:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --dark-bg: #0f172a;
    --card-bg: #1e293b;
    --text-color: #e2e8f0;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --success-color: #10b981;
    --warning-color: #f59e0b;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--dark-bg) 0%, #1e1b4b 100%);
    color: var(--text-color);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 30px 0;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    margin-bottom: 30px;
}

.header-content h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.header-content p {
    font-size: 0.95rem;
    opacity: 0.9;
}

/* Sections */
.section {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.section h2 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.section-desc {
    color: var(--text-muted);
    margin-bottom: 20px;
}

/* Search Box */
.search-box {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.search-box input {
    flex: 1;
    padding: 12px 20px;
    background: var(--dark-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    font-size: 1rem;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.search-box button, button {
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: 8px;
    color: white;
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Movie Grid */
.movie-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.movie-card {
    background: var(--dark-bg);
    border-radius: 10px;
    padding: 20px;
    border: 2px solid var(--border-color);
    transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

.movie-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
}

.movie-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-color);
    min-height: 50px;
}

.movie-genres {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.movie-stats {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.movie-rating {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--warning-color);
}

.movie-count {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.similarity-score {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* Rated Movies */
.rated-movies {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
    min-height: 60px;
}

.rated-movie-chip {
    background: linear-gradient(135deg, var(--success-color), #059669);
    padding: 10px 15px;
    border-radius: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
}

.rated-movie-chip .remove-btn {
    background: rgba(255,255,255,0.2);
    border: none;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    cursor: pointer;
    color: white;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Recommendation Controls */
.recommendation-controls {
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: wrap;
}

.recommendation-controls label {
    font-weight: 600;
}

.recommendation-controls select,
.recommendation-controls input[type="number"] {
    padding: 10px 15px;
    background: var(--dark-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    font-size: 1rem;
}

/* Tabs */
.similarity-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.tab-btn {
    padding: 10px 20px;
    background: var(--dark-bg);
    border: 2px solid var(--border-color);
    color: var(--text-muted);
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-color: var(--primary-color);
    color: white;
}

/* Insights Grid */
.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.insight-card {
    background: var(--dark-bg);
    padding: 20px;
    border-radius: 10px;
    border: 2px solid var(--border-color);
}

.insight-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.insight-card .stat {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.insight-card .stat:last-child {
    border-bottom: none;
}

.insight-card .stat-value {
    font-weight: 600;
    color: var(--success-color);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.7);
}

.modal-content {
    background-color: var(--card-bg);
    margin: 10% auto;
    padding: 30px;
    border: 2px solid var(--primary-color);
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
}

.close {
    color: var(--text-muted);
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.2s;
}

.close:hover {
    color: var(--text-color);
}

.rating-widget {
    text-align: center;
    margin: 30px 0;
}

.stars {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin: 20px 0;
}

.stars i {
    font-size: 2.5rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.2s, transform 0.2s;
}

.stars i:hover,
.stars i.active {
    color: var(--warning-color);
    transform: scale(1.2);
}

.rating-value {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
}

/* Loading State */
.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-muted);
}

.loading::after {
    content: '...';
    animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
    0%, 20% { content: '.'; }
    40% { content: '..'; }
    60%, 100% { content: '...'; }
}

/* Responsive */
@media (max-width: 768px) {
    .header-content h1 {
        font-size: 1.8rem;
    }

    .movie-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }

    .recommendation-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .section {
        padding: 20px;
    }
}