:root {
    --primary-blue: #2196F3;
    --success-green: #4CAF50;
    --warning-amber: #FFC107;
    --danger-red: #F44336;
    --accent-purple: #9C27B0;
    --text-dark: #333;
    --text-light: #666;
    --background-light: #fafafa;
    --card-background: #ffffff;
    --border-light: #e0e0e0;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
    --paper-texture: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23f5f5f5' fill-opacity='0.4'%3E%3Ccircle cx='2' cy='2' r='1'/%3E%3Ccircle cx='32' cy='12' r='1'/%3E%3Ccircle cx='52' cy='22' r='1'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--background-light);
    background-image: var(--paper-texture);
    color: var(--text-dark);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding-bottom: 80px;
}

header {
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-purple));
    color: white;
    padding: 1rem;
    text-align: center;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

header h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

main {
    flex: 1;
    padding: 1rem;
}

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

.section {
    display: none;
}

.section.active {
    display: block;
}

.card {
    background: var(--card-background);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-light);
}

.welcome-card {
    background: linear-gradient(135deg, var(--success-green), var(--primary-blue));
    color: white;
    text-align: center;
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
}

.welcome-card h2 {
    margin-bottom: 0.5rem;
    font-size: 1.8rem;
}

.welcome-card p {
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.hidden {
    display: none !important;
}

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

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

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-light);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

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

.mood-filters {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    padding: 0.5rem;
    border: 2px solid var(--border-light);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.checkbox-label:hover {
    background: var(--background-light);
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
    transform: scale(1.2);
}

.checkbox-label input[type="checkbox"]:checked + span,
.checkbox-label:has(input[type="checkbox"]:checked) {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
}

.primary-btn, .secondary-btn, .danger-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: white;
}

.primary-btn {
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-purple));
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
}

.secondary-btn {
    background: var(--text-light);
}

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

.danger-btn {
    background: var(--danger-red);
}

.danger-btn:hover {
    background: #d32f2f;
    transform: translateY(-2px);
}

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

.participants-list {
    margin-bottom: 1.5rem;
}

.participants-list h4 {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

#participants-display {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.participant-tag {
    background: var(--primary-blue);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.suggestion-form {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.suggestion-form input {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid var(--border-light);
    border-radius: 8px;
    font-size: 1rem;
}

.suggestion-form input:focus {
    outline: none;
    border-color: var(--primary-blue);
}

.movies-container h4 {
    margin-bottom: 1rem;
    color: var(--text-dark);
}

#movies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.movie-card {
    background: var(--card-background);
    border: 2px solid var(--border-light);
    border-radius: 12px;
    padding: 1rem;
    transition: all 0.3s ease;
}

.movie-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.movie-header {
    display: flex;
    justify-content: between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
}

.movie-title {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.streaming-info {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    margin-bottom: 0.75rem;
}

.streaming-badge {
    background: var(--success-green);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
}

.streaming-badge.unavailable {
    background: var(--text-light);
}

.vote-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
}

.vote-btn {
    background: var(--warning-amber);
    color: var(--text-dark);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.vote-btn:hover {
    background: #ffb300;
    transform: scale(1.05);
}

.vote-btn.voted {
    background: var(--success-green);
    color: white;
}

.vote-count {
    font-weight: 600;
    color: var(--primary-blue);
    font-size: 1.1rem;
}

.results-container {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 2px solid var(--border-light);
}

.winner-card {
    background: linear-gradient(135deg, var(--success-green), var(--primary-blue));
    color: white;
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    margin-bottom: 1rem;
}

.winner-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.mark-watched-btn {
    background: var(--accent-purple);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    margin-top: 1rem;
    transition: all 0.3s ease;
}

.mark-watched-btn:hover {
    background: #7b1fa2;
    transform: translateY(-2px);
}

.history-filters {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: flex-end;
}

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

.history-item {
    background: var(--card-background);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 1rem;
    box-shadow: var(--shadow);
}

.history-item h4 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.history-meta {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.empty-state {
    text-align: center;
    color: var(--text-light);
    padding: 3rem 1rem;
    grid-column: 1 / -1;
}

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

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--card-background);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 1.5rem;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease;
    color: var(--text-dark);
}

.faq-question:hover {
    background: var(--background-light);
}

.faq-icon {
    font-size: 1.2rem;
    color: var(--primary-blue);
    transition: transform 0.3s ease;
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-light);
    line-height: 1.6;
    animation: slideDown 0.3s ease-out;
}

.faq-answer[hidden] {
    display: none;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--card-background);
    border-top: 1px solid var(--border-light);
    display: flex;
    justify-content: space-around;
    padding: 0.75rem 0;
    box-shadow: 0 -2px 8px rgba(0,0,0,0.1);
    z-index: 1000;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--text-light);
    padding: 0.5rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    min-width: 60px;
}

.nav-item i {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
}

.nav-item span {
    font-size: 0.8rem;
    font-weight: 500;
}

.nav-item.active {
    color: var(--primary-blue);
    background: rgba(33, 150, 243, 0.1);
}

.nav-item:hover {
    color: var(--primary-blue);
    transform: translateY(-2px);
}

footer {
    background: var(--text-dark);
    color: white;
    text-align: center;
    padding: 1rem;
    font-size: 0.9rem;
    margin-top: auto;
}

@media (max-width: 768px) {
    .container {
        padding: 0;
    }
    
    main {
        padding: 0.5rem;
    }
    
    .card {
        padding: 1rem;
    }
    
    .welcome-card {
        padding: 1.5rem;
    }
    
    .session-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .suggestion-form {
        flex-direction: column;
    }
    
    #movies-grid {
        grid-template-columns: 1fr;
    }
    
    .mood-filters {
        grid-template-columns: 1fr;
    }
    
    .history-container {
        grid-template-columns: 1fr;
    }
    
    .faq-question {
        padding: 1rem;
        font-size: 1rem;
    }
    
    .faq-answer {
        padding: 0 1rem 1rem;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.2rem;
    }
    
    .welcome-card h2 {
        font-size: 1.5rem;
    }
    
    .primary-btn, .secondary-btn, .danger-btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    
    .bottom-nav {
        padding: 0.5rem 0;
    }
    
    .nav-item i {
        font-size: 1rem;
    }
    
    .nav-item span {
        font-size: 0.7rem;
    }
}

.loading {
    opacity: 0.6;
    pointer-events: none;
}

.error-message {
    background: rgba(244, 67, 54, 0.1);
    color: var(--danger-red);
    padding: 0.75rem;
    border-radius: 8px;
    margin: 0.5rem 0;
    border: 1px solid rgba(244, 67, 54, 0.3);
}

.success-message {
    background: rgba(76, 175, 80, 0.1);
    color: var(--success-green);
    padding: 0.75rem;
    border-radius: 8px;
    margin: 0.5rem 0;
    border: 1px solid rgba(76, 175, 80, 0.3);
}

.pulse {
    animation: pulse 2s infinite;
}

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