/* ── QR Design Studio (QR Monkey–style) ─────────────────────── */

.qr-creator {
    background: linear-gradient(160deg, #1f6b47 0%, #2d8f5c 45%, #3BBB6E 100%);
    padding-bottom: var(--sp-10);
}

.qr-creator__header {
    color: #fff;
}

.qr-creator__subtitle {
    color: rgba(255, 255, 255, .85);
}

.qr-creator__title {
    color: #fff;
}

.qr-studio {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.qr-studio .qr-type-selector {
    border-bottom: 1px solid var(--color-border);
    background: linear-gradient(180deg, #f8faf9 0%, #fff 100%);
    padding: var(--sp-3) var(--sp-4);
    margin: 0;
    border-radius: 0;
    gap: var(--sp-2);
    overflow-x: auto;
    flex-wrap: nowrap;
    scrollbar-width: thin;
}

.qr-studio .qr-type-tab {
    flex-shrink: 0;
    white-space: nowrap;
    border-radius: var(--radius-md);
    padding: var(--sp-2) var(--sp-4);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border: 1px solid transparent;
    transition: background .2s, color .2s, border-color .2s;
}

.qr-studio .qr-type-tab--active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary-dark, #2d9d5a);
    position: relative;
}

.qr-studio .qr-type-tab--active::after {
    content: '';
    position: absolute;
    bottom: -9px;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--color-primary);
}

.qr-studio__grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 0;
    min-height: 520px;
}

.qr-studio__config {
    padding: var(--sp-4) var(--sp-5);
    border-left: 1px solid var(--color-border);
}

/* Accordion */
.qr-design-acc {
    display: flex;
    flex-direction: column;
    gap: var(--sp-2);
}

.qr-design-acc__item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: #fff;
}

.qr-design-acc__head {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    padding: var(--sp-3) var(--sp-4);
    background: linear-gradient(90deg, #f0f7f3 0%, #fff 100%);
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-text);
    text-align: right;
    transition: background .2s;
}

.qr-design-acc__head:hover {
    background: #e8f5ee;
}

.qr-design-acc__icon {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    font-size: 14px;
}

.qr-design-acc__label {
    flex: 1;
    letter-spacing: .02em;
}

.qr-design-acc__toggle {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    line-height: 1;
    font-weight: 300;
    flex-shrink: 0;
    transition: transform .2s;
}

.qr-design-acc__item--open .qr-design-acc__toggle {
    transform: rotate(45deg);
}

.qr-design-acc__body {
    display: none;
    padding: var(--sp-4);
    border-top: 1px solid var(--color-border);
    animation: fadeIn .25s ease;
}

.qr-design-acc__item--open .qr-design-acc__body {
    display: block;
}

/* Shape pickers */
.qr-shape-section {
    margin-bottom: var(--sp-5);
}

.qr-shape-section:last-child {
    margin-bottom: 0;
}

.qr-shape-section__title {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-muted);
    margin-bottom: var(--sp-3);
    text-transform: uppercase;
    letter-spacing: .04em;
}

.qr-shape-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(52px, 1fr));
    gap: var(--sp-2);
}

.qr-shape-btn {
    aspect-ratio: 1;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background: #fff;
    cursor: pointer;
    padding: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color .15s, box-shadow .15s, transform .1s;
    position: relative;
}

.qr-shape-btn:hover {
    border-color: var(--color-primary);
    box-shadow: 0 2px 8px rgba(59, 187, 110, .2);
}

.qr-shape-btn--active {
    border-color: var(--color-primary);
    background: #ecfdf3;
    box-shadow: 0 0 0 2px rgba(59, 187, 110, .25);
}

.qr-shape-btn canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.qr-shape-btn__tip {
    position: absolute;
    bottom: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%);
    background: #111;
    color: #fff;
    font-size: 11px;
    padding: 3px 8px;
    border-radius: 4px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity .15s;
    z-index: 5;
}

.qr-shape-btn:hover .qr-shape-btn__tip {
    opacity: 1;
}

/* Logo upload */
.qr-logo-upload {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--sp-6);
    text-align: center;
    cursor: pointer;
    transition: border-color .2s, background .2s;
    position: relative;
}

.qr-logo-upload:hover,
.qr-logo-upload--drag {
    border-color: var(--color-primary);
    background: #f0fdf4;
}

.qr-logo-upload input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
    z-index: 2;
}

.qr-logo-upload__icon {
    font-size: 32px;
    margin-bottom: var(--sp-2);
    opacity: .6;
}

.qr-logo-upload__text {
    font-size: var(--font-size-sm);
    color: var(--color-muted);
}

.qr-logo-preview {
    display: flex;
    align-items: center;
    gap: var(--sp-4);
    margin-top: var(--sp-3);
}

.qr-logo-preview img {
    width: 64px;
    height: 64px;
    object-fit: contain;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: #fff;
    padding: 4px;
}

.qr-logo-preview__remove {
    font-size: var(--font-size-sm);
    color: var(--color-danger, #dc2626);
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    text-decoration: underline;
}

/* Color presets */
.qr-color-presets {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-2);
    margin-bottom: var(--sp-4);
}

.qr-color-preset {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid #fff;
    box-shadow: 0 0 0 1px var(--color-border);
    cursor: pointer;
    transition: transform .15s, box-shadow .15s;
}

.qr-color-preset:hover {
    transform: scale(1.1);
}

.qr-color-preset--active {
    box-shadow: 0 0 0 2px var(--color-primary);
}

/* Preview panel */
.qr-studio__preview {
    padding: var(--sp-6) var(--sp-5);
    background: linear-gradient(180deg, #fafbfc 0%, #f3f4f6 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    position: sticky;
    top: calc(var(--nav-height, 64px) + var(--sp-4));
    align-self: start;
}

.qr-studio-preview {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--sp-4);
}

.qr-studio-preview__frame {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: var(--sp-5);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
    min-height: 260px;
    min-width: 260px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-studio-preview__frame canvas,
.qr-studio-preview__frame img {
    max-width: 220px;
    max-height: 220px;
    width: auto;
    height: auto;
    display: block;
}

.qr-studio-preview__placeholder {
    text-align: center;
    color: var(--color-muted);
    padding: var(--sp-6);
}

.qr-studio-preview__placeholder svg {
    opacity: .25;
    margin-bottom: var(--sp-3);
}

/* Quality slider */
.qr-quality {
    width: 100%;
    padding: 0 var(--sp-2);
}

.qr-quality__labels {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    color: var(--color-muted);
    margin-bottom: var(--sp-1);
}

.qr-quality__value {
    text-align: center;
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-primary);
    margin-top: var(--sp-2);
}

.qr-quality input[type="range"] {
    width: 100%;
    accent-color: var(--color-primary);
    height: 6px;
}

/* Action buttons */
.qr-studio-actions {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: var(--sp-3);
}

.qr-studio-actions .btn--create {
    background: var(--color-primary);
    color: #fff;
    font-size: var(--font-size-lg);
    font-weight: 700;
    padding: var(--sp-4);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 14px rgba(59, 187, 110, .35);
}

.qr-studio-actions .btn--create:hover {
    filter: brightness(1.05);
}

.qr-studio-actions .btn--download-png {
    background: #38bdf8;
    color: #fff;
    font-weight: 700;
    padding: var(--sp-3);
    border-radius: var(--radius-lg);
    border: none;
}

.qr-studio-actions .btn--download-png:disabled {
    opacity: .5;
    cursor: not-allowed;
}

.qr-studio-formats {
    display: flex;
    gap: var(--sp-2);
    width: 100%;
}

.qr-studio-formats .btn {
    flex: 1;
    font-size: var(--font-size-xs);
    padding: var(--sp-2);
}

.qr-studio-formats__note {
    font-size: 11px;
    color: var(--color-muted);
    text-align: center;
    width: 100%;
}

.qr-studio-meta {
    margin-top: var(--sp-4);
    padding-top: var(--sp-4);
    border-top: 1px solid var(--color-border);
}

/* Panels inside accordion */
.qr-design-acc .qr-panel {
    display: none;
    flex-direction: column;
    gap: var(--sp-4);
}

.qr-design-acc .qr-panel--active {
    display: flex;
}

.qr-design-acc .qr-panel[hidden] {
    display: none !important;
}

/* Loading overlay on preview */
.qr-studio-preview__loading {
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,.85);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    z-index: 3;
}

.qr-studio-preview__loading[hidden] {
    display: none !important;
}

.qr-studio-preview__frame {
    position: relative;
}

/* Pick buttons (body / frame / watermark) */
.qr-pick-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.qr-pick-grid .qr-pick-btn {
    flex: 1 1 calc(20% - 10px);
    min-width: 56px;
}

.qr-pick-btn {
    text-align: center;
    background: #fff;
    border: 2px solid #ddd;
    border-radius: var(--radius-md);
    padding: 10px;
    cursor: pointer;
    color: #111827;
    transition: border-color .15s, box-shadow .15s;
}

.qr-pick-btn:hover {
    border-color: var(--color-primary);
}

.qr-pick-btn--active {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(59, 187, 110, .25);
}

.qr-pick-btn__img {
    display: block;
    margin: 0 auto;
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.qr-pick-btn__img--frame {
    height: 48px;
    width: auto;
    max-width: 48px;
}

.qr-frame-row {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    width: 100%;
    padding-bottom: 4px;
}

.qr-frame-row .qr-pick-btn {
    flex: 0 0 64px;
    width: 64px;
    min-width: 64px;
    padding: 8px;
}

@media (max-width: 960px) {
    .qr-studio__grid {
        grid-template-columns: 1fr;
    }

    .qr-studio__config {
        border-left: none;
        border-bottom: 1px solid var(--color-border);
    }

    .qr-studio__preview {
        position: static;
    }
}