/* Custom Dark Blue Theme from the image */
:root {
    --color-primary-dark: #121820;
    /* Main Content Background */
    --color-secondary-dark: #1F2833;
    /* Header Background */
    --color-search-input: #313A46;
    /* Search Input Background */
    --color-accent: #3b82f6;
    /* Blue accent */
}

body {
    /* Updated to Poppins */
    font-family: 'Poppins', sans-serif;
    background-color: var(--color-primary-dark);
    color: #E5E7EB;
    /* Light grey text */
}

/* PERFORMANCE: Content Visibility for massive lists */
/* This ensures off-screen cards are skipped during rendering */
.movie-card {
    content-visibility: auto;
    contain-intrinsic-size: 0 350px;
    /* Estimated height to prevent scroll jump */
}

/* Custom card focus effect */
/* .movie-card:hover .title {
    color: var(--color-accent);
} */

/* GLASSMORPHISM HEADER BACKGROUND */
.app-header {
    /* Semi-transparent background */
    background-color: rgba(31, 40, 51, 0.85);
    /* Blur effect */
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    /* Subtle border */
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* Glass Style for Mobile Menu */
.glass-menu {
    background-color: rgba(31, 40, 51, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* Style search input */
.search-input {
    background-color: var(--color-search-input);
    height: 40px;
    /* Adjust height for alignment */
}

/* Responsive Grid: 2 columns on mobile, 4 on tablet, 6 on desktop */
.movie-grid {
    display: grid;
    gap: 0.75rem;
    /* Increased slightly to 12px for better spacing */
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

@media (min-width: 640px) {

    /* sm */
    .movie-grid {
        /* gap override removed to match mobile */
        grid-template-columns: repeat(4, minmax(0, 1fr));
        row-gap: 2rem;
    }
}

@media (min-width: 1025px) {

    /* lg */
    .movie-grid {
        grid-template-columns: repeat(6, minmax(0, 1fr));
        row-gap: 4rem;
    }
}

/* --- MODERN NAVBAR ANIMATIONS --- */

/* Top Level Link Animation: Underline expands from center */
.nav-link-animated {
    position: relative;
    font-weight: 700;
    /* Bold text */
    color: #E5E7EB;
    transition: color 0.3s ease;
}

.nav-link-animated:hover {
    color: var(--color-accent);
}

.nav-link-animated::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 50%;
    background-color: var(--color-accent);
    transition: all 0.3s ease-in-out;
    transform: translateX(-50%);
}

.nav-link-animated:hover::after {
    width: 100%;
}

/* Dropdown Item Animation: Slide right with left border */
.dropdown-item-animated {
    position: relative;
    transition: all 0.2s ease-in-out;
    border-left: 3px solid transparent;
    font-weight: 600;
}

.dropdown-item-animated:hover {
    background-color: rgba(59, 130, 246, 0.1);
    /* Subtle blue tint */
    padding-left: 1.5rem;
    /* Slide right */
    border-left-color: var(--color-accent);
    color: var(--color-accent);
}

/* --- HAMBURGER MENU ANIMATION --- */
.hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    margin: 3px auto;
    background-color: #E5E7EB;
    /* Light grey */
    transition: all 0.3s ease-in-out;
    transform-origin: center;
}

#menu-toggle.open .hamburger-line:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

#menu-toggle.open .hamburger-line:nth-child(2) {
    opacity: 0;
}

#menu-toggle.open .hamburger-line:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* --- SLIDER STYLES --- */
#hero-slider {
    position: relative;
    width: 100%;
    height: 50vh;
    /* Takes up 50% of viewport height */
    min-height: 450px;
    overflow: hidden;
    display: none;
    /* Hidden by default, shown via JS */
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    background-size: cover;
    background-position: center;
}

.slide.active {
    opacity: 1;
    z-index: 10;
}

/* Blur backdrop effect for posters used as wide backgrounds */
.slide-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    /* Reduced blur further to 2px */
    filter: blur(2px) brightness(0.4);
    transform: scale(1.1);
    /* Prevent blurred edges */
}

/* Gradient overlay for text readability */
.slide-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(18, 24, 32, 0.95) 0%, rgba(18, 24, 32, 0.7) 40%, rgba(18, 24, 32, 0.2) 100%);
    display: flex;
    align-items: center;
}

.slide-content {
    padding-left: 5%;
    max-width: 600px;
    z-index: 20;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s ease-out 0.3s;
    /* Delayed animation */
}

.slide.active .slide-content {
    opacity: 1;
    transform: translateY(0);
}

.slider-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 30;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s;
}

.slider-dot.active {
    background-color: var(--color-accent);
    transform: scale(1.2);
}

/* MODAL STYLES */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.9);
    /* Dark backdrop */
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    /* Ensure it sits on top of everything */
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background-color: #000;
    width: 90%;
    max-width: 900px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
    border: 1px solid #333;
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    /* 16:9 Aspect Ratio */
    height: 0;
    background: #000;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* --- PRELOADER STYLES --- */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-primary-dark);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease-out, visibility 0.5s ease-out;
}

#preloader.hidden-loader {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.spinner {
    width: 80px;
    height: 80px;
    border: 4px solid rgba(59, 130, 246, 0.3);
    border-top: 4px solid var(--color-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loader-logo {
    position: absolute;
    color: var(--color-accent);
    animation: pulse 2s infinite;
}

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

    100% {
        transform: rotate(360deg);
    }
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}