:root {
    /* Theme Config - Dark (Default) */
    --bg-dark: url("https://gpsite.github.io/gpmedia/img/catalog/darkcatalog.png");
    --bg-light: url("https://gpsite.github.io/gpmedia/img/catalog/lightcatalog.png");

    --glass: rgba(20, 20, 20, 0.6);
    --glass-strong: rgba(20, 20, 20, 0.9);
    --glass-border: rgba(255, 255, 255, 0.12);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.6);
    --accent: #8b5cf6;
    /* Purple for AI */
    --accent-glow: rgba(139, 92, 246, 0.4);

    --pill-bg: rgba(255, 255, 255, 0.08);
    --pill-hover: rgba(255, 255, 255, 0.15);

    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.3);

    --transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
    --header-padding: clamp(15px, 2.5vw, 40px);
}

[data-theme="light"] {
    --glass: rgba(255, 255, 255, 0.75);
    --glass-strong: rgba(255, 255, 255, 0.95);
    --glass-border: rgba(0, 0, 0, 0.06);
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --accent: #7c3aed;
    --accent-glow: rgba(124, 58, 237, 0.2);
    --pill-bg: rgba(0, 0, 0, 0.04);
    --pill-hover: rgba(0, 0, 0, 0.08);
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: 'Outfit', sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-color: #000;
    color: var(--text-primary);
    overflow-x: hidden;
}

/* Dynamic Background Layer */
.bg-layer {
    position: fixed;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: -2;
    transition: background-image 0.8s ease;
    filter: saturate(40%);
}

[data-theme="dark"] .bg-layer {
    background-image: var(--bg-dark);
}

[data-theme="light"] .bg-layer {
    background-image: var(--bg-light);
    filter: brightness(1.02);
}

/* --- HEADER (Pill) --- */
header {
    width: 100%;
    padding: var(--header-padding);
    padding-bottom: 20px;
    display: flex;
    justify-content: center;
    z-index: 100;
    position: fixed;
    top: 0;
}

.nav-pill {
    display: flex;
    align-items: center;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    padding: 6px;
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow-lg);
    gap: 8px;
}

@media (max-width: 768px) {
    .nav-pill {
        flex-direction: column;
        border-radius: 20px;
    }
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    border-radius: 100px;
    transition: var(--transition);
    white-space: nowrap;
    cursor: pointer;
}

.nav-item:hover {
    background: var(--pill-hover);
}

/* Filter Dropdowns in Header */
.filter-group {
    position: relative;
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: 6px;
}

.filter-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: var(--glass-strong);
    border: 1px solid var(--glass-border);
    padding: 8px;
    border-radius: 12px;
    display: none;
    flex-direction: column;
    gap: 4px;
    min-width: 160px;
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-lg);
    max-height: 400px;
    overflow-y: auto;
}

.filter-menu.active {
    display: flex;
}

.filter-option {
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition);
}

.filter-option:hover,
.filter-option.active {
    background: var(--pill-hover);
    color: var(--text-primary);
}

/* --- MAIN GRID --- */
main {
    width: 100%;
    max-width: 1400px;
    margin: 100px auto 40px;
    padding: 0 var(--header-padding);
    z-index: 10;
}

.ai-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.ai-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    backdrop-filter: blur(10px);
    height: fit-content;
}

.ai-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
    border-color: var(--accent);
    z-index: 5;
}

.card-image-wrapper {
    width: 100%;
    height: 160px;
    overflow: hidden;
    position: relative;
    background: rgba(0, 0, 0, 0.2);
}

.card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.ai-card:hover .card-image {
    transform: scale(1.05);
}

.card-content {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.img-gen-badge {
    font-size: 0.75rem;
    background: var(--accent);
    color: #fff;
    padding: 4px 10px;
    border-radius: 100px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
}

.card-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* --- EXPANDABLE MODELS CHECK --- */
.card-models-container {
    background: var(--pill-bg);
    border-radius: 12px;
    padding: 10px;
    margin-top: auto;
    transition: all 0.3s ease;
}

.model-summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.expand-btn {
    font-size: 0.75rem;
    color: var(--accent);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 700;
    padding: 4px;
}

.expand-btn:hover {
    color: var(--text-primary);
}

.model-list-expanded {
    margin-top: 0;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.model-list-expanded.active {
    margin-top: 10px;
    max-height: 300px;
    opacity: 1;
    overflow-y: auto;
}

.model-tag {
    font-size: 0.85rem;
    color: var(--text-primary);
    padding: 4px 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
}

/* --- IFRAME OVERLAY --- */
.ai-overlay {
    position: fixed;
    inset: 0;
    background: #000;
    z-index: 2000;
    display: none;
    flex-direction: column;
}

.ai-overlay.active {
    display: flex;
}

.overlay-nav {
    height: 60px;
    background: rgba(20, 20, 20, 0.95);
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 2010;
}

.overlay-title {
    font-weight: 700;
    font-size: 1.1rem;
}

.close-pill {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    padding: 8px 20px;
    border-radius: 100px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
}

.close-pill:hover {
    background: rgba(255, 255, 255, 0.2);
}

.iframe-container {
    flex: 1;
    width: 100%;
    height: 100%;
    position: relative;
}

iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* --- OVERLAY LOADER (George Pickens Style) --- */
.overlay-loader {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #000;
    z-index: 5;
    /* Above iframe until loaded */
    transition: opacity 0.5s ease;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loader-text {
    color: #fff;
    font-size: 14px;
    letter-spacing: 1px;
    text-transform: uppercase;
    opacity: 0.8;
    font-weight: 500;
}