/* Root Variables */
:root {
    --primary-color: #8B1874;
    --secondary-color: #C41E3A;
    --accent-color: #FF1493;
    --dark-purple: #4B0C3B;
    --light-purple: #D8BFD8;
    --white: #FFFFFF;
    --black: #000000;
    --gray-light: #F5F5F5;
    --gray-medium: #CCCCCC;
    --gray-dark: #333333;
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    --gradient-secondary: linear-gradient(135deg, var(--dark-purple), var(--primary-color));
    --shadow-light: 0 2px 10px rgba(139, 24, 116, 0.1);
    --shadow-medium: 0 4px 20px rgba(139, 24, 116, 0.2);
    --shadow-heavy: 0 8px 30px rgba(139, 24, 116, 0.3);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Dark Theme Variables */
[data-theme="dark"] {
    --white: #1a1a1a;
    --black: #FFFFFF;
    --gray-light: #2a2a2a;
    --gray-medium: #404040;
    --gray-dark: #E0E0E0;
}

/* Midnight Theme Variables */
[data-theme="midnight"] {
    --primary-color: #6A0B7A;
    --secondary-color: #4B0082;
    --accent-color: #9370DB;
    --dark-purple: #2E003E;
    --light-purple: #8A2BE2;
    --white: #000000;
    --black: #E6E6FA;
    --gray-light: #1a0f2e;
    --gray-medium: #2d1b3d;
    --gray-dark: #C8A2C8;
    --gradient-primary: linear-gradient(135deg, #000428, #004e92);
    --gradient-secondary: linear-gradient(135deg, #2E003E, #6A0B7A);
    --shadow-light: 0 2px 10px rgba(106, 11, 122, 0.3);
    --shadow-medium: 0 4px 20px rgba(106, 11, 122, 0.4);
    --shadow-heavy: 0 8px 30px rgba(106, 11, 122, 0.5);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--gray-light);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 10px;
    border: 2px solid var(--gray-light);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gradient-secondary);
}

/* Firefox Scrollbar */
html {
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) var(--gray-light);
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--white);
    color: var(--black);
    line-height: 1.6;
    overflow-x: hidden;
    transition: var(--transition);
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    background: var(--gradient-primary);
    color: var(--white);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-medium);
    transition: var(--transition);
    font-size: 1.2rem;
}

.theme-toggle:hover {
    transform: scale(1.1) rotate(15deg);
    box-shadow: var(--shadow-heavy);
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-medium);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 999;
    transition: var(--transition);
}

[data-theme="dark"] .navbar {
    background: rgba(26, 26, 26, 0.95);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h1 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--black);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
}

.nav-link:hover {
    background: var(--gradient-primary);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-light);
}

.nav-link.active {
    background: var(--gradient-primary);
    color: var(--white);
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--black);
    border-radius: 2px;
    transition: var(--transition);
}

/* Main Content */
.main-content {
    margin-top: 70px;
    min-height: calc(100vh - 140px);
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease-in;
}

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

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

/* Hero Section */
.hero {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    min-height: 80vh;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--gray-dark);
    margin-bottom: 2rem;
}

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

.stat-item {
    text-align: center;
    padding: 1rem;
    background: rgba(139, 24, 116, 0.1);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    color: var(--gray-dark);
    font-size: 0.9rem;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.floating-quiz-card {
    width: 200px;
    height: 200px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--white);
    animation: float 3s ease-in-out infinite;
    box-shadow: var(--shadow-heavy);
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* Info Section */
.info-section {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 3rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.info-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

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

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

.info-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-heavy);
    border-color: var(--primary-color);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    font-size: 1.5rem;
    color: var(--white);
}

.info-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.info-card p {
    color: var(--gray-dark);
    margin-bottom: 1.5rem;
}

.card-stats {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    color: var(--gray-dark);
}

.card-stats span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Quiz Container */
.quiz-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

.quiz-header {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
    text-align: center;
}

.quiz-header h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.quiz-progress {
    max-width: 300px;
    margin: 0 auto;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: var(--white);
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 10%;
}

.progress-text {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Quiz Content */
.quiz-content {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    margin-bottom: 2rem;
}

.question-container {
    margin-bottom: 2rem;
}

.question-text {
    font-size: 1.3rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    color: var(--black);
}

.answers-grid {
    display: grid;
    gap: 1rem;
}

.answer-option {
    padding: 1rem;
    border: 2px solid var(--gray-medium);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    background: var(--white);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.answer-option:hover {
    border-color: var(--primary-color);
    background: rgba(139, 24, 116, 0.05);
}

.answer-option.selected {
    border-color: var(--primary-color);
    background: var(--gradient-primary);
    color: var(--white);
}

.answer-option.correct {
    border-color: #28a745;
    background: #28a745;
    color: var(--white);
}

.answer-option.incorrect {
    border-color: #dc3545;
    background: #dc3545;
    color: var(--white);
}

/* Quiz Controls */
.quiz-controls {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

.btn {
    padding: 0.8rem 2rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-light);
}

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

.btn-secondary {
    background: var(--gray-light);
    color: var(--black);
    border: 2px solid var(--gray-medium);
}

.btn-secondary:hover {
    background: var(--gray-medium);
    transform: translateY(-2px);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Quiz Results */
.quiz-results {
    background: var(--white);
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    text-align: center;
}

.results-content h3 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

.score-display {
    margin-bottom: 2rem;
}

.score-number {
    font-size: 4rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.score-text {
    font-size: 1.2rem;
    color: var(--gray-dark);
}

.results-message {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: var(--gray-dark);
}

/* Footer */
.footer {
    background: var(--gray-light);
    padding: 2rem;
    text-align: center;
    border-top: 1px solid var(--gray-medium);
}

.footer-content p {
    color: var(--gray-dark);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-medium);
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
        padding: 2rem 1rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    .quiz-container {
        padding: 1rem;
    }
    
    .quiz-controls {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .info-card {
        padding: 1.5rem;
    }
}

/* Animations and Micro-interactions */
.info-card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 100%;
}

.answer-option::before {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid currentColor;
    border-radius: 50%;
    flex-shrink: 0;
}

.answer-option.selected::before {
    background: currentColor;
    box-shadow: inset 0 0 0 4px var(--white);
}

/* Wave Selection Interface */
.wave-selection {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    margin-bottom: 2rem;
}

.wave-selection h3 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.waves-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.wave-card {
    background: var(--white);
    border: 2px solid var(--gray-medium);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

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

.wave-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
    border-color: var(--primary-color);
}

.wave-card.completed {
    border-color: #28a745;
    background: linear-gradient(135deg, rgba(40, 167, 69, 0.1), rgba(40, 167, 69, 0.05));
}

.wave-card.completed::before {
    background: linear-gradient(135deg, #28a745, #20c997);
    transform: scaleX(1);
}

.wave-card.locked {
    opacity: 0.6;
    cursor: not-allowed;
    background: var(--gray-light);
}

.wave-card.locked:hover {
    transform: none;
    box-shadow: var(--shadow-light);
}

.wave-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 2rem;
    color: var(--white);
    position: relative;
    transition: var(--transition);
}

.wave-card.completed .wave-icon {
    background: linear-gradient(135deg, #28a745, #20c997);
}

.wave-card.locked .wave-icon {
    background: var(--gray-medium);
}

.wave-check {
    position: absolute;
    top: -5px;
    right: -5px;
    background: #28a745;
    border: 3px solid var(--white);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
}

.wave-lock {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--gray-dark);
    border: 3px solid var(--white);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    color: var(--white);
}

.wave-card h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.wave-card.completed h4 {
    color: #28a745;
}

.wave-difficulty {
    display: inline-block;
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.wave-difficulty.beginner {
    background: rgba(40, 167, 69, 0.1);
    color: #28a745;
    border: 1px solid rgba(40, 167, 69, 0.3);
}

.wave-difficulty.intermediate {
    background: rgba(255, 193, 7, 0.1);
    color: #ffc107;
    border: 1px solid rgba(255, 193, 7, 0.3);
}

.wave-difficulty.expert {
    background: rgba(220, 53, 69, 0.1);
    color: #dc3545;
    border: 1px solid rgba(220, 53, 69, 0.3);
}

.wave-stats {
    display: flex;
    justify-content: space-around;
    font-size: 0.9rem;
    color: var(--gray-dark);
    margin-bottom: 1rem;
}

.wave-stats span {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.completion-badge {
    background: #28a745;
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    display: inline-block;
}

/* Results buttons */
.results-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.results-buttons .btn {
    min-width: 150px;
}

/* Wave animations */
.wave-card:hover .wave-icon {
    transform: scale(1.1) rotate(5deg);
}

.wave-card.completed .wave-icon {
    animation: completedPulse 2s infinite;
}

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

/* Achievement System */
.achievement-toast {
    position: fixed;
    top: 100px;
    right: -400px;
    width: 350px;
    background: var(--white);
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-heavy);
    z-index: 1001;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.achievement-toast.show {
    right: 20px;
    animation: achievementBounce 0.6s ease;
}

.achievement-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--white);
    flex-shrink: 0;
}

.achievement-content h4 {
    margin: 0 0 0.5rem 0;
    color: var(--primary-color);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.achievement-content h5 {
    margin: 0 0 0.25rem 0;
    color: var(--black);
    font-size: 1.1rem;
    font-weight: 600;
}

.achievement-content p {
    margin: 0;
    color: var(--gray-dark);
    font-size: 0.9rem;
}

@keyframes achievementBounce {
    0% { transform: translateX(100px) scale(0.8); opacity: 0; }
    50% { transform: translateX(-10px) scale(1.05); opacity: 1; }
    100% { transform: translateX(0) scale(1); opacity: 1; }
}

/* Enhanced progress indicators */
.wave-card .progress-indicator {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 4px;
    background: rgba(139, 24, 116, 0.2);
    border-radius: 2px;
    overflow: hidden;
}

.wave-card .progress-fill-indicator {
    height: 100%;
    background: var(--gradient-primary);
    width: 0%;
    transition: width 0.8s ease;
}

.wave-card.completed .progress-fill-indicator {
    width: 100%;
    background: linear-gradient(135deg, #28a745, #20c997);
}

/* Statistics enhancements */
.stat-item {
    position: relative;
    overflow: hidden;
}

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

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

/* Responsive design for achievements */
@media (max-width: 480px) {
    .achievement-toast {
        width: 300px;
        right: -320px;
    }
    
    .achievement-toast.show {
        right: 10px;
    }
    
    .achievement-icon {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .achievement-content h5 {
        font-size: 1rem;
    }
    
    .achievement-content p {
        font-size: 0.8rem;
    }
}

/* Category completion badges */
.category-completion {
    position: absolute;
    top: 10px;
    right: 10px;
    background: #28a745;
    color: var(--white);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: bold;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading animation */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.loading {
    animation: pulse 1.5s infinite;
}

/* Success/Error states */
.success-animation {
    animation: successBounce 0.6s ease;
}

.error-animation {
    animation: errorShake 0.6s ease;
}

@keyframes successBounce {
    0%, 20%, 60%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    80% { transform: translateY(-5px); }
}

@keyframes errorShake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

/* Multiplayer Styles */
.multiplayer-section {
    padding: 2rem;
}

.multiplayer-lobby {
    max-width: 800px;
    margin: 0 auto;
}

.lobby-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.option-card {
    background: var(--white);
    border: 2px solid var(--gray-medium);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-light);
}

.option-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-medium);
    transform: translateY(-5px);
}

.option-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.join-room-form {
    background: var(--gray-light);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
}

.form-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    justify-content: center;
}

.form-group input {
    padding: 0.8rem 1rem;
    border: 2px solid var(--gray-medium);
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 2px;
    width: 200px;
}

.room-interface {
    max-width: 1000px;
    margin: 0 auto;
}

.room-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--gray-light);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.room-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.room-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.players-panel, .game-settings {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-light);
}

.players-list {
    margin-top: 1rem;
}

.player-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.8rem;
    background: var(--gray-light);
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.player-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

.player-host {
    background: var(--gradient-secondary);
}

.setting-group {
    margin-bottom: 1rem;
}

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

.setting-group select {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid var(--gray-medium);
    border-radius: var(--border-radius);
    background: var(--white);
    font-size: 1rem;
}

.game-controls {
    grid-column: 1 / -1;
    text-align: center;
    background: var(--gray-light);
    border-radius: var(--border-radius);
    padding: 2rem;
}

.game-info {
    margin-top: 1rem;
    color: var(--gray-dark);
    font-style: italic;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.2rem;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.hero-actions {
    margin: 2rem 0;
}

/* Multiplayer Quiz Styles */
.multiplayer-quiz-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--gray-light);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.quiz-progress {
    flex: 1;
    margin-right: 2rem;
}

.players-scores {
    display: flex;
    gap: 1rem;
}

.player-score-item {
    text-align: center;
    background: var(--white);
    border-radius: 8px;
    padding: 0.8rem;
    min-width: 80px;
}

.player-score-item .player-name {
    font-size: 0.9rem;
    color: var(--gray-dark);
}

.player-score-item .score {
    font-weight: bold;
    font-size: 1.2rem;
    color: var(--primary-color);
}

.quiz-question-container {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-light);
}

.quiz-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--gray-light);
    border-radius: var(--border-radius);
    padding: 1rem 2rem;
}

.timer-display {
    font-weight: bold;
    font-size: 1.1rem;
    color: var(--primary-color);
}

.multiplayer-results {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 3rem;
    text-align: center;
    box-shadow: var(--shadow-medium);
}

.final-results {
    margin: 2rem 0;
}

.result-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    margin-bottom: 1rem;
    background: var(--gray-light);
    border-radius: var(--border-radius);
}

.result-item.winner {
    background: var(--gradient-primary);
    color: white;
}

.result-item .position {
    font-size: 1.5rem;
    font-weight: bold;
    min-width: 50px;
}

.result-item .player-info {
    flex: 1;
    text-align: left;
}

.result-item .name {
    font-weight: bold;
    font-size: 1.1rem;
}

.result-item .score {
    opacity: 0.8;
}

.game-actions {
    margin-top: 2rem;
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Responsive Design for Multiplayer */
@media (max-width: 768px) {
    .room-content {
        grid-template-columns: 1fr;
    }
    
    .room-header {
        flex-direction: column;
        gap: 1rem;
    }
    
    .form-group {
        flex-direction: column;
    }
    
    .form-group input {
        width: 100%;
    }
    
    .multiplayer-quiz-header {
        flex-direction: column;
        gap: 1rem;
    }
    
    .quiz-progress {
        margin-right: 0;
    }
    
    .players-scores {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .quiz-controls {
        flex-direction: column;
        gap: 1rem;
    }
    
    .game-actions {
        flex-direction: column;
    }
}