:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --bg-hover: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--text-primary);
    overflow-x: hidden;
}

/* Navigation */
.navbar {
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

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

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    cursor: pointer;
}

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

/* Main Content */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

.page {
    display: none;
    animation: fadeIn 0.3s ease-in;
}

.page.active {
    display: block;
}

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

/* Hero Section */
.hero-section {
    text-align: center;
    padding: 4rem 2rem;
    margin-bottom: 4rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #fff 0%, #e0e7ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
}

/* Games Grid */
.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.game-card {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.game-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
    background: rgba(30, 41, 59, 0.95);
}

.game-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.game-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.game-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Auth Page */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 70vh;
    padding: 2rem;
}

.auth-card {
    background: rgba(30, 41, 59, 0.9);
    backdrop-filter: blur(10px);
    border-radius: 1rem;
    padding: 2.5rem;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.auth-card h2 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 0.5rem;
    background: rgba(15, 23, 42, 0.5);
    color: var(--text-primary);
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.auth-switch {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--text-secondary);
}

.auth-switch a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.auth-switch a:hover {
    text-decoration: underline;
}

/* Lobby Page */
.lobby-container {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 1rem;
    padding: 2rem;
}

.lobby-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.lobby-header h2 {
    font-size: 2rem;
}

.lobby-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    background: rgba(15, 23, 42, 0.5);
    border: 2px solid transparent;
    border-radius: 0.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s;
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
}

.tab-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.rooms-list {
    display: grid;
    gap: 1rem;
}

.room-item {
    background: rgba(15, 23, 42, 0.5);
    border-radius: 0.75rem;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.room-item:hover {
    border-color: var(--primary-color);
    transform: translateX(5px);
}

.room-item-info h3 {
    margin-bottom: 0.5rem;
}

.room-item-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.private-join {
    margin-top: 2rem;
}

.join-form {
    display: flex;
    gap: 1rem;
}

.join-form input {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 0.5rem;
    background: rgba(15, 23, 42, 0.5);
    color: var(--text-primary);
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* Game Room */
.room-container {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 1rem;
    padding: 2rem;
}

.room-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid rgba(255, 255, 255, 0.1);
}

.room-info h2 {
    margin-bottom: 0.5rem;
}

.room-code {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.room-code span {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: 2px;
}

.room-players,
.room-games {
    margin-bottom: 2rem;
}

.room-players h3,
.room-games h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.players-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
}

.player-card {
    background: rgba(15, 23, 42, 0.5);
    border-radius: 0.75rem;
    padding: 1rem;
    text-align: center;
    border: 2px solid transparent;
    transition: all 0.3s;
}

.player-card.host {
    border-color: var(--primary-color);
}

.player-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary-color);
    margin: 0 auto 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.player-card h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.player-card .score {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.games-grid-small {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.game-area {
    background: rgba(15, 23, 42, 0.5);
    border-radius: 1rem;
    padding: 2rem;
    margin-top: 2rem;
    min-height: 400px;
}

/* Profile Page */
.profile-container {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 1rem;
    padding: 2rem;
}

.profile-header {
    display: flex;
    gap: 2rem;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid rgba(255, 255, 255, 0.1);
}

.profile-avatar-large {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    border: 4px solid var(--primary-color);
}

.profile-info h2 {
    margin-bottom: 0.5rem;
}

.profile-info p {
    color: var(--text-secondary);
}

.profile-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: rgba(15, 23, 42, 0.5);
    border-radius: 0.75rem;
    padding: 1.5rem;
    text-align: center;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

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

.profile-settings {
    background: rgba(15, 23, 42, 0.5);
    border-radius: 0.75rem;
    padding: 1.5rem;
}

.profile-settings h3 {
    margin-bottom: 1.5rem;
}

/* Game Specific Styles */
.game-container {
    text-align: center;
}

.game-title {
    font-size: 2rem;
    margin-bottom: 2rem;
}

.game-content {
    background: rgba(15, 23, 42, 0.5);
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 1rem;
}

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

.vote-btn {
    flex: 1;
    max-width: 300px;
    padding: 1.5rem;
    background: rgba(99, 102, 241, 0.2);
    border: 2px solid var(--primary-color);
    border-radius: 0.75rem;
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.vote-btn:hover {
    background: var(--primary-color);
    transform: scale(1.05);
}

.vote-results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.result-item {
    background: rgba(15, 23, 42, 0.5);
    border-radius: 0.75rem;
    padding: 1rem;
}

.result-bar {
    height: 30px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 0.5rem;
    margin-top: 0.5rem;
    overflow: hidden;
    position: relative;
}

.result-fill {
    height: 100%;
    background: var(--primary-color);
    transition: width 0.5s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .games-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
    
    .nav-links {
        gap: 1rem;
        font-size: 0.9rem;
    }
    
    .lobby-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .profile-header {
        flex-direction: column;
        text-align: center;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Notifications */
.notification {
    position: fixed;
    top: 80px;
    right: 20px;
    background: rgba(30, 41, 59, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    z-index: 2000;
    animation: slideIn 0.3s ease-out;
    border-left: 4px solid var(--primary-color);
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

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

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