/* Custom CSS for Gallery Portal - Dark Theme Premium Glassmorphism */
:root {
    --bg-dark: #07090e;
    --bg-card: rgba(255, 255, 255, 0.03);
    --border-card: rgba(255, 255, 255, 0.08);
    --primary: #6c5dd3;
    --primary-hover: #5a4db8;
    --accent: #00f2fe;
    --text-white: #ffffff;
    --text-muted: #858997;
    --text-light: #b5b9c4;
    --sidebar-w: 280px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    background-color: var(--bg-dark);
    color: var(--text-light);
    font-family: 'Outfit', 'Noto Sans TC', sans-serif;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

/* Header */
.gallery-header {
    background: rgba(7, 9, 14, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-card);
    z-index: 1030;
}
.brand-title {
    background: linear-gradient(135deg, var(--text-white) 30%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
}

/* Layout */
.gallery-wrapper {
    display: flex;
    margin-top: 76px;
    min-height: calc(100vh - 76px);
}

/* Sidebar Filters */
.gallery-sidebar {
    width: var(--sidebar-w);
    border-right: 1px solid var(--border-card);
    background: rgba(7, 9, 14, 0.95);
    padding: 2rem 1.5rem;
    height: calc(100vh - 76px);
    position: fixed;
    overflow-y: auto;
    transition: var(--transition);
    z-index: 1020;
}

.gallery-content {
    flex: 1;
    margin-left: var(--sidebar-w);
    padding: 2rem 3rem;
    transition: var(--transition);
}

/* Filter Headings */
.filter-title {
    color: var(--text-white);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-card);
    padding-bottom: 0.5rem;
}

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

/* Checkbox and Radio styling */
.form-check {
    padding-left: 1.8em;
    margin-bottom: 0.5rem;
}
.form-check-input {
    background-color: transparent;
    border-color: rgba(255, 255, 255, 0.2);
    cursor: pointer;
}
.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}
.form-check-label {
    color: var(--text-light);
    cursor: pointer;
    font-size: 0.95rem;
    transition: var(--transition);
}
.form-check-label:hover {
    color: var(--text-white);
}

/* Cards Grid */
.template-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: 16px;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}
.template-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: 0 12px 30px rgba(108, 93, 211, 0.15);
}

.template-img-wrapper {
    position: relative;
    aspect-ratio: 1440 / 960;
    background: #141722;
    overflow: hidden;
}
.template-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    transition: var(--transition);
}
.template-card:hover .template-img {
    transform: scale(1.05);
}

.template-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(7, 9, 14, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
    gap: 0.75rem;
}
.template-img-wrapper:hover .template-overlay {
    opacity: 1;
}

.template-body {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.template-name {
    color: var(--text-white);
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.template-meta {
    font-size: 0.85rem;
    margin-bottom: 1rem;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.meta-badge {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-card);
    color: var(--accent);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.75rem;
}
.meta-badge.bg-tone {
    color: #ffd000;
}

.template-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1.5rem;
}
.tag-badge {
    background: rgba(108, 93, 211, 0.1);
    color: #a39cf4;
    border: 1px solid rgba(108, 93, 211, 0.2);
    font-size: 0.75rem;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
}

.template-features {
    border-top: 1px solid var(--border-card);
    padding-top: 1rem;
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-light);
}
.template-features .text-muted {
    color: #9ea2ae !important;
}
.feature-indicator {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}
.feature-indicator.active {
    color: var(--accent);
}

/* Card description — bright enough to read on dark background */
.text-card-desc {
    color: #c8ccd6 !important;
    line-height: 1.65;
}

/* Detail View Styles */
.detail-container {
    max-width: 1200px;
    margin: 100px auto 40px;
    padding: 0 2rem;
}
.detail-back-btn {
    color: var(--text-light);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    transition: var(--transition);
}
.detail-back-btn:hover {
    color: var(--accent);
}
.detail-img-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}
.detail-main-img {
    width: 100%;
    object-fit: cover;
    object-position: top;
    max-height: 700px;
}
.detail-info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: 24px;
    padding: 2.5rem;
    height: 100%;
}

.list-pages-item {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-card);
    color: var(--text-light);
    border-radius: 8px;
    margin-bottom: 0.5rem;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.list-pages-item i {
    color: var(--accent);
}

/* Buttons styling */
.btn-premium {
    background: linear-gradient(135deg, var(--primary) 0%, #8c7ae6 100%);
    color: var(--text-white);
    border: none;
    font-weight: 600;
    transition: var(--transition);
}
.btn-premium:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(108, 93, 211, 0.4);
    color: var(--text-white);
}

.btn-glass {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-white);
    border: 1px solid var(--border-card);
    font-weight: 600;
    transition: var(--transition);
}
.btn-glass:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--text-white);
}

/* Utility: accent text color */
.text-accent {
    color: var(--accent) !important;
}

/* ============================================================
   RWD Adjustments — Mobile First
   ============================================================ */

/* Sidebar overlay backdrop (mobile) */
.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1019;
    backdrop-filter: blur(2px);
}
.sidebar-backdrop.show {
    display: block;
}

/* ── Large (≥992px) ── */
@media (min-width: 992px) {
    .gallery-wrapper {
        margin-top: 68px;
        min-height: calc(100vh - 68px);
    }
    .gallery-sidebar {
        top: 68px;
        height: calc(100vh - 68px);
    }
}

/* ── Tablet & Mobile (<992px) ── */
@media (max-width: 991.98px) {
    /* Collapse sidebar off-screen */
    .gallery-sidebar {
        transform: translateX(-100%);
        box-shadow: 10px 0 30px rgba(0, 0, 0, 0.5);
        top: 0;
        height: 100vh;
        z-index: 1025;
    }
    .gallery-sidebar.show {
        transform: translateX(0);
    }

    /* Content spans full width */
    .gallery-content {
        margin-left: 0;
        padding: 1.5rem 1.25rem;
    }

    /* Header adjusts to compact height */
    .gallery-wrapper {
        margin-top: 58px;
        min-height: calc(100vh - 58px);
    }

    /* Detail page: reduce outer padding */
    .detail-container {
        padding: 0 1rem;
        margin-top: 80px;
    }

    /* Detail info card: reduce inner padding */
    .detail-info-card {
        padding: 1.5rem;
    }

    /* Stack image above info card on mobile */
    .detail-img-card {
        border-radius: 16px;
    }
    .detail-main-img {
        max-height: 500px;
    }

    /* Hero banner compact */
    .gallery-content .py-5 {
        padding-top: 2rem !important;
        padding-bottom: 2rem !important;
    }
}

/* ── Small Mobile (<576px) ── */
@media (max-width: 575.98px) {
    /* Brand title slightly smaller */
    .brand-title {
        font-size: 1rem !important;
    }

    /* Content even tighter */
    .gallery-content {
        padding: 1rem 0.875rem;
    }

    /* Detail container flush */
    .detail-container {
        padding: 0 0.75rem;
        margin-top: 72px;
    }

    /* Detail info card minimal padding */
    .detail-info-card {
        padding: 1.25rem;
        border-radius: 16px;
    }

    /* Template card body padding */
    .template-body {
        padding: 1rem;
    }

    /* Stacked buttons full-width feel */
    .d-grid .btn {
        font-size: 0.95rem;
        padding: 0.7rem 1rem;
    }

    /* Feature indicators wrap */
    .template-features {
        flex-wrap: wrap;
        gap: 0.4rem;
    }

    /* List pages item padding */
    .list-pages-item {
        padding: 0.5rem 0.75rem;
    }

    /* Badge row wraps */
    .d-flex.gap-2.mb-4 {
        flex-wrap: wrap;
    }
}

/* ── Very Small (<400px) ── */
@media (max-width: 399px) {
    .detail-main-img {
        max-height: 240px;
    }
    .gallery-sidebar {
        width: min(280px, 90vw);
    }
}