/* --- 0. COLOR VARIABLES (THEME) --- */
:root {
    /* Light Mode Defaults */
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --text-primary: #1e1e1e;
    --text-secondary: #555;
    --accent-color: #E50914; /* Red Accent */
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* Dark Mode Overrides */
.dark-mode {
    --bg-primary: #121212;
    --bg-secondary: #1e1e1e;
    --text-primary: #f5f5f5;
    --text-secondary: #aaaaaa;
    --accent-color: #ff454d; /* Slightly brighter red for dark mode contrast */
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

/* --- 1. GLOBAL STYLES --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

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

a {
    color: var(--text-primary);
    text-decoration: none;
}

/* --- 2. HEADER & NAVIGATION --- */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 40px;
    background-color: var(--bg-secondary);
    box-shadow: var(--card-shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--accent-color);
}
.logo i {
    margin-right: 8px;
}

.main-nav a {
    margin: 0 15px;
    font-weight: 600;
    transition: color 0.2s;
}
.main-nav a:hover {
    color: var(--accent-color);
}

.header-actions button {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 5px;
    transition: color 0.2s;
}
.header-actions button:hover {
    color: var(--accent-color);
}

/* --- 3. SEARCH & FILTERS --- */
.search-filter-section {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    padding: 30px 0 20px 0;
    gap: 15px;
}

.search-bar {
    flex-grow: 1;
    display: flex;
    max-width: 600px;
}

.search-bar input {
    flex-grow: 1;
    padding: 12px 15px;
    border: 1px solid var(--text-secondary);
    border-right: none;
    border-radius: 8px 0 0 8px;
    font-size: 1rem;
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.search-bar button {
    padding: 12px 18px;
    background-color: var(--accent-color);
    color: var(--bg-primary);
    border: none;
    border-radius: 0 8px 8px 0;
    cursor: pointer;
}

.filter-group select {
    padding: 12px 15px;
    border: 1px solid var(--text-secondary);
    border-radius: 8px;
    margin-left: 10px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
}

/* --- 4. CATEGORIES BAR --- */
.categories-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 15px 0 30px 0;
    border-bottom: 1px solid var(--bg-secondary);
}

.category {
    padding: 8px 15px;
    border: 1px solid var(--text-secondary);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: background-color 0.2s, color 0.2s;
    color: var(--text-primary);
}

.category:hover, .category.active {
    background-color: var(--accent-color);
    color: var(--bg-primary);
    border-color: var(--accent-color);
}

/* --- 5. MOVIE GRID & CARDS --- */
.content-section {
    padding-bottom: 40px;
}

.section-title {
    font-size: 2rem;
    font-weight: 800;
    margin: 40px 0 20px;
}

.movie-grid {
    display: grid;
    /* Default: 2 columns on small screens */
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 20px;
}

.movie-card {
    background-color: var(--bg-secondary);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

.movie-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.card-poster {
    position: relative;
    width: 100%;
    /* Aspect Ratio for movie posters (approx 2:3) */
    padding-bottom: 150%; 
    overflow: hidden;
}

.card-poster img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-rating {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: rgba(0, 0, 0, 0.7);
    color: gold;
    padding: 5px 8px;
    border-radius: 5px;
    font-size: 0.9rem;
    font-weight: 600;
}

.card-details {
    padding: 15px;
    text-align: center;
}

.card-details h3 {
    font-size: 1.1rem;
    margin-bottom: 5px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-details p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.direct-link-btn {
    display: block;
    width: 100%;
    padding: 10px;
    background-color: var(--accent-color);
    color: var(--bg-primary);
    border: none;
    border-radius: 5px;
    font-weight: 600;
    transition: background-color 0.2s;
}

.direct-link-btn:hover {
    background-color: #c90810; /* Darker red on hover */
}

/* --- 6. FOOTER --- */
footer {
    text-align: center;
    padding: 20px;
    margin-top: 40px;
    border-top: 1px solid var(--bg-secondary);
    color: var(--text-secondary);
}

/* --- 7. MEDIA QUERIES (RESPONSIVENESS) --- */
/* Tablet (approx 768px) */
@media (min-width: 768px) {
    .movie-grid {
        grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
    }
    .main-header {
        padding: 15px 20px;
    }
    .search-filter-section {
        flex-direction: row;
        gap: 10px;
    }
}

/* Desktop (approx 1024px) */
@media (min-width: 1024px) {
    .movie-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
    .main-nav {
        display: flex; /* Show full nav links on desktop */
    }
}

/* Mobile (Less than 768px) */
@media (max-width: 767px) {
    .main-header {
        padding: 10px 15px;
    }
    .main-nav {
        display: none; /* Hide main links on mobile, use categories bar */
    }
    .search-filter-section {
        flex-direction: column;
        align-items: stretch;
    }
    .search-bar {
        width: 100%;
        max-width: none;
    }
    .filter-group {
        display: flex;
        width: 100%;
        justify-content: space-between;
    }
    .filter-group select {
        flex: 1;
        margin-left: 0;
        margin-right: 10px;
    }
    .movie-grid {
        grid-template-columns: repeat(2, 1fr); /* Two columns on mobile */
        gap: 15px;
    }
    .section-title {
        font-size: 1.5rem;
    }
}