issue p {
    color: var(--gray-600);
    margin-bottom: 2rem;
    font-size: 1.1rem;
    line-height: 1.6;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.login-features {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin: 2rem 0;
    align-items: center;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--gray-700);
    font-weight: var(--font-weight-medium);
}

.feature-item i {
    color: var(--success-color);
    font-size: 1.125rem;
}

.login-cta {
    padding: 1rem 2rem;
    font-size: 1.125rem;
    border-radius: var(--radius-xl);
    font-weight: var(--font-weight-bold);
    background: var(--gradient-primary);
    color: white;
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.pulse-animation {
    animation: pulseScale 2s infinite;
}

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

.login-cta:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 15px 40px rgba(59, 130, 246, 0.4);
}

/* MOBILE RESPONSIVE ENHANCEMENTS */
@media (max-width: 768px) {
    /* Show mobile bottom navigation */
    .mobile-bottom-nav {
        display: block;
    }
    
    /* Hide desktop navigation menu */
    .desktop-menu {
        display: none;
    }
    
    /* FIXED MOBILE HERO VISIBILITY */
    .hero-section {
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
        padding: 2rem 0;
    }
    
    .hero-content {
        width: 100%;
        z-index: 20 !important;
        position: relative !important;
        padding: 3rem 1rem 2rem !important;
        text-align: center;
    }
    
    .hero-text {
        margin-bottom: 2.5rem;
        position: relative;
        z-index: 25;
    }
    
    /* ENHANCED MOBILE HERO TITLE */
    .hero-title.mobile-visible {
        font-size: 3rem !important;
        line-height: 1.1 !important;
        margin-bottom: 1.5rem !important;
        text-shadow: 3px 3px 8px rgba(0, 0, 0, 0.5) !important;
        font-weight: var(--font-weight-black) !important;
        color: white !important;
        position: relative !important;
        z-index: 30 !important;
        display: block !important;
        visibility: visible !important;
        opacity: 1 !important;
    }
    
    .gradient-text {
        background: linear-gradient(135deg, #fbbf24, #f59e0b) !important;
        -webkit-background-clip: text !important;
        -webkit-text-fill-color: transparent !important;
        text-shadow: none !important;
        font-weight: var(--font-weight-black) !important;
        display: inline-block !important;
        position: relative !important;
    }
    
    .hero-subtitle.mobile-visible {
        font-size: 1.3rem !important;
        margin-bottom: 2.5rem !important;
        padding: 0 1rem !important;
        text-shadow: 2px 2px 6px rgba(0, 0, 0, 0.6) !important;
        color: rgba(255, 255, 255, 0.98) !important;
        font-weight: var(--font-weight-semibold) !important;
        line-height: 1.4 !important;
        position: relative !important;
        z-index: 30 !important;
        display: block !important;
        visibility: visible !important;
        opacity: 1 !important;
    }
    
    /* Mobile hero buttons */
    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
        margin-bottom: 3rem;
        padding: 0 1rem;
    }
    
    .hero-btn {
        width: 100%;
        justify-content: center;
        font-size: 1.125rem;
        padding: 1.25rem 2rem;
    }
    
    /* Mobile stats */
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
        margin-top: 3rem;
    }
    
    .stat-card {
        padding: 1.5rem;
        border-radius: var(--radius-xl);
        flex-direction: row;
        text-align: left;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    /* Mobile filters */
    .filter-row-compact {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .btn-filter-compact {
        justify-content: center;
        width: 100%;
        padding: 1rem 2rem;
    }
    
    /* Mobile quiz grid */
    .quiz-grid-spaced {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 0 0.5rem;
    }
    
    .enhanced-card {
        padding: 1.5rem;
        border-radius: var(--radius-xl);
    }
    
    /* Mobile pagination */
    .pagination-controls-enhanced {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
        padding: 1.5rem 0;
    }
    
    .btn-load-more-enhanced {
        width: 100%;
        justify-content: center;
        padding: 1.25rem 2rem;
    }
    
    /* Bottom padding for mobile navigation */
    .main-content {
        padding-bottom: 110px;
    }
    
    .mobile-bottom-nav.minimized + .main-content {
        padding-bottom: 50px;
    }
    
    /* Navigation adjustments */
    .nav-container {
        padding: 0 1rem;
    }
    
    .nav-logo {
        font-size: 1.25rem;
    }
    
    .logo-icon {
        font-size: 1.5rem;
    }
    
    /* User profile mobile */
    .user-name {
        max-width: 80px !important;
        font-size: 0.8rem !important;
    }
    
    .user-profile {
        padding: 0.375rem 0.75rem;
        gap: 0.5rem;
    }
    
    .user-avatar {
        width: 28px;
        height: 28px;
    }
    
    .profile-dropdown {
        min-width: 280px;
        right: -1rem;
    }
}

@media (max-width: 480px) {
    .hero-title.mobile-visible {
        font-size: 2.5rem !important;
    }
    
    .hero-subtitle.mobile-visible {
        font-size: 1.1rem !important;
        padding: 0 1.5rem !important;
    }
    
    .nav-container {
        padding: 0 1rem;
    }
    
    .quiz-container-spaced {
        padding: 0 1rem;
    }
    
    .hero-content {
        padding: 2rem 1rem !important;
    }
}

/* ANIMATIONS */
.animate-slideInUp {
    animation: slideInUp 0.8s ease-out forwards;
    opacity: 0;
    transform: translateY(30px);
}

@keyframes slideInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* LOADING STATES */
.quiz-loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    color: var(--gray-500);
}

.quiz-loading i {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: block;
    color: var(--primary-color);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.quiz-loading p {
    font-size: 1.125rem;
    font-weight: var(--font-weight-medium);
}

/* CONTAINER & LAYOUT */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* FOOTER */
.footer {
    background: var(--gray-800);
    color: white;
    padding: 3rem 0 1.5rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
}

.footer-logo i {
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-description {
    color: var(--gray-300);
    line-height: 1.6;
    max-width: 400px;
}

.footer-social h4 {
    margin-bottom: 1rem;
    color: white;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    text-decoration: none;
    transition: all var(--transition-normal);
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-700);
    color: var(--gray-400);
}

/* AD BANNER */
.ad-banner {
    background: var(--gray-100);
    padding: 2rem 0;
    margin: 3rem 0;
}

.ad-placeholder {
    background: var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 3rem;
    text-align: center;
    color: var(--gray-500);
    border: 2px dashed var(--gray-300);
}

.ad-placeholder i {
    font-size: 2rem;
    margin-bottom: 1rem;
    display: block;
}

/* RESPONSIVE FOOTER */
@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-description {
        max-width: none;
    }
}









/* ===== MOBILE FIXES ===== */

/* Fix 4: Show Platform Name on Mobile */
@media (max-width: 768px) {
    .logo-text {
        display: inline-block !important;
        font-size: 1.1rem !important;
        font-weight: 700 !important;
    }
    
    .nav-logo {
        font-size: 1.1rem !important;
    }
}

/* Fix 5: Mobile Navbar Auto-Hide */
@media (max-width: 768px) {
    .navbar {
        transition: transform 0.3s ease !important;
    }
    
    .navbar.scroll-down {
        transform: translateY(-100%) !important;
    }
    
    .navbar.scroll-up {
        transform: translateY(0) !important;
    }
    
    .navbar.at-top {
        transform: translateY(0) !important;
    }
    
    /* Prevent overlap with hero section */
    .hero-section {
        padding-top: 80px !important;
    }
}

/* ===== CUSTOM LOGO STYLING ===== */
.logo-image {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    margin-right: 8px;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

/* Mobile logo adjustments */
@media (max-width: 768px) {
    .logo-image {
        width: 32px;
        height: 32px;
    }
}

/* Admin panel logo */
.admin-logo .logo-image {
    width: 32px;
    height: 32px;
}