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

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #f59e0b;
    --accent-color: #ef4444;
    --bg-dark: #0f172a;
    --bg-dark-secondary: #1e293b;
    --bg-dark-tertiary: #334155;
    --text-light: #f8fafc;
    --text-gray: #94a3b8;
    --text-dark: #1e293b;
    --border-color: #475569;
    --gradient-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --shadow-light: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

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

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

.nav-link {
    color: var(--text-gray);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: 8px 16px;
    border-radius: 8px;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-light);
    background: rgba(99, 102, 241, 0.1);
}

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

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-light);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-bg);
    z-index: -2;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(99, 102, 241, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(245, 158, 11, 0.2) 0%, transparent 50%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    animation: float 20s ease-in-out infinite;
}

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

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.7);
    z-index: -1;
}

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

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-light), var(--primary-color));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-gray);
    margin-bottom: 3rem;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-search {
    animation: fadeInUp 1s ease-out 0.4s both;
}

.search-hint {
    margin-top: 12px;
    color: var(--text-gray);
    font-size: 0.9rem;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    opacity: 0.8;
}

.search-hint i {
    color: var(--secondary-color);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Search Components */
.search-container {
    position: relative;
    display: flex;
    max-width: 600px;
    margin: 0 auto;
}

.search-input {
    flex: 1;
    padding: 16px 20px;
    font-size: 1.1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    background: rgba(30, 41, 59, 0.8);
    color: var(--text-light);
    backdrop-filter: blur(10px);
    transition: var(--transition);
    outline: none;
}

.search-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.search-input::placeholder {
    color: var(--text-gray);
}

.search-btn {
    padding: 16px 24px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1.1rem;
}

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

.search-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 60px;
    background: var(--bg-dark-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    max-height: 300px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-heavy);
}

.search-dropdown.show {
    display: block;
}

.dropdown-item {
    padding: 12px 20px;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 1px solid rgba(71, 85, 105, 0.3);
    font-size: 0.95rem;
}

.dropdown-item:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
}

.dropdown-item:last-child {
    border-bottom: none;
}

/* Enhanced dropdown styles */
.dropdown-item.show-all,
.dropdown-item.browse-all {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    font-weight: 500;
    border-left: 3px solid var(--primary-color);
}

.dropdown-item.show-all:hover,
.dropdown-item.browse-all:hover {
    background: rgba(99, 102, 241, 0.2);
    transform: translateX(2px);
}

.dropdown-item.no-results {
    color: var(--text-gray);
    font-style: italic;
    cursor: default;
}

.dropdown-item.no-results:hover {
    background: transparent;
    color: var(--text-gray);
}

.dropdown-divider {
    padding: 8px 20px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-gray);
    background: rgba(71, 85, 105, 0.2);
    border-bottom: 1px solid rgba(71, 85, 105, 0.3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Movie list modal styles */
.movie-list-modal {
    padding: 20px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
}

.movie-list-modal h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.movie-search-modal {
    margin-bottom: 20px;
}

.movie-search-modal .search-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-dark-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-light);
    font-size: 1rem;
}

.movie-list-container {
    flex: 1;
    overflow-y: auto;
    max-height: 400px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-dark-tertiary);
}

.movie-list-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 1px solid rgba(71, 85, 105, 0.3);
}

.movie-list-item:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    transform: translateX(4px);
}

.movie-list-item:last-child {
    border-bottom: none;
}

.movie-list-item i {
    color: var(--primary-color);
    font-size: 1.1rem;
}

.movie-list-item span {
    flex: 1;
    font-weight: 500;
}

/* Sections */
.search-results-section,
.recommendations-section,
.trending-section {
    padding: 100px 0;
}

.recommendations-section {
    min-height: auto;
}

.trending-section {
    min-height: 100vh;
}

.recommendations-results {
    margin-top: 2rem;
    transition: var(--transition);
}

.recommendations-results:empty {
    margin-top: 0;
    display: none !important;
}

.search-results-section {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(30, 41, 59, 0.95) 100%);
    backdrop-filter: blur(10px);
}

.search-results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.search-results-header-info h3 {
    color: var(--text-light);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.clear-search-btn {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.clear-search-btn:hover {
    background: #dc2626;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, var(--text-light), var(--primary-color));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.search-form,
.recommendation-form {
    max-width: 800px;
    margin: 0 auto 4rem;
}

.form-group {
    margin-bottom: 2rem;
}

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

.select-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-dark-secondary);
    color: var(--text-light);
    font-size: 1rem;
    transition: var(--transition);
    outline: none;
}

.select-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Movie Grid */
.movie-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.movie-card {
    background: var(--bg-dark-secondary);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid var(--border-color);
    position: relative;
}

.movie-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-heavy);
    border-color: var(--primary-color);
}

.movie-poster {
    width: 100%;
    height: 400px;
    object-fit: cover;
    transition: var(--transition);
}

.movie-card:hover .movie-poster {
    transform: scale(1.05);
}

.movie-info {
    padding: 1.5rem;
}

.movie-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-light);
    line-height: 1.4;
}

.movie-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.rating-stars {
    color: var(--secondary-color);
}

.rating-value {
    font-weight: 600;
    color: var(--text-light);
}

.movie-overview {
    color: var(--text-gray);
    font-size: 0.9rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.similarity-score {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(99, 102, 241, 0.9);
    color: white;
    padding: 4px 8px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.no-poster {
    background: var(--bg-dark-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-gray);
    font-size: 3rem;
}

/* Section Tabs */
.section-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.tab-btn {
    padding: 12px 24px;
    border: 2px solid var(--border-color);
    background: transparent;
    color: var(--text-gray);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    font-size: 1rem;
}

.tab-btn.active,
.tab-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

/* Loading Spinner */
.loading-spinner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.loading-spinner.show {
    display: flex;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    padding: 20px;
    backdrop-filter: blur(5px);
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--bg-dark-secondary);
    border-radius: var(--border-radius);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-heavy);
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 2rem;
    color: var(--text-gray);
    cursor: pointer;
    z-index: 1;
    transition: var(--transition);
}

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

.modal-body {
    padding: 2rem;
}

.modal-movie-poster {
    width: 100%;
    max-width: 300px;
    height: auto;
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
}

.modal-movie-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.modal-movie-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.modal-movie-overview {
    color: var(--text-gray);
    line-height: 1.6;
    font-size: 1rem;
}

/* Error States */
.error-message {
    text-align: center;
    padding: 3rem;
    color: var(--text-gray);
    font-size: 1.1rem;
}

.error-message i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.suggestions {
    margin-top: 2rem;
}

.suggestions h3 {
    margin-bottom: 1rem;
    color: var(--text-light);
}

/* Footer */
.footer {
    background: var(--bg-dark-secondary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

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

.footer-section h3 {
    color: var(--text-light);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    color: var(--text-gray);
    margin-bottom: 0.5rem;
    transition: var(--transition);
}

.footer-section ul li:hover {
    color: var(--primary-color);
    cursor: pointer;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.footer-section p {
    color: var(--text-gray);
    line-height: 1.6;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-gray);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .movie-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1.5rem;
    }
    
    .search-container {
        flex-direction: column;
    }
    
    .search-input {
        border-radius: var(--border-radius) var(--border-radius) 0 0;
    }
    
    .search-btn {
        border-radius: 0 0 var(--border-radius) var(--border-radius);
    }
    
    .search-dropdown {
        right: 0;
    }
    
    .section-tabs {
        flex-direction: column;
        align-items: center;
    }
    
    .tab-btn {
        width: 200px;
    }
    
    .container {
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    .movie-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 1rem;
    }
    
    .movie-poster {
        height: 300px;
    }
    
    .movie-info {
        padding: 1rem;
    }
    
    .hero-content {
        padding: 0 1rem;
    }
    
    .modal-content {
        margin: 10px;
        width: calc(100% - 20px);
    }
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}