/* ═══════════════════════════════════════════
   PromptMaster — Dark Theme
   Colors: #0a0a0a canvas, #161616 card, #e8e8e8 text
   Accent: #f59e0b (amber)
   ═══════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg: #0a0a0a;
    --card: #161616;
    --card-hover: #1e1e1e;
    --border: rgba(255,255,255,0.06);
    --text: #e8e8e8;
    --text-muted: #8a8a8a;
    --text-dim: #555;
    --accent: #f59e0b;
    --accent-hover: #d97706;
    --radius: 8px;
    --radius-sm: 6px;
    --font: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --mono: 'D2Coding', 'Fira Code', 'Consolas', monospace;
}

html { font-size: 16px; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--text); text-decoration: none; }
img { display: block; max-width: 100%; }
button { cursor: pointer; font-family: inherit; }

/* ── Header ── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10,10,10,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
.header-top {
    max-width: 1400px;
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 16px;
}
.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent);
    white-space: nowrap;
    letter-spacing: -0.02em;
}
.search-form {
    flex: 1;
    max-width: 480px;
    position: relative;
}
.search-form input {
    width: 100%;
    padding: 8px 40px 8px 14px;
    background: #1a1a1a;
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text);
    font-size: 0.875rem;
    outline: none;
    transition: border-color 0.2s;
}
.search-form input:focus { border-color: var(--accent); }
.search-form input::placeholder { color: var(--text-dim); }
.search-form button {
    position: absolute; right: 10px; top: 50%; transform: translateY(-50%);
    background: none; border: none; color: var(--text-muted);
    padding: 4px;
}

/* ── Category chips ── */
.category-chips {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px 10px;
    display: flex;
    gap: 8px;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
.category-chips::-webkit-scrollbar { display: none; }

.chip {
    flex-shrink: 0;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8125rem;
    font-weight: 500;
    background: #1a1a1a;
    border: 1px solid var(--border);
    color: var(--text-muted);
    transition: all 0.2s;
    white-space: nowrap;
}
.chip:hover { background: #222; color: var(--text); }
.chip.active {
    background: var(--accent);
    color: #000;
    border-color: var(--accent);
    font-weight: 600;
}

/* ── Filter bar ── */
.filter-bar {
    max-width: 1400px;
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}
.filter-group {
    position: relative;
}
.filter-btn {
    padding: 6px 14px;
    background: #1a1a1a;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 0.8125rem;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
}
.filter-btn:hover, .filter-btn.has-value { border-color: var(--accent); color: var(--text); }
.filter-btn svg { width: 14px; height: 14px; }

.filter-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    background: #1a1a1a;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 8px;
    min-width: 200px;
    max-height: 300px;
    overflow-y: auto;
    z-index: 50;
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}
.filter-dropdown.open { display: block; }
.filter-dropdown label {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px;
    border-radius: 4px;
    font-size: 0.8125rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: background 0.15s;
}
.filter-dropdown label:hover { background: #222; color: var(--text); }
.filter-dropdown input[type="checkbox"] { accent-color: var(--accent); }

.filter-separator { flex: 1; }
.sort-select {
    padding: 6px 12px;
    background: #1a1a1a;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 0.8125rem;
    outline: none;
    cursor: pointer;
}
.sort-select:focus { border-color: var(--accent); }

/* Color chip in mood filter */
.mood-color {
    display: inline-block;
    width: 14px; height: 14px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.15);
    flex-shrink: 0;
}

/* ── Masonry Grid ── */
.masonry-grid {
    max-width: 1400px;
    margin: 0 auto;
    padding: 8px 20px 40px;
    columns: 5;
    column-gap: 12px;
}
.grid-item {
    break-inside: avoid;
    margin-bottom: 12px;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--card);
    border: 1px solid var(--border);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    position: relative;
}
.grid-item:hover {
    transform: scale(1.015);
    box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}
.grid-item a { display: block; }
.grid-item img {
    width: 100%;
    height: auto;
    transition: filter 0.2s;
}
.grid-item:hover img { filter: brightness(1.05); }

/* Blur placeholder */
.grid-item .placeholder {
    width: 100%;
    background-size: cover;
    background-position: center;
}

/* Card overlay (on hover) */
.grid-item .card-overlay {
    position: absolute;
    bottom: 0; left: 0; right: 0; top: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 10px 12px;
    background: linear-gradient(transparent 50%, rgba(0,0,0,0.75));
    opacity: 0;
    transition: opacity 0.2s;
}
.grid-item:hover .card-overlay { opacity: 1; }
.card-overlay-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}
.card-overlay .cat-badge {
    font-size: 0.6875rem;
    color: var(--accent);
    font-weight: 500;
    background: rgba(0,0,0,0.5);
    padding: 2px 8px;
    border-radius: 10px;
}
.card-overlay-bottom {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.card-title {
    font-size: 0.8125rem;
    font-weight: 600;
    color: #fff;
    line-height: 1.3;
    text-shadow: 0 1px 3px rgba(0,0,0,0.6);
}
.card-desc {
    font-size: 0.6875rem;
    color: rgba(255,255,255,0.7);
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ── Loading / empty states ── */
.skeleton {
    background: linear-gradient(90deg, #1a1a1a 25%, #2a2a2a 50%, #1a1a1a 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius);
}
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

.loading-indicator {
    text-align: center;
    padding: 32px;
    color: var(--text-dim);
    font-size: 0.875rem;
}
.empty-state {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-muted);
}
.empty-state h2 { font-size: 1.125rem; margin-bottom: 8px; }
.empty-state p { font-size: 0.875rem; }

/* ── Detail page ── */
.detail-page {
    max-width: 1280px;
    margin: 0 auto;
    padding: 24px 20px;
}
.detail-layout {
    display: grid;
    grid-template-columns: 1fr 460px;
    gap: 32px;
    align-items: start;
}
.detail-left {}
.detail-image {
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--card);
    border: 1px solid var(--border);
}
.detail-image img {
    width: 100%;
    height: auto;
}

/* Meta below image */
.detail-meta-below {
    margin-top: 16px;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    gap: 6px;
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 8px;
    flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--text-dim); }

/* Title + description */
.detail-title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1.3;
    margin-bottom: 6px;
}
.detail-description {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 12px;
}

/* Mood tags */
.mood-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}
.mood-tag {
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    background: #1a1a1a;
    border: 1px solid var(--border);
    color: var(--text-muted);
    transition: border-color 0.2s;
}
.mood-tag:hover { border-color: var(--accent); color: var(--text); }
.mood-dot {
    display: inline-block;
    width: 8px; height: 8px;
    border-radius: 50%;
    margin-right: 4px;
    vertical-align: middle;
}

/* Detail actions */
.detail-actions {
    display: flex;
    gap: 20px;
    padding: 8px 0;
}
.stat { font-size: 0.8125rem; color: var(--text-muted); }
.stat strong { color: var(--text); font-weight: 600; }

/* Right panel */
.detail-right {
    position: sticky;
    top: 80px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* ── Customize panel ── */
.customize-panel {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
}
.customize-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}
.customize-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
    letter-spacing: 0.02em;
}
.customize-hint {
    font-size: 0.75rem;
    color: var(--text-dim);
    margin-bottom: 16px;
}
.reset-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.6875rem;
    transition: all 0.2s;
}
.reset-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}
.var-fields {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.var-field label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 4px;
    font-weight: 500;
}
.var-field input {
    width: 100%;
    padding: 8px 12px;
    background: #0e0e0e;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 0.875rem;
    font-family: var(--font);
    outline: none;
    transition: border-color 0.2s;
}
.var-field input:focus {
    border-color: var(--accent);
}
.var-field input::placeholder {
    color: var(--text-dim);
}

/* ── Advanced toggle ── */
.advanced-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    width: 100%;
    margin-top: 16px;
    padding: 10px 14px;
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 500;
    transition: all 0.2s;
}
.advanced-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
}
.advanced-toggle.open {
    border-color: var(--accent);
    color: var(--accent);
}
.advanced-toggle .toggle-icon {
    display: inline-block;
    transition: transform 0.2s;
    font-size: 0.6875rem;
}
.advanced-toggle.open .toggle-icon {
    transform: rotate(90deg);
}
.advanced-fields {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

/* ── Contenteditable focus ── */
.section-content[contenteditable="true"] {
    outline: none;
    border-radius: 4px;
    padding: 4px 6px;
    margin: -4px -6px;
    transition: background 0.2s, box-shadow 0.2s;
}
.section-content[contenteditable="true"]:focus {
    background: rgba(245, 158, 11, 0.04);
    box-shadow: inset 0 0 0 1px rgba(245, 158, 11, 0.2);
}
.prompt-block-legacy[contenteditable="true"] {
    padding: 16px 20px;
    font-size: 0.8125rem;
    line-height: 1.7;
    color: var(--text);
    word-break: break-word;
    outline: none;
    transition: background 0.2s;
}
.prompt-block-legacy[contenteditable="true"]:focus {
    background: rgba(245, 158, 11, 0.04);
}

/* ── Structured prompt panel ── */
.structured-prompt-panel {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}
.prompt-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
}
.prompt-panel-info {
    display: flex;
    align-items: baseline;
    gap: 10px;
}
.prompt-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
}
.prompt-meta {
    font-size: 0.75rem;
    color: var(--text-dim);
}
.copy-btn-main {
    background: var(--accent);
    color: #000;
    border: none;
    border-radius: 4px;
    padding: 6px 16px;
    font-size: 0.75rem;
    font-weight: 600;
    transition: background 0.2s;
}
.copy-btn-main:hover { background: var(--accent-hover); }
.copy-btn-main.copied { background: #22c55e; }

.structured-prompt {
    padding: 16px 20px;
    max-height: 500px;
    overflow-y: auto;
}
.structured-prompt::-webkit-scrollbar { width: 4px; }
.structured-prompt::-webkit-scrollbar-track { background: transparent; }
.structured-prompt::-webkit-scrollbar-thumb { background: #333; border-radius: 2px; }

.prompt-section-item {
    margin-bottom: 14px;
}
.prompt-section-item:last-child { margin-bottom: 0; }

.section-label {
    font-family: var(--mono);
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 4px;
}
.section-content {
    font-size: 0.8125rem;
    line-height: 1.7;
    color: var(--text);
    word-break: break-word;
}

/* Variable highlight */
.var-highlight {
    color: var(--accent);
    font-weight: 600;
    background: rgba(245, 158, 11, 0.1);
    padding: 0 2px;
    border-radius: 2px;
}

/* Legacy prompt block */
.prompt-block-legacy {
    padding: 16px 20px;
    font-family: var(--mono);
    font-size: 0.8125rem;
    line-height: 1.7;
    color: var(--text);
    white-space: pre-wrap;
    word-break: break-word;
}

/* Meta info */
.meta-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}
.meta-item {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
}
.meta-item .meta-label {
    font-size: 0.6875rem;
    color: var(--text-dim);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.meta-item .meta-value {
    font-size: 0.875rem;
    font-weight: 500;
}

/* Similar section */
.similar-section {
    max-width: 1400px;
    margin: 40px auto 0;
    padding: 0 20px 40px;
}
.section-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    background: var(--accent);
    color: #000;
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 200;
    pointer-events: none;
}
.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* ── Footer ── */
.site-footer {
    text-align: center;
    padding: 32px 20px;
    color: var(--text-dim);
    font-size: 0.75rem;
    border-top: 1px solid var(--border);
}

/* ── Search page ── */
.search-page-header {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px 20px 8px;
}
.search-page-header h1 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text);
}
.search-page-header h1 span { color: var(--accent); }

/* ── 404 ── */
.page-404 {
    text-align: center;
    padding: 120px 20px;
}
.page-404 h1 { font-size: 3rem; font-weight: 700; color: var(--text-dim); }
.page-404 p { color: var(--text-muted); margin-top: 8px; }
.page-404 a { color: var(--accent); margin-top: 16px; display: inline-block; }

/* ═══ Responsive ═══ */
@media (max-width: 1200px) {
    .masonry-grid { columns: 4; }
    .detail-layout { grid-template-columns: 1fr 400px; }
}
@media (max-width: 900px) {
    .masonry-grid { columns: 3; }
    .detail-layout { grid-template-columns: 1fr; }
    .detail-right { position: static; }
    .structured-prompt { max-height: none; }
}
@media (max-width: 640px) {
    .masonry-grid { columns: 2; column-gap: 8px; padding: 8px 12px 40px; }
    .grid-item { margin-bottom: 8px; }
    .header-top { padding: 10px 12px; }
    .category-chips { padding: 0 12px 8px; gap: 6px; }
    .chip { padding: 5px 12px; font-size: 0.75rem; }
    .filter-bar { padding: 8px 12px; }
    .detail-page { padding: 16px 12px; }
    .detail-layout { gap: 16px; }
    .detail-title { font-size: 1.125rem; }
    .customize-panel { padding: 14px; }
    .structured-prompt { padding: 12px 14px; }
    .section-content { font-size: 0.75rem; }
    .similar-section { padding: 0 12px 40px; }
    .card-title { font-size: 0.75rem; }
    .card-desc { font-size: 0.625rem; }
}