/* ═══════════════════════════════════════════════════════
   Style Gallery — Complete Rewrite
   Prefix: sg-  (style-gallery)
   ═══════════════════════════════════════════════════════ */

/* ── CSS Variables ── */
:root {
    --sg-navy: #1a365d;
    --sg-teal: #2d7d6e;
    --sg-purple: #8b5cf6;
    --sg-bg: #f8fafc;
    --sg-card-bg: #ffffff;
    --sg-text: #1e293b;
    --sg-text-muted: #64748b;
    --sg-border: #e2e8f0;
    --sg-radius: 16px;
    --sg-radius-sm: 10px;
    --sg-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --sg-shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --sg-shadow-lg: 0 10px 30px rgba(0,0,0,0.12);
    --sg-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Page Layout ── */
.sg-page {
    min-height: 100vh;
    background: var(--sg-bg);
}

.sg-container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 2rem 4rem;
}

/* ── Header ── */
.sg-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 2rem;
    background: var(--sg-card-bg);
    border-bottom: 1px solid var(--sg-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.sg-header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.sg-back {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    color: var(--sg-text);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--sg-radius-sm);
    border: 1px solid var(--sg-border);
    background: var(--sg-card-bg);
    transition: all var(--sg-transition);
}

.sg-back:hover {
    background: var(--sg-bg);
    border-color: var(--sg-navy);
    color: var(--sg-navy);
}

.sg-back-arrow {
    font-size: 1.1rem;
    line-height: 1;
}

.sg-logo-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--sg-navy);
}

.sg-logo-title img {
    width: 28px;
    height: 28px;
}

.sg-header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sg-admin-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.9rem;
    border-radius: var(--sg-radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid;
    transition: all var(--sg-transition);
}

.sg-admin-btn--import {
    border-color: var(--sg-navy);
    background: rgba(26, 54, 93, 0.06);
    color: var(--sg-navy);
}

.sg-admin-btn--import:hover {
    background: rgba(26, 54, 93, 0.12);
}

.sg-admin-btn--analyze {
    border-color: var(--sg-purple);
    background: rgba(139, 92, 246, 0.06);
    color: var(--sg-purple);
}

.sg-admin-btn--analyze:hover {
    background: rgba(139, 92, 246, 0.12);
}

/* ── Hero Section ── */
.sg-hero {
    text-align: center;
    padding: 3rem 1rem 2rem;
}

.sg-hero-title {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--sg-navy);
    margin: 0 0 0.75rem;
    letter-spacing: -0.02em;
}

.sg-hero-desc {
    font-size: 1.05rem;
    color: var(--sg-text-muted);
    margin: 0 auto 1.25rem;
    max-width: 600px;
    line-height: 1.6;
}

.sg-disclaimer {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    background: #fffbeb;
    border: 1px solid #fcd34d;
    border-radius: 100px;
    font-size: 0.82rem;
    color: #92400e;
}

/* ── Section Titles ── */
.sg-section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--sg-navy);
    margin: 0 0 0.25rem;
}

.sg-section-desc {
    font-size: 0.95rem;
    color: var(--sg-text-muted);
    margin: 0 0 1.5rem;
}

/* ══════════════════════════════════════════════════════
   Recommended Presets (6 cards, 3-col)
   ══════════════════════════════════════════════════════ */
.sg-rec {
    margin-bottom: 3rem;
}

.sg-rec-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.sg-rec-card {
    background: var(--sg-card-bg);
    border-radius: var(--sg-radius);
    box-shadow: var(--sg-shadow);
    border: 2px solid transparent;
    overflow: hidden;
    transition: all var(--sg-transition);
    display: flex;
    flex-direction: column;
}

.sg-rec-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--sg-shadow-lg);
    border-color: var(--sg-teal);
}

.sg-rec-preview {
    position: relative;
    overflow: hidden;
    background: #f1f5f9;
}

.sg-rec-img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
    cursor: pointer;
    transition: transform var(--sg-transition);
}

.sg-rec-img:hover {
    transform: scale(1.04);
}

.sg-rec-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 4px 14px;
    border-radius: 100px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: white;
    backdrop-filter: blur(6px);
}

.sg-rec-badge--rec {
    background: rgba(45, 125, 110, 0.88);
}

.sg-rec-badge--default {
    background: rgba(139, 92, 246, 0.88);
}

.sg-rec-info {
    padding: 1.25rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.sg-rec-name {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--sg-text);
    margin-bottom: 0.35rem;
}

.sg-color-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.sg-rec-desc {
    margin: 0 0 1rem;
    font-size: 0.85rem;
    color: var(--sg-text-muted);
    line-height: 1.5;
    flex: 1;
}

.sg-rec-btn {
    width: 100%;
}

/* ══════════════════════════════════════════════════════
   Category Filter Tabs
   ══════════════════════════════════════════════════════ */
.sg-tabs {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
    padding: 5px;
    background: #f1f5f9;
    border-radius: var(--sg-radius-sm);
    width: fit-content;
}

.sg-tab {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 600;
    transition: all var(--sg-transition);
    background: transparent;
    color: var(--sg-text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.sg-tab:hover {
    color: var(--sg-text);
    background: rgba(255,255,255,0.6);
}

.sg-tab.active {
    background: var(--sg-navy);
    color: white;
    box-shadow: 0 2px 6px rgba(26, 54, 93, 0.3);
}

.sg-tab-count {
    font-size: 0.7rem;
    padding: 1px 7px;
    border-radius: 100px;
    background: rgba(0, 0, 0, 0.08);
    font-weight: 700;
}

.sg-tab.active .sg-tab-count {
    background: rgba(255, 255, 255, 0.2);
}

/* ══════════════════════════════════════════════════════
   Preset Grid (22 cards)
   ══════════════════════════════════════════════════════ */
.sg-preset-section {
    margin-bottom: 3rem;
}

.sg-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 1.5rem;
}

.sg-card {
    background: var(--sg-card-bg);
    border-radius: var(--sg-radius);
    box-shadow: var(--sg-shadow);
    overflow: hidden;
    transition: all var(--sg-transition);
    border: 1px solid var(--sg-border);
}

.sg-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--sg-shadow-md);
    border-color: var(--sg-teal);
}

.sg-card-slides {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 12px 12px 8px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: #cbd5e1 transparent;
}

.sg-card-slides::-webkit-scrollbar {
    height: 4px;
}

.sg-card-slides::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 2px;
}

.sg-slide-wrap {
    position: relative;
    flex-shrink: 0;
    scroll-snap-align: start;
}

.sg-slide-img {
    width: 260px;
    min-width: 260px;
    aspect-ratio: 16 / 9;
    border-radius: 8px;
    cursor: pointer;
    object-fit: cover;
    border: 2px solid var(--sg-border);
    transition: all var(--sg-transition);
    display: block;
}

.sg-slide-img:hover {
    transform: scale(1.03);
    border-color: var(--sg-teal);
}

.sg-slide-badge {
    position: absolute;
    top: 6px;
    left: 6px;
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 0.68rem;
    font-weight: 700;
    backdrop-filter: blur(4px);
    color: white;
}

.sg-slide-badge--title {
    background: rgba(26, 54, 93, 0.85);
}

.sg-slide-badge--body {
    background: rgba(45, 125, 110, 0.85);
}

.sg-card-info {
    padding: 12px 16px 16px;
}

.sg-card-name {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 6px;
    font-size: 1rem;
    font-weight: 700;
    color: var(--sg-text);
}

.sg-card-name .sg-rec-inline-badge {
    font-size: 0.65rem;
    padding: 2px 8px;
    border-radius: 100px;
    background: var(--sg-teal);
    color: white;
    font-weight: 700;
}

.sg-card-desc {
    margin: 0 0 6px;
    font-size: 0.82rem;
    color: var(--sg-text-muted);
    line-height: 1.45;
}

.sg-slide-count {
    font-size: 0.78rem;
    color: #94a3b8;
    margin-bottom: 10px;
}

.sg-no-sample {
    width: 100%;
    aspect-ratio: 16 / 9;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f1f5f9;
    border-radius: 8px;
    color: #94a3b8;
    font-size: 0.85rem;
    margin: 12px;
    flex-direction: column;
    gap: 0.5rem;
}

.sg-no-sample-icon {
    font-size: 1.5rem;
}

/* ══════════════════════════════════════════════════════
   Image Modal
   ══════════════════════════════════════════════════════ */
.sg-modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(0, 0, 0, 0.95);
    overflow: hidden;
    animation: sgFadeIn 0.3s ease;
}

@keyframes sgFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.sg-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.sg-modal-content {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #1a1a1a;
    border-radius: 12px;
    box-shadow: 0 25px 80px rgba(0,0,0,0.5);
    overflow: hidden;
    transition: width 0.2s ease, height 0.2s ease;
}

.sg-modal-content img {
    display: block;
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    transition: opacity 0.3s ease;
    cursor: zoom-in;
}

.sg-modal-content img.zoomed {
    cursor: zoom-out;
    max-width: none;
    max-height: none;
    object-fit: none;
}

.sg-modal-loading {
    position: absolute;
    color: white;
    font-size: 1.1rem;
    display: none;
    background: rgba(0,0,0,0.7);
    padding: 14px 22px;
    border-radius: var(--sg-radius-sm);
}

.sg-modal-loading.active {
    display: block;
}

.sg-modal-close {
    position: fixed;
    top: 18px;
    right: 24px;
    color: white;
    font-size: 32px;
    cursor: pointer;
    z-index: 10001;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    transition: all var(--sg-transition);
    line-height: 1;
    border: none;
}

.sg-modal-close:hover {
    background: rgba(255,255,255,0.25);
    transform: scale(1.1);
}

.sg-modal-nav {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10002;
    background: rgba(255,255,255,0.12);
    border: none;
    color: white;
    font-size: 2.5rem;
    padding: 14px 10px;
    cursor: pointer;
    border-radius: var(--sg-radius-sm);
    backdrop-filter: blur(4px);
    transition: background var(--sg-transition);
}

.sg-modal-nav:hover {
    background: rgba(255,255,255,0.28);
}

.sg-modal-nav--prev { left: 14px; }
.sg-modal-nav--next { right: 14px; }

.sg-modal-counter {
    position: fixed;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10002;
    color: white;
    background: rgba(0,0,0,0.55);
    padding: 5px 14px;
    border-radius: 100px;
    font-size: 0.82rem;
    font-weight: 600;
}

.sg-modal-info-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 10px 80px;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(8px);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 0.85rem;
    z-index: 10003;
}

.sg-modal-preset-name {
    font-weight: 700;
}

.sg-modal-slide-type {
    padding: 2px 10px;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 700;
}

.sg-modal-slide-type--title {
    background: rgba(26, 54, 93, 0.8);
}

.sg-modal-slide-type--body {
    background: rgba(45, 125, 110, 0.8);
}

.sg-modal-thumbs {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 10003;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(8px);
    padding: 10px 20px;
    display: flex;
    justify-content: center;
    gap: 8px;
    overflow-x: auto;
}

.sg-modal-thumbs img {
    width: 72px;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: 4px;
    border: 2px solid transparent;
    cursor: pointer;
    opacity: 0.45;
    transition: all var(--sg-transition);
}

.sg-modal-thumbs img:hover {
    opacity: 0.75;
}

.sg-modal-thumbs img.active {
    opacity: 1;
    border-color: var(--sg-teal);
}

/* ══════════════════════════════════════════════════════
   Dialog Modals (PPTX Import, PDF Analysis)
   ══════════════════════════════════════════════════════ */
.sg-dialog-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
    justify-content: center;
    align-items: center;
    overflow-y: auto;
}

.sg-dialog-overlay.active {
    display: flex;
}

.sg-dialog {
    background: var(--sg-card-bg);
    border-radius: var(--sg-radius);
    padding: 2rem;
    max-width: 480px;
    width: 90%;
    box-shadow: var(--sg-shadow-lg);
    margin: 20px auto;
    max-height: 90vh;
    overflow-y: auto;
}

.sg-dialog--wide {
    max-width: 600px;
}

.sg-dialog-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
}

.sg-dialog-title {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--sg-text);
}

.sg-dialog-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--sg-text-muted);
    padding: 0;
    line-height: 1;
    transition: color var(--sg-transition);
}

.sg-dialog-close:hover {
    color: var(--sg-text);
}

.sg-dialog-desc {
    font-size: 0.82rem;
    color: var(--sg-text-muted);
    margin-bottom: 1.25rem;
    line-height: 1.5;
}

.sg-dialog-label {
    font-size: 0.82rem;
    font-weight: 600;
    display: block;
    margin-bottom: 0.3rem;
    color: var(--sg-text);
}

.sg-dialog-input {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--sg-border);
    border-radius: var(--sg-radius-sm);
    font-size: 0.85rem;
    box-sizing: border-box;
    transition: border-color var(--sg-transition);
}

.sg-dialog-input:focus {
    outline: none;
    border-color: var(--sg-navy);
}

.sg-dialog-submit {
    width: 100%;
    padding: 0.75rem;
    border: none;
    border-radius: var(--sg-radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity var(--sg-transition);
}

.sg-dialog-submit:hover {
    opacity: 0.9;
}

.sg-dialog-submit--primary {
    background: var(--sg-navy);
    color: white;
}

.sg-dialog-submit--purple {
    background: var(--sg-purple);
    color: white;
}

.sg-dialog-result {
    display: none;
    margin: 0.75rem 0;
    padding: 0.75rem;
    border-radius: var(--sg-radius-sm);
    font-size: 0.82rem;
}

.sg-dialog-result--success {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    color: #059669;
}

.sg-dialog-result--error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #dc2626;
}

/* PDF Analysis specific */
.sg-pdf-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--sg-border);
    border-top-color: var(--sg-purple);
    border-radius: 50%;
    animation: sgSpin 0.8s linear infinite;
    margin: 0 auto 1rem;
}

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

/* ══════════════════════════════════════════════════════
   Buttons (shared)
   ══════════════════════════════════════════════════════ */
.sg-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.65rem 1.25rem;
    border: none;
    border-radius: var(--sg-radius-sm);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--sg-transition);
    text-decoration: none;
}

.sg-btn--primary {
    background: var(--sg-navy);
    color: white;
}

.sg-btn--primary:hover {
    background: #1e3a5f;
    box-shadow: 0 2px 8px rgba(26, 54, 93, 0.3);
}

.sg-btn--teal {
    background: var(--sg-teal);
    color: white;
}

.sg-btn--teal:hover {
    background: #256b5e;
}

.sg-btn--block {
    width: 100%;
}

/* ══════════════════════════════════════════════════════
   Accessibility
   ══════════════════════════════════════════════════════ */
.sg-rec-card:focus-within,
.sg-card:focus-within {
    outline: 3px solid var(--sg-teal);
    outline-offset: 2px;
}

.sg-tab:focus-visible,
.sg-back:focus-visible,
.sg-modal-close:focus-visible,
.sg-modal-nav:focus-visible {
    outline: 3px solid var(--sg-teal);
    outline-offset: 2px;
}

/* ══════════════════════════════════════════════════════
   Responsive
   ══════════════════════════════════════════════════════ */
@media (max-width: 1200px) {
    .sg-rec-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1024px) {
    .sg-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    .sg-container {
        padding: 0 1rem 3rem;
    }

    .sg-header {
        flex-direction: column;
        gap: 0.75rem;
        padding: 1rem;
        position: static;
    }

    .sg-header-actions {
        width: 100%;
        justify-content: center;
    }

    .sg-hero {
        padding: 2rem 0.5rem 1.5rem;
    }

    .sg-hero-title {
        font-size: 1.65rem;
    }

    .sg-hero-desc {
        font-size: 0.95rem;
    }

    .sg-rec-grid {
        grid-template-columns: 1fr;
    }

    .sg-grid {
        grid-template-columns: 1fr;
    }

    .sg-slide-img {
        width: 200px;
        min-width: 200px;
    }

    .sg-tabs {
        width: 100%;
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
    }

    .sg-modal-content {
        border-radius: 8px;
    }

    .sg-modal-close {
        top: 10px;
        right: 10px;
        width: 42px;
        height: 42px;
        font-size: 26px;
    }

    .sg-modal-nav {
        padding: 10px 6px;
        font-size: 2rem;
    }

    .sg-modal-nav--prev { left: 4px; }
    .sg-modal-nav--next { right: 4px; }

    .sg-modal-info-bar {
        padding: 8px 50px;
        font-size: 0.75rem;
    }

    .sg-modal-thumbs img {
        width: 56px;
    }

    .sg-modal-counter {
        bottom: 72px;
    }

    .sg-dialog {
        padding: 1.5rem;
        width: 95%;
    }
}

@media (max-width: 480px) {
    .sg-hero-title {
        font-size: 1.35rem;
    }

    .sg-section-title {
        font-size: 1.25rem;
    }

    .sg-disclaimer {
        font-size: 0.75rem;
        padding: 0.5rem 0.75rem;
    }

    .sg-slide-img {
        width: 180px;
        min-width: 180px;
    }
}