/* ==========================================================================
   Single-Line SVG Font Studio Stylesheet
   Companion to globals.css
   ========================================================================== */

body {
    padding: 2rem 1.5rem 5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* ==========================================================================
   1. Font Metadata & Metrics Banner (Vellum Sheet Surface)
   ========================================================================== */
.font-meta-card {
    background: var(--tint-sheet);
    border: 1px solid var(--ink-07);
    border-radius: var(--r-2xl);
    padding: 1.4rem 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    box-shadow: var(--shadow-resting);
    position: relative;
    overflow: visible;
}

.font-meta-top-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.25rem;
    border-bottom: 1px solid var(--ink-07);
    padding-bottom: 0.85rem;
}

.font-title-row {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    flex-wrap: wrap;
}

.font-title-row h1 {
    font-family: var(--font-display, 'Fraunces', serif);
    font-size: 2.1rem;
    font-weight: 700;
    color: var(--ink);
    letter-spacing: -0.025em;
    line-height: 1.15;
}

.btn-change-font {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    background: var(--tint-chamois);
    border: 1px solid var(--ink-14);
    color: var(--tint-crimson);
    padding: 0.38rem 0.85rem;
    border-radius: var(--r-pill);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: border-color 0.15s ease, background-color 0.15s ease;
    user-select: none;
    text-decoration: none;
    box-shadow: 0 1px 2px rgba(60, 30, 10, 0.05);
}

.btn-change-font:hover {
    background: #ffffff;
    border-color: var(--tint-crimson);
}

.font-metrics-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.metric-badge {
    background: var(--tint-chamois);
    border: 1px solid rgba(255, 255, 255, 0.85);
    padding: 0.35rem 0.75rem;
    border-radius: var(--r-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 72px;
    box-shadow: var(--shadow-inner-subtle);
}

.metric-badge .m-label {
    font-family: var(--font-code, 'Tektur', monospace);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--ink-50);
    font-weight: 700;
}

.metric-badge .m-val {
    font-family: var(--font-code, 'Tektur', monospace);
    font-size: 0.94rem;
    font-weight: 700;
    color: var(--ink);
}

.font-meta-bottom-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.25rem;
    padding-top: 0.25rem;
}

.font-attribution {
    font-size: 0.86rem;
    color: var(--ink-50);
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

.origin-link {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    color: var(--tint-crimson);
    text-decoration: none;
    font-weight: 600;
    padding: 0.18rem 0.55rem;
    background: var(--tint-chamois);
    border: 1px solid var(--ink-14);
    border-radius: var(--r-sm);
    box-shadow: var(--shadow-inner-subtle);
    transition: border-color 0.15s ease, background-color 0.15s ease;
}

.origin-link:hover {
    background: #ffffff;
    border-color: var(--tint-crimson);
}

/* ==========================================================================
   2. Studio Main Layout (Stage + Frosted Settings Sidebar)
   ========================================================================== */
.studio-layout-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 390px;
    gap: 1.5rem;
    align-items: stretch;
    position: relative;
}

/* Center Stage Container */
.studio-main-card {
    background: var(--tint-sheet);
    border: 1px solid var(--ink-07);
    border-radius: var(--r-2xl);
    padding: 1.25rem 1.4rem;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-resting);
    min-height: 540px;
    min-width: 0;
    overflow: hidden;
}

.btn-export-action {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.42rem 0.85rem;
    border-radius: var(--r-pill);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: border-color 0.15s ease, background-color 0.15s ease, color 0.15s ease;
    border: 1px solid var(--ink-14);
    background: var(--tint-sheet);
    color: var(--ink-70);
    box-shadow: 0 1px 2px rgba(60, 30, 10, 0.05);
}

.btn-export-action:hover {
    background: #ffffff;
    border-color: var(--ink-28);
    color: var(--ink);
}

.btn-export-action.primary {
    background: var(--ink);
    color: var(--tint-sheet);
    border-color: var(--ink);
}

.btn-export-action.primary:hover {
    background: #333333;
    border-color: #333333;
}

.btn-export-action.silhouette {
    background: var(--tint-chamois);
    border-color: var(--tint-terracotta);
    color: var(--tint-terracotta);
}

.btn-export-action.silhouette:hover {
    background: var(--tint-terracotta);
    color: #ffffff;
    border-color: var(--tint-terracotta);
}

/* Stage Viewport (Tactile Drafting Mat Surface with Transparent Grid) */
.stage-viewport-box {
    width: 100%;
    min-width: 0;
    max-width: 100%;
    flex: 1;
    min-height: 460px;
    border: 1px solid var(--ink-14);
    border-radius: var(--r-xl);
    padding: 2.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: auto;
    box-shadow: var(--shadow-inner);
}

.paper-card-frame {
    width: 100%;
    min-width: 0;
    max-width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.15s ease-out;
    transform-origin: center center;
    position: relative;
    border-radius: 4px;
    box-shadow: 
        0 14px 38px rgba(45, 30, 20, 0.18),
        0 2px 8px rgba(45, 30, 20, 0.10),
        0 0 0 1px rgba(0, 0, 0, 0.08);
}

.stage-viewport-box svg {
    width: 100%;
    max-width: 100%;
    height: auto;
    overflow: visible;
    display: block;
}

/* ==========================================================================
   3. Unified Settings Sidebar (Frosted Vellum Panel)
   ========================================================================== */
.studio-sidebar {
    background: rgba(253, 250, 246, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.95);
    border-radius: var(--r-2xl);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.15rem;
    box-shadow: var(--shadow-floating);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    overflow-y: auto;
    max-height: calc(100vh - 120px);
    position: sticky;
    top: 1rem;
}

.sidebar-field {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.sidebar-field label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--ink-70);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-textarea {
    width: 100%;
    background: var(--tint-sheet);
    border: 1px solid var(--ink-14);
    border-radius: var(--r-md);
    padding: 0.7rem 0.85rem;
    color: var(--ink);
    font-family: var(--font-body, 'Noto Sans', sans-serif);
    font-size: 0.92rem;
    outline: none;
    box-shadow: var(--shadow-inner-subtle);
    transition: border-color 0.2s, box-shadow 0.2s;
    resize: vertical;
    min-height: 85px;
    line-height: 1.45;
}

.sidebar-textarea:focus {
    border-color: var(--tint-terracotta);
    box-shadow: 0 0 0 2px var(--tint-sheet), 0 0 0 4px var(--tint-terracotta), var(--shadow-inner-subtle);
}

.sidebar-select {
    width: 100%;
    background: var(--tint-sheet);
    border: 1px solid var(--ink-14);
    color: var(--ink);
    padding: 0.48rem 0.75rem;
    border-radius: var(--r-md);
    font-size: 0.85rem;
    outline: none;
    cursor: pointer;
    box-shadow: var(--shadow-inner-subtle);
    transition: border-color 0.2s;
}

.sidebar-select:focus {
    border-color: var(--tint-terracotta);
}

.sidebar-slider-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sidebar-slider-row input[type="range"] {
    flex: 1;
    accent-color: var(--tint-crimson);
    cursor: pointer;
}

/* Concentric Rocker Switch Buttons */
.unit-btn-group, .align-btn-group, .frame-btn-group {
    display: flex;
    background: var(--tint-chamois);
    border: 1px solid var(--ink-14);
    border-radius: var(--r-pill);
    padding: 2px;
    box-shadow: var(--shadow-inner-subtle);
    width: 100%;
}

.unit-btn, .align-btn, .frame-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--ink-70);
    padding: 0.35rem 0.5rem;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
    border-radius: var(--r-pill);
}

.unit-btn:hover, .align-btn:hover, .frame-btn:hover {
    color: var(--ink);
}

.unit-btn.active, .align-btn.active, .frame-btn.active {
    background: var(--ink);
    color: var(--tint-sheet);
    font-weight: 700;
    box-shadow: var(--shadow-floating);
}

.preset-chips-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

/* ==========================================================================
   4. Full Glyphs Gallery Grid & Bottom Specimen Drawer
   ========================================================================== */
.gallery-section {
    background: var(--tint-sheet);
    border: 1px solid var(--ink-07);
    border-radius: var(--r-2xl);
    padding: 1.5rem 1.75rem;
    box-shadow: var(--shadow-resting);
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.gallery-controls-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    border-bottom: 1px solid var(--ink-07);
    padding-bottom: 0.85rem;
}


.search-box {
    min-width: 240px;
}

/* Suppress hover transitions and hit-testing on cards & chips during active scrolling */
body.is-scrolling .glyph-card,
body.is-scrolling .rocker-btn,
body.is-scrolling .preset-chip-btn,
body.is-scrolling .color-dot {
    pointer-events: none !important;
}

.glyphs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 1rem;
    width: 100%;
}

.glyph-card {
    background: var(--tint-sheet);
    border: 1px solid var(--ink-14);
    border-radius: var(--r-lg);
    padding: 0.85rem 0.65rem 0.6rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    aspect-ratio: 1 / 1.15;
    cursor: pointer;
    position: relative;
    transition: border-color 0.12s ease, background-color 0.12s ease;
    user-select: none;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    box-shadow: var(--shadow-sm);
}

.glyph-card:hover {
    border-color: var(--tint-terracotta);
    background: #ffffff;
}

.glyph-card-preview {
    width: 100%;
    height: 72%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2px;
}

.glyph-card-preview svg {
    width: 100%;
    height: 100%;
    stroke: var(--ink);
    transition: stroke 0.15s ease;
    overflow: visible;
}

.glyph-card:hover .glyph-card-preview svg {
    stroke: var(--tint-crimson);
}

.glyph-card-footer {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.72rem;
    border-top: 1px solid var(--ink-07);
    padding-top: 0.4rem;
    color: var(--ink-50);
    font-family: var(--font-code, 'Tektur', monospace);
}

.glyph-card-footer .char-sym {
    font-weight: 700;
    color: var(--ink);
    font-size: 0.88rem;
}

.glyph-card-footer .hex-code {
    color: var(--ink-50);
}


@media (max-width: 960px) {
    .studio-layout-grid {
        grid-template-columns: 1fr;
    }
    .studio-sidebar {
        position: static;
        max-height: none;
    }
    .font-meta-bottom-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.85rem;
    }
}