/* ── SynthVision Demo Block — Frontend styles ────────────── */

.svdemo-section {
    --sv-bg:        #0A0A0F;
    --sv-surface:   #13131A;
    --sv-panel:     #1A1A24;
    --sv-border:    rgba(255,255,255,0.07);
    --sv-border-hi: rgba(255,255,255,0.14);
    --sv-text:      #F0F0F5;
    --sv-muted:     #5A5A6A;
    --sv-muted-hi:  #888896;
    --sv-accent:    #FF4D1C;
    --sv-active:    #FF4D1C; /* overridden per category by JS */
    --sv-radius:    20px;
    --sv-radius-sm: 12px;
    --sv-mono:      'DM Mono', 'Courier New', monospace;
    --sv-head:      'Syne', system-ui, sans-serif;
    --sv-body:      'DM Sans', system-ui, sans-serif;
}

.svdemo-section {
    background: var(--sv-bg);
    color: var(--sv-text);
    padding: 100px 0;
    font-family: var(--sv-body);
    -webkit-font-smoothing: antialiased;
}

/* ── Section head ─────────────────────────────────────────── */
.svdemo-head {
    max-width: 1240px;
    margin: 0 auto 56px;
    padding: 0 48px;
}

.svdemo-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: var(--sv-mono);
    font-size: 0.58rem;
    letter-spacing: 1.5px;
    color: var(--sv-muted-hi);
}
.svdemo-status-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: #4ADE80;
    animation: svdemo-pulse 2s infinite;
}
@keyframes svdemo-pulse {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.3; }
}

.svdemo-mask-badge {
    position: absolute;
    top: 50px;
    left: 16px;
    padding: 3px 8px;
    background: rgba(255,77,28,0.15);
    border: 1px solid rgba(255,77,28,0.4);
    color: var(--sv-accent);
    font-family: var(--sv-mono);
    font-size: 0.6rem;
    letter-spacing: 1px;
    border-radius: 4px;
    z-index: 30;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}
.svdemo-mask-badge.svdemo-on { opacity: 1; }

.svdemo-scan-line {
    position: absolute;
    top: 0; left: 0; right: 0; height: 100%;
    background: linear-gradient(to bottom, transparent, var(--sv-accent), transparent);
    background-size: 100% 2px;
    background-repeat: no-repeat;
    background-position: 0 -100%;
    z-index: 40;
    opacity: 0;
    pointer-events: none;
}
.svdemo-scan-line.svdemo-active {
    animation: svdemo-scan 2.5s linear infinite;
    opacity: 0.15;
}
@keyframes svdemo-scan {
    0% { background-position: 0 0%; }
    100% { background-position: 0 100%; }
}

.svdemo-kicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--sv-mono);
    font-size: 0.68rem;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--sv-accent);
    margin-bottom: 16px;
}
.svdemo-kicker::before {
    content: '';
    display: inline-block;
    width: 18px; height: 1px;
    background: var(--sv-accent);
}

.svdemo-title {
    font-family: var(--sv-head);
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.05;
    margin-bottom: 16px;
    color: var(--sv-text);
}

.svdemo-subtitle {
    color: var(--sv-muted-hi);
    font-size: 1.05rem;
    font-weight: 300;
    line-height: 1.75;
    max-width: 580px;
}

/* ── Category tabs ────────────────────────────────────────── */
.svdemo-cat-tabs {
    max-width: 1240px;
    margin: 0 auto 36px;
    padding: 0 48px;
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.svdemo-cat-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 100px;
    border: 1px solid var(--sv-border);
    background: var(--sv-surface);
    color: var(--sv-muted-hi);
    font-family: var(--sv-body);
    font-size: 0.88rem;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.22s ease;
}
.svdemo-cat-btn:hover {
    border-color: var(--sv-border-hi);
    color: var(--sv-text);
}
.svdemo-cat-btn.svdemo-active {
    font-weight: 600;
    color: #000;
}
.svdemo-cat-icon { font-size: 1rem; }

/* ── Main grid ────────────────────────────────────────────── */
.svdemo-grid {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 48px;
    display: grid;
    grid-template-columns: 1fr 1.65fr;
    gap: 28px;
    align-items: start;
}

/* ── Left panel ───────────────────────────────────────────── */
.svdemo-left {
    position: sticky;
    top: 100px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.svdemo-var-info {
    background: var(--sv-surface);
    border: 1px solid var(--sv-border);
    border-radius: var(--sv-radius);
    padding: 26px;
    position: relative;
    overflow: hidden;
    min-height: 160px;
}
.svdemo-var-info::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: var(--sv-active);
    transition: background 0.4s;
}

.svdemo-var-tag {
    font-family: var(--sv-mono);
    font-size: 0.62rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--sv-active);
    margin-bottom: 10px;
    transition: color 0.4s;
}

.svdemo-var-title {
    font-family: var(--sv-head);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.03em;
    line-height: 1.2;
    color: var(--sv-text);
}

.svdemo-var-desc {
    color: var(--sv-muted-hi);
    font-size: 0.87rem;
    font-weight: 300;
    line-height: 1.7;
}

/* Variation buttons */
.svdemo-var-btns {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.svdemo-var-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-radius: var(--sv-radius-sm);
    border: 1px solid var(--sv-border);
    background: var(--sv-surface);
    color: var(--sv-muted-hi);
    font-family: var(--sv-body);
    font-size: 0.87rem;
    cursor: pointer;
    transition: all 0.18s;
    text-align: left;
    width: 100%;
}
.svdemo-var-btn:hover {
    border-color: var(--sv-border-hi);
    color: var(--sv-text);
}
.svdemo-var-btn.svdemo-active {
    border-color: var(--sv-active);
    color: var(--sv-text);
    background: var(--sv-panel);
}

.svdemo-vb-left {
    display: flex;
    align-items: center;
    gap: 10px;
}
.svdemo-vb-dot {
    width: 5px; height: 5px;
    border-radius: 50%;
    background: var(--sv-muted);
    transition: background 0.18s;
    flex-shrink: 0;
}
.svdemo-var-btn.svdemo-active .svdemo-vb-dot { background: var(--sv-active); }

.svdemo-vb-arr {
    font-size: 0.7rem;
    color: var(--sv-muted);
    opacity: 0;
    transform: translateX(-4px);
    transition: all 0.18s;
}
.svdemo-var-btn:hover .svdemo-vb-arr,
.svdemo-var-btn.svdemo-active .svdemo-vb-arr { opacity: 1; transform: none; }

/* Mask toggle */
.svdemo-mask-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 12px;
    border-radius: 8px;
    border: 1px solid var(--sv-border-hi);
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(8px);
    cursor: pointer;
    transition: all 0.2s;
    user-select: none;
    pointer-events: auto;
}
.svdemo-mask-toggle:hover { background: rgba(10, 10, 15, 1); border-color: var(--sv-accent); }
.svdemo-mask-toggle.svdemo-on { border-color: var(--sv-accent); background: rgba(255, 77, 28, 0.1); }

.svdemo-tog-track {
    width: 28px; height: 16px;
    border-radius: 100px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    transition: background 0.25s;
    flex-shrink: 0;
}
.svdemo-mask-toggle.svdemo-on .svdemo-tog-track {
    background: var(--sv-accent);
    border-color: var(--sv-accent);
}
.svdemo-tog-knob {
    position: absolute;
    top: 2px; left: 2px;
    width: 10px; height: 10px;
    border-radius: 50%;
    background: white;
    transition: transform 0.25s cubic-bezier(0.34,1.56,0.64,1);
}
.svdemo-mask-toggle.svdemo-on .svdemo-tog-knob { transform: translateX(12px); }

.svdemo-tog-label {
    font-family: var(--sv-mono);
    font-size: 0.6rem;
    color: var(--sv-muted-hi);
    letter-spacing: 1px;
    text-transform: uppercase;
}
.svdemo-mask-toggle.svdemo-on .svdemo-tog-label { color: var(--sv-text); }

/* ── Right panel ──────────────────────────────────────────── */
.svdemo-right { position: relative; }

/* ── Viewport ─────────────────────────────────────────────── */
.svdemo-viewport {
    position: relative;
    border-radius: var(--sv-radius);
    overflow: hidden;
    background: var(--sv-panel);
    border: 1px solid var(--sv-border);
    aspect-ratio: 16 / 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

.svdemo-c {
    position: absolute;
    width: 16px; height: 16px;
    border-style: solid;
    opacity: 0.45; z-index: 5;
}
.svdemo-c-tl { top:10px; left:10px;  border-width: 1px 0 0 1px; }
.svdemo-c-tr { top:10px; right:10px; border-width: 1px 1px 0 0; }
.svdemo-c-bl { bottom:10px; left:10px;  border-width: 0 0 1px 1px; }
.svdemo-c-br { bottom:10px; right:10px; border-width: 0 1px 1px 0; }

.svdemo-img {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    transition: opacity 0.3s;
}
.svdemo-vid {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    opacity: 0;
}
.svdemo-mask-img {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    opacity: 0;
    mix-blend-mode: screen;
    transition: opacity 0.32s;
    pointer-events: none;
}
.svdemo-mask-img.svdemo-mask-on { opacity: 0.78; }

/* Placeholder */
.svdemo-placeholder {
    position: absolute; inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
}
.svdemo-ph-frame {
    width: 220px; height: 150px;
    border-radius: 8px;
    border: 1px dashed var(--sv-border-hi);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: rgba(255,255,255,0.015);
    position: relative;
    overflow: hidden;
}
.svdemo-ph-frame::before {
    content: '';
    position: absolute; inset: 0;
    background: repeating-linear-gradient(0deg, transparent, transparent 2px,
        rgba(255,255,255,0.01) 2px, rgba(255,255,255,0.01) 3px);
}
.svdemo-ph-icon { font-size: 2rem; position: relative; z-index: 1; }
.svdemo-ph-code {
    font-family: var(--sv-mono);
    font-size: 0.56rem; letter-spacing: 2px;
    color: rgba(255,255,255,0.18);
    position: relative; z-index: 1;
}
.svdemo-ph-file {
    font-family: var(--sv-mono);
    font-size: 0.58rem; letter-spacing: 1px;
    color: var(--sv-muted);
}

/* HUD */
.svdemo-hud { position: absolute; z-index: 10; pointer-events: none; }
.svdemo-hud-tl { top:16px; left:16px; }
.svdemo-hud-tr { top:16px; right:16px; }
.svdemo-hud-bl { bottom:16px; left:16px; display:flex; gap:8px; align-items:center; }
.svdemo-hud-br { bottom:16px; right:16px; pointer-events: auto; }
.svdemo-hud-bot {
    bottom: 0; left: 0; right: 0;
    z-index: 15;
}

/* Progress bar */
.svdemo-prog-bar {
    width: 100%;
    height: 2px;
    background: rgba(255,255,255,0.06);
}
.svdemo-prog-fill {
    height: 100%;
    width: 0%;
    background: var(--sv-active);
    transition: background 0.4s;
}

.svdemo-chip {
    font-family: var(--sv-mono);
    font-size: 0.56rem; letter-spacing: 1.5px; text-transform: uppercase;
    padding: 3px 8px; border-radius: 4px;
    background: rgba(10,10,15,0.82); border: 1px solid var(--sv-border-hi);
    color: var(--sv-muted-hi); backdrop-filter: blur(8px);
}
.svdemo-chip-hi { color: var(--sv-active); border-color: var(--sv-active); }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 900px) {
    .svdemo-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 24px;
    }
    .svdemo-left { position: static; }
    .svdemo-head,
    .svdemo-cat-tabs { padding: 0 24px; }
    .svdemo-section { padding: 64px 0; }
    .svdemo-title { font-size: 1.8rem; }
}