/* ==========================================================================
   AI Design Studio section (services.html#design-studio)
   Dark glass treatment matching style.css tokens.
   ========================================================================== */
.design-studio-section {
    position: relative;
    background:
        radial-gradient(60% 50% at 15% 0%, rgba(0, 242, 254, 0.10) 0%, transparent 60%),
        radial-gradient(50% 45% at 90% 100%, rgba(254, 9, 121, 0.12) 0%, transparent 60%),
        var(--bg-secondary);
    overflow: hidden;
}
.design-studio-section .section-header { margin-bottom: 44px; }

.ds-workspace {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 24px;
    align-items: start;
}
.ds-panel { padding: 28px 28px 26px; }
.ds-panel-head { margin-bottom: 20px; }
.ds-kicker {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.72rem;
    letter-spacing: 0.18em;
    color: var(--accent-cyan);
    margin-bottom: 8px;
}
.ds-panel-head h3 { font-size: 1.25rem; margin: 0 0 6px; color: var(--text-primary); }
.ds-panel-head p { color: var(--text-secondary); font-size: 0.92rem; margin: 0; line-height: 1.6; }

.ds-form { display: flex; flex-direction: column; gap: 14px; }
.ds-form label.ds-label { font-size: 0.85rem; font-weight: 600; color: var(--text-primary); }
.ds-form textarea,
.ds-form input[type="text"],
.ds-form select {
    width: 100%;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--text-primary);
    font: inherit;
    font-size: 0.95rem;
    padding: 12px 14px;
    transition: border-color var(--trans-fast), background var(--trans-fast);
}
.ds-form textarea { min-height: 110px; resize: vertical; line-height: 1.55; }
.ds-form textarea::placeholder, .ds-form input::placeholder { color: var(--text-muted); }
.ds-form textarea:focus, .ds-form input:focus, .ds-form select:focus {
    outline: none;
    border-color: rgba(0, 242, 254, 0.55);
    background: rgba(0, 242, 254, 0.04);
}
.ds-form select option { background: #15151a; color: #fff; }
.ds-meta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.ds-field { display: flex; flex-direction: column; gap: 6px; }
.ds-field > span { font-size: 0.78rem; color: var(--text-secondary); letter-spacing: 0.02em; }
.ds-microcopy { font-size: 0.8rem; color: var(--text-muted); line-height: 1.6; }

.ds-chip-groups { display: flex; flex-direction: column; gap: 10px; }
.ds-chip-group-title { font-size: 0.72rem; letter-spacing: 0.12em; color: var(--text-muted); font-family: var(--font-heading); margin-bottom: 6px; }
.ds-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.ds-chip {
    border: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-secondary);
    border-radius: 999px;
    padding: 7px 13px;
    font: inherit;
    font-size: 0.82rem;
    cursor: pointer;
    transition: all var(--trans-fast);
}
.ds-chip:hover, .ds-chip:focus-visible { color: var(--text-primary); border-color: rgba(0, 242, 254, 0.5); background: rgba(0, 242, 254, 0.06); }

.ds-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin-top: 4px; }
.ds-actions .ds-hint { font-size: 0.78rem; color: var(--text-muted); }
.ds-error { display: none; margin-top: 10px; padding: 10px 14px; border-radius: 10px; background: rgba(254, 9, 121, 0.10); border: 1px solid rgba(254, 9, 121, 0.35); color: #ff8ab8; font-size: 0.85rem; }
.ds-error.on { display: block; }

/* preview */
.ds-preview-toolbar { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; font-size: 0.78rem; color: var(--text-muted); }
.ds-zoom { display: flex; gap: 6px; align-items: center; }
.ds-zoom-btn {
    border: 1px solid var(--glass-border); background: rgba(255, 255, 255, 0.03); color: var(--text-secondary);
    border-radius: 8px; padding: 5px 10px; font: inherit; font-size: 0.75rem; cursor: pointer; transition: all var(--trans-fast);
}
.ds-zoom-btn:hover:not(:disabled) { color: var(--text-primary); border-color: var(--glass-border-hover); }
.ds-zoom-btn:disabled { opacity: 0.4; cursor: default; }
.ds-zoom-label { min-width: 44px; text-align: center; font-family: var(--font-heading); color: var(--text-primary); }

.ds-result {
    position: relative;
    aspect-ratio: 1 / 1;
    border-radius: 16px;
    border: 1px dashed rgba(255, 255, 255, 0.14);
    background:
        linear-gradient(135deg, rgba(0, 242, 254, 0.06), rgba(254, 9, 121, 0.06)),
        rgba(0, 0, 0, 0.35);
    overflow: hidden;
}
.ds-result.has-image { border-style: solid; border-color: var(--glass-border-hover); }
.ds-placeholder { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; text-align: center; padding: 24px; color: var(--text-muted); font-size: 0.92rem; line-height: 1.7; }
.ds-placeholder b { color: var(--text-primary); }
.ds-placeholder svg { display: block; margin: 0 auto 14px; opacity: 0.6; }

.ds-loader { position: absolute; inset: 0; display: none; align-items: center; justify-content: center; background: rgba(12, 12, 14, 0.75); backdrop-filter: blur(4px); z-index: 2; }
.ds-loader.on { display: flex; }
.ds-loader-shell { text-align: center; padding: 20px; max-width: 320px; }
.ds-spinner { width: 42px; height: 42px; margin: 0 auto 14px; border-radius: 50%; border: 3px solid rgba(255, 255, 255, 0.12); border-top-color: var(--accent-cyan); border-right-color: var(--accent-magenta); animation: ds-spin 0.9s linear infinite; }
@keyframes ds-spin { to { transform: rotate(360deg); } }
.ds-step { font-size: 0.9rem; color: var(--text-primary); margin-bottom: 12px; }
.ds-progress { height: 4px; border-radius: 999px; background: rgba(255, 255, 255, 0.1); overflow: hidden; }
.ds-progress i { display: block; height: 100%; width: 40%; border-radius: 999px; background: linear-gradient(90deg, var(--accent-cyan), var(--accent-magenta)); animation: ds-slide 1.4s ease-in-out infinite; }
@keyframes ds-slide { 0% { transform: translateX(-100%); } 100% { transform: translateX(260%); } }
.ds-loader-note { margin-top: 10px; font-size: 0.75rem; color: var(--text-muted); }

.ds-stage { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; overflow: auto; padding: 12px; }
.ds-stage.zoomed { align-items: flex-start; justify-content: flex-start; cursor: grab; }
.ds-stage.dragging { cursor: grabbing; }
.ds-stage img { display: none; max-width: 100%; max-height: 100%; border-radius: 10px; box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5); cursor: zoom-in; user-select: none; }

.ds-caption { display: none; align-items: flex-start; gap: 12px; margin-top: 14px; padding: 14px 16px; border-radius: 12px; background: rgba(0, 242, 254, 0.06); border: 1px solid rgba(0, 242, 254, 0.25); }
.ds-caption.on { display: flex; }
.ds-caption .ds-badge { flex: 0 0 26px; width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; background: linear-gradient(135deg, var(--accent-cyan), var(--accent-magenta)); color: #0c0c0e; font-weight: 800; font-size: 0.8rem; }
.ds-caption b { display: block; color: var(--text-primary); font-size: 0.92rem; margin-bottom: 2px; }
.ds-caption span { color: var(--text-secondary); font-size: 0.82rem; }
.ds-caption .ds-caption-actions { margin-left: auto; align-self: center; }

.ds-footnote { margin-top: 26px; text-align: center; color: var(--text-muted); font-size: 0.8rem; line-height: 1.7; }

/* lightbox */
.ds-lightbox { position: fixed; inset: 0; z-index: 9999; display: none; align-items: center; justify-content: center; background: rgba(0, 0, 0, 0.9); padding: 24px; }
.ds-lightbox.on { display: flex; }
.ds-lightbox img { max-width: min(92vw, 1100px); max-height: 90vh; border-radius: 12px; box-shadow: 0 30px 80px rgba(0, 0, 0, 0.7); }
.ds-lightbox-close { position: absolute; top: 18px; right: 22px; width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--glass-border-hover); background: rgba(255, 255, 255, 0.08); color: #fff; font-size: 1.4rem; line-height: 1; cursor: pointer; }

@media (max-width: 992px) {
    .ds-workspace { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
    .ds-panel { padding: 22px 18px; }
    .ds-meta-grid { grid-template-columns: 1fr; }
    .ds-actions .btn { width: 100%; }
    .ds-caption .ds-caption-actions { margin-left: 0; width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
    .ds-spinner, .ds-progress i { animation: none; }
}

/* preset gallery */
.ds-chip.active { color: var(--text-primary); border-color: var(--accent-cyan); background: rgba(0, 242, 254, 0.10); }
.ds-thumbs { display: grid; grid-template-columns: repeat(7, 1fr); gap: 8px; margin-top: 14px; }
.ds-thumb {
    position: relative; padding: 0; border: 1px solid var(--glass-border); border-radius: 10px; overflow: hidden;
    background: rgba(255, 255, 255, 0.03); cursor: pointer; aspect-ratio: 1 / 1; transition: all var(--trans-fast);
}
.ds-thumb img { display: block; width: 100%; height: 100%; object-fit: cover; }
.ds-thumb span { position: absolute; left: 0; right: 0; bottom: 0; padding: 4px 6px; font-size: 0.62rem; line-height: 1.3; color: #fff; background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.75)); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; text-align: left; }
.ds-thumb:hover, .ds-thumb:focus-visible { border-color: var(--glass-border-hover); transform: translateY(-2px); }
.ds-thumb.active { border-color: var(--accent-cyan); box-shadow: 0 0 0 2px rgba(0, 242, 254, 0.35); }
.ds-thumbs-label { margin-top: 18px; font-size: 0.72rem; letter-spacing: 0.12em; color: var(--text-muted); font-family: var(--font-heading); }
.ds-showing-preset .ds-caption { background: rgba(255, 255, 255, 0.04); border-color: var(--glass-border); }
.ds-showing-preset .ds-caption .ds-badge { background: linear-gradient(135deg, var(--accent-purple), var(--accent-magenta)); color: #fff; }
@media (max-width: 600px) { .ds-thumbs { grid-template-columns: repeat(4, 1fr); } }

/* idle slideshow (before the visitor picks anything) */
.ds-slideshow { position: absolute; inset: 0; display: none; cursor: pointer; z-index: 1; }
.ds-idle .ds-slideshow { display: block; }
.ds-idle .ds-stage { visibility: hidden; }
.ds-slideshow img { position: absolute; inset: 12px; width: calc(100% - 24px); height: calc(100% - 24px); object-fit: contain; border-radius: 10px; opacity: 0; transition: opacity 1.1s ease; }
.ds-slideshow img.show { opacity: 1; }
.ds-slideshow .ds-slide-hint { position: absolute; left: 50%; bottom: 14px; transform: translateX(-50%); padding: 6px 12px; border-radius: 999px; font-size: 0.72rem; color: var(--text-primary); background: rgba(12, 12, 14, 0.7); border: 1px solid var(--glass-border); white-space: nowrap; pointer-events: none; }
.ds-thumb.current { border-color: rgba(255, 255, 255, 0.45); }
@media (prefers-reduced-motion: reduce) { .ds-slideshow img { transition: none; } }

/* text / brand pack / assets */
.ds-field-check .ds-check { display: flex; align-items: center; gap: 8px; padding: 12px 14px; border: 1px solid var(--glass-border); border-radius: 12px; background: rgba(255, 255, 255, 0.04); color: var(--text-primary); font-size: 0.9rem; cursor: pointer; }
.ds-field-check input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--accent-cyan); margin: 0; }
.ds-assets { display: flex; flex-direction: column; gap: 10px; padding: 14px; border: 1px dashed rgba(255, 255, 255, 0.14); border-radius: 12px; }
.ds-assets-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.ds-upload-btn { cursor: pointer; }
.ds-asset-list { display: flex; gap: 10px; flex-wrap: wrap; }
.ds-asset-list:empty { display: none; }
.ds-asset { position: relative; width: 72px; height: 72px; border-radius: 10px; overflow: hidden; border: 1px solid var(--glass-border); background: repeating-conic-gradient(rgba(255,255,255,0.06) 0 25%, transparent 0 50%) 0 0 / 12px 12px; }
.ds-asset img { width: 100%; height: 100%; object-fit: contain; display: block; }
.ds-asset button { position: absolute; top: 3px; right: 3px; width: 20px; height: 20px; border-radius: 50%; border: 0; background: rgba(0, 0, 0, 0.7); color: #fff; font-size: 12px; line-height: 20px; cursor: pointer; padding: 0; }
.ds-asset span { position: absolute; left: 0; right: 0; bottom: 0; font-size: 0.6rem; padding: 2px 4px; background: rgba(0, 0, 0, 0.6); color: #fff; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }