/* ==========================================================================
   VIUCraft Demo Page Styles
   ========================================================================== */

/* ---------- Hero ---------- */
.demo-hero {
    background: var(--neutral-50);
    border-bottom: 1px solid var(--neutral-200);
    padding: 56px 0 40px;
    text-align: center;
}

.demo-hero h1 {
    font-size: clamp(1.9rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
    color: #1e293b;
}

.demo-hero p {
    font-size: clamp(1rem, 2vw, 1.1rem);
    color: var(--neutral-500);
    max-width: 520px;
    margin: 0 auto 1.25rem;
    line-height: 1.6;
}

.no-signup-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(54, 179, 126, 0.1);
    color: var(--primary-green);
    border: 1px solid rgba(54, 179, 126, 0.2);
    border-radius: 999px;
    padding: 5px 14px;
    font-size: var(--font-size-sm);
    font-weight: 600;
}

/* ---------- Demo layout ---------- */
.demo-section {
    padding: 56px 0 72px;
}

.demo-layout {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 2.5rem;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
    align-items: start;
}

/* ---------- Controls panel ---------- */
.demo-controls {
    background: var(--neutral-0, #fff);
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-xl);
    padding: 1.75rem;
    box-shadow: var(--shadow-md);
}

.demo-controls h2 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: #1e293b;
}

.op-group {
    margin-bottom: 1.25rem;
}

.op-group-label {
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--neutral-500);
    margin-bottom: 0.625rem;
}

.op-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-md);
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: border-color var(--transition-fast), background var(--transition-fast);
    user-select: none;
}

.op-toggle:hover,
.op-toggle.active {
    border-color: var(--primary-purple);
    background: rgba(113, 97, 239, 0.04);
}

.op-toggle input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary-purple);
    flex-shrink: 0;
}

.op-toggle-icon {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    background: var(--gradient-brand);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    flex-shrink: 0;
}

.op-toggle-name {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: #1e293b;
}

.op-toggle-desc {
    font-size: var(--font-size-xs);
    color: var(--neutral-500);
}

.op-param {
    margin-top: 0.5rem;
    padding: 0 14px 12px;
}

.op-param label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--neutral-500);
    display: block;
    margin-bottom: 4px;
}

.op-param input[type="range"] {
    width: 100%;
    accent-color: var(--primary-purple);
}

.op-param .range-val {
    font-size: var(--font-size-xs);
    color: var(--primary-purple);
    font-weight: 600;
}

/* ---------- Preview area ---------- */
.demo-preview {
    position: sticky;
    top: 1.5rem;
}

.demo-url-bar {
    background: #1e293b;
    border-radius: var(--radius-md);
    padding: 14px 18px;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.demo-url-bar .url-method {
    color: var(--primary-green);
    font-weight: 700;
    font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.demo-url-bar input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: #93c5fd;
    font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
    font-size: 0.82rem;
    min-width: 0;
}

.demo-url-bar .copy-btn {
    background: none;
    border: 1px solid #334155;
    color: #94a3b8;
    border-radius: var(--radius-sm);
    padding: 4px 10px;
    font-size: var(--font-size-xs);
    cursor: pointer;
    white-space: nowrap;
    transition: background var(--transition-fast);
}

.demo-url-bar .copy-btn:hover {
    background: #334155;
}

.demo-image-area {
    background: var(--neutral-0, #fff);
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    position: relative;
}

.demo-image-area img {
    max-width: 100%;
    max-height: 500px;
    object-fit: contain;
    transition: opacity var(--transition-base);
}

.demo-image-area .demo-loading {
    position: absolute;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.7);
}

.demo-image-area.loading .demo-loading {
    display: flex;
}

.demo-ops-summary {
    margin-top: 0.875rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.demo-op-pill {
    background: rgba(113, 97, 239, 0.08);
    border: 1px solid rgba(113, 97, 239, 0.2);
    color: var(--primary-purple);
    border-radius: 999px;
    padding: 4px 12px;
    font-size: var(--font-size-xs);
    font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
    font-weight: 500;
}

.demo-no-ops {
    color: var(--neutral-400);
    font-size: var(--font-size-sm);
    font-style: italic;
}

/* ---------- CTA ---------- */
.demo-cta {
    background: var(--gradient-brand);
    color: #fff;
    padding: 64px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.demo-cta::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
    background-size: 24px 24px;
    pointer-events: none;
}

.demo-cta .container {
    position: relative;
    z-index: 1;
}

.demo-cta h2 {
    font-size: clamp(1.5rem, 3vw, 1.9rem);
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.demo-cta p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    max-width: 480px;
    margin: 0 auto 2rem;
}

.demo-cta .btn-light {
    padding: 0.75rem 2rem;
    font-size: 1rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    color: var(--primary-purple);
}

.demo-cta .btn-outline-light {
    padding: 0.75rem 2rem;
    font-size: 1rem;
    border-radius: var(--radius-md);
    font-weight: 500;
}

/* ---------- Responsive ---------- */
@media (max-width: 800px) {
    .demo-layout {
        grid-template-columns: 1fr;
    }

    .demo-preview {
        position: static;
    }

    .demo-hero {
        padding: 40px 0 32px;
    }
}