/* Form controls, preview, buttons, and notices. */
.panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    backdrop-filter: blur(16px);
}
.panel-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 16px;
}

/* Section divider within panel */
.section-divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 20px 0 16px;
}

.field { margin-bottom: 16px; }
.field label {
    display: block;
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 6px;
    font-weight: 500;
}
.field input[type="text"],
.field input[type="number"],
.field select,
.field textarea {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border-strong);
    border-radius: 8px;
    color: var(--text);
    padding: 9px 12px;
    font-size: 0.88rem;
    font-family: inherit;
    transition: border-color 0.2s;
    outline: none;
}
.field textarea { min-height: 72px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
    border-color: var(--accent);
}

.color-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.color-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
.color-input-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg);
    border: 1px solid var(--border-strong);
    border-radius: 8px;
    padding: 6px 10px;
}
.color-input-wrap input[type="color"] {
    width: 28px; height: 28px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    background: none;
    padding: 0;
}
.color-input-wrap input[type="text"] {
    flex: 1;
    background: none;
    border: none;
    color: var(--text);
    font-size: 0.85rem;
    padding: 0;
    outline: none;
}

.size-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.three-col { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }

.slider-row { display: flex; align-items: center; gap: 10px; }
.slider-row input[type="range"] {
    flex: 1;
    accent-color: var(--accent);
    cursor: pointer;
}
.slider-val {
    min-width: 32px;
    text-align: right;
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 600;
}

/* Transparent bg toggle */
.checkbox-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 6px;
}
.checkbox-row input[type="checkbox"] {
    accent-color: var(--accent);
    width: 16px; height: 16px;
    cursor: pointer;
}
.checkbox-row label {
    font-size: 0.8rem;
    color: var(--text-muted);
    cursor: pointer;
    margin: 0;
}

/* Content type dynamic fields */
#contentTypeFields .field:last-child { margin-bottom: 0; }

/* Logo upload */
.logo-drop {
    border: 2px dashed var(--border-strong);
    border-radius: 10px;
    padding: 16px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
}
.logo-drop:hover, .logo-drop.drag-over {
    border-color: var(--accent);
    background: var(--accent-soft);
}
.logo-drop i { font-size: 1.3rem; color: var(--text-muted); margin-bottom: 6px; }
.logo-drop p { font-size: 0.8rem; color: var(--text-muted); }
.logo-drop small { font-size: 0.72rem; color: var(--text-muted); }
.logo-preview-wrap { display: flex; align-items: center; gap: 10px; margin-top: 10px; }
.logo-preview-wrap img { width: 40px; height: 40px; object-fit: contain; border-radius: 6px; background: white; padding: 2px; }
.logo-remove {
    background: var(--danger-soft);
    border: 1px solid var(--danger);
    color: var(--danger);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    cursor: pointer;
    font-family: inherit;
}

.btn-generate {
    width: 100%;
    padding: 14px;
    background: var(--accent);
    color: var(--accent-contrast);
    border: none;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    font-family: inherit;
    margin-top: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.btn-generate:hover { background: var(--accent-hover); }
.btn-generate:active { transform: scale(0.98); }
.btn-generate:disabled { opacity: 0.5; cursor: not-allowed; }

/* Desktop: the whole preview column follows the user while they scroll settings */
.presets { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.preset {
    display: inline-flex; align-items: center; gap: 7px;
    background: var(--bg);
    border: 1px solid var(--border-strong);
    color: var(--text);
    padding: 7px 12px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-family: inherit;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
}
.preset:hover { border-color: var(--accent); background: var(--accent-soft); }
.preset:focus-visible, .btn-generate:focus-visible, .btn-action:focus-visible {
    outline: 2px solid var(--accent); outline-offset: 2px;
}
.preset-dot { width: 14px; height: 14px; border-radius: 50%; border: 1px solid var(--border-strong); }

.scan-hint {
    font-size: 0.75rem;
    line-height: 1.4;
    padding: 8px 12px;
    border-radius: 10px;
    display: none;
    align-items: flex-start;
    gap: 8px;
}
.scan-hint.show { display: flex; }
.scan-hint.warn { background: var(--warn-soft); border: 1px solid var(--warn); color: var(--warn); }
.scan-hint.ok { background: var(--success-soft); border: 1px solid var(--success); color: var(--success); }
.scan-hint i { margin-top: 2px; }
.qr-meta {
    position: absolute; right: 14px; bottom: 8px;
    font-size: 0.7rem; color: var(--text-muted);
}

.qr-display {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 320px;
    position: relative;
}
.qr-display img {
    max-width: 100%;
    max-height: min(420px, 48vh);
    border-radius: 8px;
    display: block;
    transition: opacity 0.2s, filter 0.2s;
}
/* Keep the previous QR visible (dimmed) while the next one loads */
.qr-display.loading img { opacity: 0.35; filter: blur(2px); }
.qr-display.loading .spinner { display: block; }
.qr-display .spinner {
    position: absolute;
    top: 50%; left: 50%;
    margin: -20px 0 0 -20px;
}
.qr-display.updated img { animation: qr-pop 0.35s ease-out; }
@keyframes qr-pop {
    from { transform: scale(0.96); opacity: 0.6; }
    to   { transform: scale(1); opacity: 1; }
}
@media (prefers-reduced-motion: reduce) {
    .qr-display.updated img { animation: none; }
}
.qr-placeholder {
    text-align: center;
    color: var(--text-muted);
}
.qr-placeholder i { font-size: 3rem; opacity: 0.3; display: block; margin-bottom: 12px; }
.qr-placeholder p { font-size: 0.88rem; }

.spinner {
    width: 40px; height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    display: none;
}
@keyframes spin { to { transform: rotate(360deg); } }

.action-row { display: flex; gap: 10px; flex-wrap: wrap; }
.btn-action {
    flex: 1;
    min-width: 120px;
    padding: 10px 16px;
    border-radius: 9px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    font-family: inherit;
    border: 1.5px solid;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    transition: all 0.2s;
    text-decoration: none;
}
.btn-download {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--accent-contrast);
}
.btn-download:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-copy {
    background: var(--surface-2);
    border-color: var(--border-strong);
    color: var(--text);
}
.btn-copy:hover { border-color: var(--accent); }
.btn-action:disabled { opacity: 0.4; cursor: not-allowed; }

.api-url-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
}
.api-url-box .box-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 8px;
    font-weight: 600;
}
.url-display {
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--text);
    word-break: break-all;
    line-height: 1.6;
    background: var(--bg);
    padding: 10px 12px;
    border-radius: 8px;
    max-height: 120px;
    overflow-y: auto;
}
.copy-url-btn {
    margin-top: 10px;
    background: var(--bg);
    border: 1px solid var(--border-strong);
    color: var(--text-muted);
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 0.78rem;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.2s;
}
.copy-url-btn:hover { border-color: var(--accent); color: var(--accent); }

.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
}
.spec-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}
.spec-icon {
    width: 36px; height: 36px;
    background: var(--accent-soft);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    flex-shrink: 0;
}
.spec-card h4 { font-size: 0.82rem; font-weight: 600; margin-bottom: 3px; }
.spec-card p { font-size: 0.75rem; color: var(--text-muted); line-height: 1.4; }

.footer-note {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.78rem;
    margin-top: 32px;
    padding-bottom: 24px;
}
.footer-note a { color: var(--accent); text-decoration: none; }
.footer-note a:hover { text-decoration: underline; }

.error-msg {
    background: var(--danger-soft);
    border: 1px solid var(--danger);
    color: var(--danger);
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 0.82rem;
    display: none;
    margin-top: 12px;
}

.section-gap { margin-top: 32px; }

/* Collapsible section */
.collapsible-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    user-select: none;
    padding: 4px 0;
}
.collapsible-header:hover .collapse-arrow { color: var(--text); }
.collapse-arrow {
    color: var(--text-muted);
    font-size: 0.75rem;
    transition: transform 0.2s;
}
.collapse-arrow.open { transform: rotate(180deg); }
.collapsible-body { display: none; margin-top: 14px; }
.collapsible-body.open { display: block; }