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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: #ffffff;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    font-weight: 700;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.full-width {
    width: 100%;
}

/* Header & Navigation */
.header {
    background: rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.nav-brand h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

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

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 6px;
}

.nav-link:hover,
.nav-link.active {
    background: rgba(255, 255, 255, 0.1);
}

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

.username {
    font-weight: 600;
}

.logout-btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.logout-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: white;
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* Main Content */
.main {
    margin-top: 80px;
}

/* Remove old section styling that might conflict */

/* Hero Section */
.hero {
    padding: 6rem 0;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: linear-gradient(45deg, #fff, #e0e7ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 3rem;
    opacity: 0.9;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 3rem;
}

.stat {
    text-align: center;
}

.stat strong {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: #ffd700;
}

.stat span {
    font-size: 0.9rem;
    opacity: 0.8;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 4rem;
}

.hero-visual {
    display: flex;
    justify-content: center;
    margin-top: 3rem;
}

.playlist-mockup {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 2rem;
    max-width: 400px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

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

.playlist-title {
    font-size: 1.2rem;
    font-weight: 600;
}

.playlist-subtitle {
    opacity: 0.7;
    font-size: 0.9rem;
}

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

.song-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
}

.song-info {
    flex: 1;
}

.song-name {
    font-weight: 500;
    font-size: 0.9rem;
}

.song-artist {
    opacity: 0.7;
    font-size: 0.8rem;
}

.song-player {
    font-size: 0.8rem;
    opacity: 0.8;
}

.song-player.spy {
    color: #ff6b6b;
    font-weight: 600;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(45deg, #1db954, #1ed760);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(29, 185, 84, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* Game Flow */
.game-flow {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.flow-step {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(45deg, #1db954, #1ed760);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

.step-content h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.step-content p {
    opacity: 0.9;
    line-height: 1.6;
}

/* Scoring Info */
.scoring-info {
    text-align: center;
}

.scoring-info h3 {
    font-size: 2rem;
    margin-bottom: 2rem;
}

.scoring-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.score-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem 1rem;
    border-radius: 12px;
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.score-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.score-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.score-points {
    font-size: 1.25rem;
    font-weight: 700;
    color: #ffd700;
    margin-bottom: 0.5rem;
}

.score-desc {
    opacity: 0.8;
    font-size: 0.9rem;
}

/* Auth Section */
.auth-container {
    max-width: 400px;
    margin: 0 auto;
}

.auth-form {
    background: rgba(255, 255, 255, 0.1);
    padding: 3rem;
    border-radius: 16px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

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

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.input-group input,
.input-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 1rem;
}

.input-group input:focus,
.input-group select:focus {
    outline: none;
    border-color: #1db954;
    background: rgba(255, 255, 255, 0.15);
}

.input-group input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.input-group small {
    display: block;
    margin-top: 0.25rem;
    opacity: 0.7;
    font-size: 0.875rem;
}

.auth-switch {
    text-align: center;
    margin-top: 2rem;
    opacity: 0.9;
}

.auth-switch a {
    color: #1ed760;
    text-decoration: none;
    font-weight: 500;
}

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

/* Dashboard */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
}

.dashboard-header h2 {
    font-size: 2.5rem;
}

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

.games-section h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

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

.empty-state {
    text-align: center;
    padding: 3rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    border: 2px dashed rgba(255, 255, 255, 0.2);
    grid-column: 1 / -1;
}

.empty-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h4 {
    margin-bottom: 0.5rem;
    opacity: 0.8;
}

.empty-state p {
    opacity: 0.6;
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: rgba(25, 20, 20, 0.95);
    border-radius: 16px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 2rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-header h3 {
    font-size: 1.5rem;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
}

.modal-body {
    padding: 2rem;
}

/* Game Cards */
.game-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 1.5rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
}

.game-card:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.15);
}

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

.game-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.game-status {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.game-status.active {
    background: linear-gradient(45deg, #1db954, #1ed760);
}

.game-status.waiting {
    background: linear-gradient(45deg, #ffd700, #ffed4a);
    color: #000;
}

.game-status.completed {
    background: rgba(255, 255, 255, 0.2);
}

.game-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.game-info-item {
    display: flex;
    flex-direction: column;
}

.game-info-label {
    font-size: 0.8rem;
    opacity: 0.7;
    margin-bottom: 0.25rem;
}

.game-info-value {
    font-weight: 500;
}

.game-progress {
    margin-bottom: 1rem;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(45deg, #1db954, #1ed760);
    transition: width 0.3s ease;
}

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

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 100px;
    right: 20px;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    background: rgba(0, 0, 0, 0.9);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    border-left: 4px solid;
    backdrop-filter: blur(10px);
    animation: slideIn 0.3s ease-out;
    max-width: 300px;
}

.toast.success {
    border-left-color: #1db954;
}

.toast.error {
    border-left-color: #ff6b6b;
}

.toast.info {
    border-left-color: #3498db;
}

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

/* Footer */
.footer {
    background: rgba(0, 0, 0, 0.2);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    padding: 3rem 0;
}

.footer-section h4 {
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #1ed760;
}

.footer-section p {
    opacity: 0.8;
    line-height: 1.6;
}

.footer-bottom {
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .game-flow {
        grid-template-columns: 1fr;
    }
    
    .scoring-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .dashboard-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .games-grid {
        grid-template-columns: 1fr;
    }
    
    .game-info {
        grid-template-columns: 1fr;
    }
    
    .auth-form {
        padding: 2rem 1.5rem;
    }
    
    .modal-content {
        width: 95%;
        margin: 1rem;
    }
    
    .modal-header,
    .modal-body {
        padding: 1.5rem;
    }
    
    .playlist-mockup {
        max-width: 100%;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 4rem 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .auth-form {
        padding: 1.5rem;
    }
    
    .modal-header,
    .modal-body {
        padding: 1rem;
    }
    
    .step-number {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
    
    .score-card {
        padding: 1.5rem 1rem;
    }
}

/* Loading States */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #1db954;
    animation: spin 1s ease-in-out infinite;
}

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

/* Form Validation */
.input-group.error input {
    border-color: #ff6b6b;
    background: rgba(255, 107, 107, 0.1);
}

.input-group .error-message {
    color: #ff6b6b;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: block;
}

/* Animations */
.fade-in {
    animation: fadeIn 0.5s ease-out;
}

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

.scale-in {
    animation: scaleIn 0.3s ease-out;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Accessibility */
.btn:focus,
.nav-link:focus,
input:focus,
select:focus {
    outline: 2px solid #1db954;
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}