/* Verification banner */
.verify-banner { background: #fef9c3; border-bottom: 1px solid #fde047; padding: 8px 16px; font-size: .83rem; color: #713f12; display: none; text-align: center; }
.verify-banner a { color: #92400e; font-weight: 600; text-decoration: underline; cursor: pointer; }

        :root {
            --accent: #2563eb;
            --accent-dark: #1d4ed8;
            --accent-light: #dbeafe;
            --surface: #f8fafc;
            --border: #e2e8f0;
            --text: #0f172a;
            --text-muted: #64748b;
            --radius: 12px;
            --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 4px 16px rgba(0,0,0,0.06);
            --shadow-lg: 0 4px 24px rgba(37,99,235,0.15);
        }
        * { box-sizing: border-box; }
        body {
            font-family: 'Inter', sans-serif;
            background: var(--surface);
            color: var(--text);
            min-height: 100vh;
        }
        /* Header */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 8px rgba(0,0,0,0.06);
        }
        .site-header .logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--accent);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-header .logo .logo-icon {
            width: 34px; height: 34px;
            background: var(--accent);
            border-radius: 8px;
            display: flex; align-items: center; justify-content: center;
        }
        .site-header .logo .logo-icon svg { fill: white; }
        .header-tagline { font-size: 0.8rem; color: var(--text-muted); margin-top: 1px; }

        /* Main layout */
        .main-wrap { padding: 28px 0 60px; }

        /* Cards */
        .card-panel {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
        }
        .panel-header {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border);
            font-weight: 600;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 8px;
            background: #fafbff;
        }
        .panel-header .panel-icon {
            width: 28px; height: 28px;
            background: var(--accent-light);
            border-radius: 7px;
            display: flex; align-items: center; justify-content: center;
            color: var(--accent);
            font-size: 14px;
        }
        .panel-body { padding: 20px; }

        /* QR Type Selector */
        .qr-type-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 6px;
        }
        @media (max-width: 480px) { .qr-type-grid { grid-template-columns: repeat(3, 1fr); } }
        .qr-type-btn {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
            padding: 10px 6px;
            border: 1.5px solid var(--border);
            border-radius: 10px;
            background: #fff;
            cursor: pointer;
            font-size: 0.7rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: all 0.18s;
            text-align: center;
            line-height: 1.2;
        }
        .qr-type-btn .type-emoji { font-size: 1.3rem; line-height: 1; }
        .qr-type-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-light); }
        .qr-type-btn.active {
            border-color: var(--accent);
            background: var(--accent);
            color: #fff;
            box-shadow: 0 2px 8px rgba(37,99,235,0.3);
        }

        /* Form sections */
        .form-section { margin-bottom: 20px; }
        .form-section-title {
            font-size: 0.78rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--text-muted);
            margin-bottom: 10px;
            padding-bottom: 6px;
            border-bottom: 1px solid var(--border);
        }
        .form-label { font-size: 0.85rem; font-weight: 500; margin-bottom: 4px; color: #334155; }
        .form-control, .form-select {
            border: 1.5px solid var(--border);
            border-radius: 8px;
            padding: 9px 12px;
            font-size: 0.875rem;
            transition: border-color 0.18s, box-shadow 0.18s;
            font-family: 'Inter', sans-serif;
        }
        .form-control:focus, .form-select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
            outline: none;
        }
        textarea.form-control { resize: vertical; min-height: 90px; }

        /* Style buttons */
        .style-btn-group { display: flex; flex-wrap: wrap; gap: 6px; }
        .style-btn {
            display: flex; flex-direction: column; align-items: center; gap: 4px;
            padding: 8px 10px;
            border: 1.5px solid var(--border);
            border-radius: 8px;
            background: #fff;
            cursor: pointer;
            font-size: 0.7rem;
            color: var(--text-muted);
            font-weight: 500;
            transition: all 0.18s;
            min-width: 62px;
        }
        .style-btn svg { width: 28px; height: 28px; }
        .style-btn:hover { border-color: var(--accent); color: var(--accent); }
        .style-btn.active { border-color: var(--accent); background: var(--accent); color: #fff; }
        .style-btn.active svg { fill: #fff; }
        .style-btn svg { fill: currentColor; }

        /* Color pickers */
        .color-row { display: flex; align-items: center; gap: 10px; }
        .color-swatch-wrap {
            position: relative;
            width: 42px; height: 42px;
            border-radius: 8px;
            border: 1.5px solid var(--border);
            overflow: hidden;
            cursor: pointer;
            flex-shrink: 0;
        }
        .color-swatch-wrap input[type=color] {
            position: absolute;
            width: 200%; height: 200%;
            top: -25%; left: -25%;
            border: none;
            padding: 0;
            cursor: pointer;
            background: none;
        }
        .color-text-input {
            flex: 1;
            font-family: 'Inter', monospace;
            font-size: 0.875rem;
        }

        /* Logo upload */
        .logo-drop-area {
            border: 2px dashed var(--border);
            border-radius: 10px;
            padding: 20px;
            text-align: center;
            cursor: pointer;
            transition: all 0.18s;
            background: #fafbff;
            position: relative;
        }
        .logo-drop-area:hover, .logo-drop-area.drag-over {
            border-color: var(--accent);
            background: var(--accent-light);
        }
        .logo-drop-area input[type=file] {
            position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%;
        }
        .logo-drop-area .drop-icon { font-size: 2rem; color: var(--text-muted); margin-bottom: 6px; }
        .logo-drop-area .drop-text { font-size: 0.8rem; color: var(--text-muted); }
        .logo-preview-wrap {
            display: none;
            align-items: center;
            gap: 12px;
            padding: 10px;
            border: 1.5px solid var(--border);
            border-radius: 10px;
            background: #fafbff;
        }
        .logo-preview-wrap img { width: 48px; height: 48px; object-fit: contain; border-radius: 6px; }
        .logo-preview-wrap .logo-name { font-size: 0.8rem; color: var(--text); flex: 1; word-break: break-all; }
        .logo-preview-wrap .btn-remove-logo {
            background: none; border: none; color: #ef4444;
            font-size: 1.1rem; cursor: pointer; padding: 2px 6px; border-radius: 6px;
        }
        .logo-preview-wrap .btn-remove-logo:hover { background: #fee2e2; }

        /* Themes */
        .themes-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 8px;
        }
        .theme-btn {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 5px;
            padding: 8px 4px 6px;
            border-radius: 12px;
            border: 2px solid #e2e8f0;
            background: #fff;
            cursor: pointer;
            transition: all 0.18s;
        }
        .theme-btn svg {
            width: 54px;
            height: 54px;
            border-radius: 6px;
            display: block;
            box-shadow: 0 1px 4px rgba(0,0,0,0.12);
        }
        .theme-btn span {
            font-size: 0.62rem;
            font-weight: 600;
            color: var(--text);
            text-align: center;
            line-height: 1.1;
        }
        .theme-btn:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(99,102,241,0.15); }
        .theme-btn.active { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(99,102,241,0.2); transform: translateY(-2px); }

        /* Preview panel */
        .preview-card {
            position: sticky;
            top: 76px;
        }
        .qr-preview-wrap {
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 320px;
            padding: 24px;
            background: linear-gradient(135deg, #f0f7ff 0%, #e8f4fd 100%);
            border-bottom: 1px solid var(--border);
        }
        #qr-canvas-wrap {
            background: white;
            border-radius: 12px;
            box-shadow: 0 4px 24px rgba(0,0,0,0.12);
            overflow: hidden;
            display: inline-block;
        }
        #qr-canvas-wrap canvas, #qr-canvas-wrap svg {
            display: block;
        }
        .qr-placeholder {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 10px;
            color: var(--text-muted);
            font-size: 0.85rem;
            width: 300px; height: 300px;
        }
        .qr-placeholder .ph-icon {
            font-size: 4rem;
            color: #cbd5e1;
        }

        /* Buttons */
        .btn-generate {
            background: var(--accent);
            color: white;
            border: none;
            border-radius: 10px;
            padding: 13px 28px;
            font-weight: 600;
            font-size: 1rem;
            width: 100%;
            cursor: pointer;
            transition: all 0.18s;
            display: flex; align-items: center; justify-content: center; gap: 8px;
        }
        .btn-generate:hover { background: var(--accent-dark); box-shadow: var(--shadow-lg); transform: translateY(-1px); }
        .btn-generate:active { transform: none; }

        .btn-download {
            border-radius: 8px;
            padding: 9px 16px;
            font-weight: 500;
            font-size: 0.875rem;
            cursor: pointer;
            transition: all 0.18s;
            display: flex; align-items: center; gap: 6px;
            flex: 1;
            justify-content: center;
        }
        .btn-dl-png {
            background: var(--accent);
            color: white;
            border: none;
        }
        .btn-dl-png:hover { background: var(--accent-dark); }
        .btn-dl-svg {
            background: #fff;
            color: var(--accent);
            border: 1.5px solid var(--accent);
        }
        .btn-dl-svg:hover { background: var(--accent-light); }

        .size-select {
            border: 1.5px solid var(--border);
            border-radius: 8px;
            padding: 9px 10px;
            font-size: 0.85rem;
            font-family: 'Inter', sans-serif;
        }

        /* Share */
        .share-wrap {
            display: flex; align-items: center; gap: 8px;
            padding: 10px 14px;
            background: var(--surface);
            border-radius: 8px;
            border: 1px solid var(--border);
        }
        .share-url {
            flex: 1;
            font-size: 0.78rem;
            color: var(--text-muted);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .btn-copy {
            background: none;
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 4px 10px;
            font-size: 0.78rem;
            font-weight: 500;
            color: var(--accent);
            cursor: pointer;
            transition: all 0.15s;
            white-space: nowrap;
        }
        .btn-copy:hover { background: var(--accent-light); border-color: var(--accent); }
        .btn-copy.copied { background: #dcfce7; border-color: #16a34a; color: #16a34a; }

        /* Toast */
        .toast-wrap {
            position: fixed;
            bottom: 24px; left: 50%;
            transform: translateX(-50%);
            z-index: 9999;
            pointer-events: none;
        }
        .toast-msg {
            background: #1e293b;
            color: #fff;
            padding: 10px 20px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            box-shadow: 0 4px 20px rgba(0,0,0,0.25);
            opacity: 0;
            transform: translateY(10px);
            transition: all 0.3s;
            white-space: nowrap;
        }
        .toast-msg.show { opacity: 1; transform: translateY(0); }

        /* Range slider */
        .form-range::-webkit-slider-thumb { background: var(--accent); }
        .form-range::-webkit-slider-runnable-track { background: var(--border); }
        .range-val { font-size: 0.8rem; font-weight: 600; color: var(--accent); min-width: 32px; text-align: right; }

        /* Responsive */
        @media (max-width: 991px) {
            .preview-card { position: static; }
            .qr-preview-wrap { min-height: 260px; }
        }

        /* Footer */
        .site-footer {
            background: #1e293b;
            color: #94a3b8;
            text-align: center;
            padding: 24px;
            font-size: 0.82rem;
        }
        .site-footer a { color: #60a5fa; text-decoration: none; }

        /* Dot style icons */
        .dot-svg { display: inline-block; width: 28px; height: 28px; }

        /* Corner style btns */
        .corner-row { display: flex; gap: 6px; flex-wrap: wrap; }
        .corner-btn {
            padding: 6px 12px;
            border: 1.5px solid var(--border);
            border-radius: 7px;
            background: #fff;
            font-size: 0.75rem;
            font-weight: 500;
            color: var(--text-muted);
            cursor: pointer;
            transition: all 0.15s;
        }
        .corner-btn:hover { border-color: var(--accent); color: var(--accent); }
        .corner-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

        /* Input field type panels */
        .qr-fields { display: none; }
        .qr-fields.active { display: block; }

        .section-divider {
            height: 1px; background: var(--border); margin: 4px 0 16px;
        }

        .accordion-cust .accordion-button {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text);
            background: #fafbff;
            padding: 12px 16px;
        }
        .accordion-cust .accordion-button:not(.collapsed) {
            background: var(--accent-light);
            color: var(--accent);
            box-shadow: none;
        }
        .accordion-cust .accordion-body { padding: 16px; }
        .accordion-cust .accordion-item { border-color: var(--border); }

        /* ── Frames ─────────────────────────────────────────── */
        #frame-outer {
            display: inline-flex;
            flex-direction: column;
            align-items: center;
            transition: all 0.2s;
        }
        .frame-label {
            width: 100%;
            text-align: center;
            font-weight: 700;
            font-size: 0.85rem;
            padding: 7px 12px;
            letter-spacing: 0.03em;
        }
        .builtin-logos-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 6px;
            margin-bottom: 10px;
        }
        .builtin-logo-btn {
            width: 100%; aspect-ratio: 1; border-radius: 50%;
            border: 2px solid transparent;
            cursor: pointer; transition: all 0.15s;
            display: flex; align-items: center; justify-content: center;
            padding: 0; overflow: hidden;
        }
        .builtin-logo-btn:hover { transform: scale(1.12); }
        .builtin-logo-btn.active { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(99,102,241,0.3); }
        .builtin-logo-btn.loading { opacity: 0.5; pointer-events: none; }
        .frame-type-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 6px;
            margin-bottom: 12px;
        }
        .frame-type-btn {
            background: #f1f5f9;
            border: 2px solid transparent;
            border-radius: 8px;
            padding: 7px 4px;
            font-size: 0.75rem;
            font-weight: 500;
            cursor: pointer;
            text-align: center;
            color: var(--text);
            transition: all 0.15s;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
        }
        .frame-type-btn:hover { background: #e2e8f0; }
        .frame-type-btn.active { border-color: var(--accent); background: #eff6ff; color: var(--accent); }
        .frame-type-btn .ft-icon { font-size: 1.2rem; }

        /* ── PDF button ─────────────────────────────────────── */
        .btn-dl-pdf {
            background: linear-gradient(135deg, #e53e3e, #c53030) !important;
        }
        .btn-dl-pdf:hover { background: linear-gradient(135deg, #c53030, #9b2c2c) !important; }

        /* ── Scanner Section ─────────────────────────────────── */
        .scanner-section {
            max-width: 900px;
            margin: 0 auto 40px;
            padding: 0 16px;
        }
        .scanner-toggle-btn {
            background: none; border: none; width: 100%; text-align: left;
            display: flex; align-items: center; gap: 10px;
            cursor: pointer; padding: 0;
        }
        #scanner-video {
            width: 100%; max-width: 480px; border-radius: 10px;
            display: block; margin: 0 auto;
            background: #000;
        }
        .scan-result-box {
            background: #f0fdf4; border: 1px solid #86efac;
            border-radius: 10px; padding: 14px 16px; margin-top: 14px;
            word-break: break-all;
        }
        .scan-result-box a { color: var(--accent); }
        .scanner-drop-area {
            border: 2px dashed #cbd5e1; border-radius: 12px;
            padding: 32px; text-align: center; cursor: pointer;
            transition: all 0.2s; color: var(--text-muted);
        }
        .scanner-drop-area:hover, .scanner-drop-area.drag-over {
            border-color: var(--accent); background: #eff6ff; color: var(--accent);
        }
        #scanner-file-canvas { display: none; }

        /* ── Cookie Consent ─────────────────────────────────── */
        #cookie-banner {
            position: fixed;
            bottom: 0; left: 0; right: 0;
            z-index: 9999;
            background: #1e293b;
            color: #e2e8f0;
            padding: 16px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            box-shadow: 0 -4px 24px rgba(0,0,0,0.25);
            transform: translateY(100%);
            transition: transform 0.35s cubic-bezier(.4,0,.2,1);
        }
        #cookie-banner.visible {
            transform: translateY(0);
        }
        #cookie-banner .cookie-text {
            font-size: 0.85rem;
            line-height: 1.55;
            flex: 1;
            min-width: 220px;
        }
        #cookie-banner .cookie-text a {
            color: #60a5fa;
            text-decoration: underline;
        }
        #cookie-banner .cookie-actions {
            display: flex;
            gap: 10px;
            flex-shrink: 0;
        }
        #cookie-accept {
            background: #2563eb;
            color: #fff;
            border: none;
            border-radius: 8px;
            padding: 9px 22px;
            font-size: 0.88rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.15s;
            white-space: nowrap;
        }
        #cookie-accept:hover { background: #1d4ed8; }
        #cookie-decline {
            background: transparent;
            color: #94a3b8;
            border: 1px solid #475569;
            border-radius: 8px;
            padding: 9px 18px;
            font-size: 0.88rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.15s;
            white-space: nowrap;
        }
        #cookie-decline:hover { color: #e2e8f0; border-color: #94a3b8; }

        /* ── Dark Theme ─────────────────────────────────────── */
        html.dark {
            --accent: #60a5fa;
            --accent-dark: #3b82f6;
            --accent-light: #1e3a5f;
            --surface: #0f172a;
            --border: #1e293b;
            --text: #e2e8f0;
            --text-muted: #94a3b8;
            --shadow: 0 1px 3px rgba(0,0,0,0.3), 0 4px 16px rgba(0,0,0,0.2);
            --shadow-lg: 0 4px 24px rgba(0,0,0,0.4);
        }
        html.dark body { background: #0f172a; color: #e2e8f0; }
        /* Override CSS variables for dark mode */
        html.dark {
            --text: #e2e8f0;
            --text-muted: #94a3b8;
            --surface: #1e293b;
            --border: #334155;
            --shadow: 0 1px 3px rgba(0,0,0,0.3), 0 4px 16px rgba(0,0,0,0.25);
        }
        html.dark .card-panel,
        html.dark .qr-type-btn,
        html.dark .frame-type-btn,
        html.dark .style-btn,
        html.dark .accordion-item,
        html.dark .form-control,
        html.dark .form-select,
        html.dark .size-select,
        html.dark .input-group-text { background: #1e293b !important; color: #e2e8f0 !important; border-color: #334155 !important; }

        /* ── Auth dropdown dark ─────────────────────────────── */

        /* ── UTM panel ─────────────────────────────────────────── */
        html.dark #utm-panel { background: #1e293b; border-color: #334155; }
        html.dark #utm-preview { background: #0f172a; border-color: #334155; }
        html.dark #auth-dropdown { background:#1e293b !important; border-color:#334155 !important; }
        html.dark #auth-dropdown a, html.dark #auth-dropdown button { color:#e2e8f0 !important; }
        html.dark #auth-dropdown a:hover, html.dark #auth-dropdown button:hover { background:#334155 !important; }
        html.dark .site-header { background: #0f172a; border-color: #1e293b; }
        html.dark .site-footer { background: #0f172a; border-color: #1e293b; }
        html.dark .footer-nav a { color: #94a3b8 !important; }
        html.dark .footer-nav a:hover { color: #e2e8f0 !important; }
        html.dark .footer-copy { color: #cbd5e1 !important; }
        html.dark .footer-note { color: #94a3b8 !important; }
        html.dark .verify-banner { background: #1e3a5f; color: #93c5fd; border-color: #1e4d8c; }
        html.dark .verify-banner a { color: #60a5fa !important; }
        html.dark .qr-type-btn.active { background: var(--accent-light) !important; color: var(--accent) !important; }
        html.dark .style-btn.active,
        html.dark .frame-type-btn.active { border-color: var(--accent) !important; background: #1e3a5f !important; color: var(--accent) !important; }
        /* Dark mode label/header hierarchy */
        html.dark .panel-header { color: #94a3b8 !important; background: #1e293b !important; }
        html.dark .form-section-title { color: #7b8fa1 !important; border-color: #334155 !important; }
        html.dark .form-label { color: #94a3b8 !important; }
        html.dark .text-muted,
        html.dark .form-text,
        html.dark small,
        html.dark .small { color: #94a3b8 !important; }
        html.dark p { color: #cbd5e1 !important; }
        html.dark li { color: #cbd5e1 !important; }
        html.dark h1, html.dark h2, html.dark h3 { color: #e2e8f0 !important; }
        html.dark h4, html.dark h5, html.dark h6 { color: #cbd5e1 !important; }
        html.dark .text-secondary { color: #7b8fa1 !important; }
        html.dark .alert-info { background: #1e3a5f; border-color: #1e4d8c; color: #93c5fd; }
        html.dark .btn-dl-svg { background: #1e293b !important; color: #60a5fa !important; border-color: #60a5fa !important; }
        html.dark .builtin-logo-btn { border-color: #334155; }
        html.dark .qr-placeholder { background: #1e293b; color: #64748b; }
        html.dark .accordion-button { color: #e2e8f0 !important; background: #1e293b !important; }
        html.dark .accordion-button::after { filter: invert(1); }
        html.dark .accordion-button:not(.collapsed) { color: #93c5fd !important; background: #1e3a5f !important; }
        html.dark #faq-section { background: #0f172a !important; border-color: #1e293b !important; }
        html.dark .accordion-body { color: #cbd5e1 !important; }
        html.dark .accordion-body code { background: #1e293b !important; border-color: #334155 !important; color: #93c5fd !important; }
        html.dark .accordion-item { box-shadow: 0 1px 4px rgba(0,0,0,0.4) !important; }
        html.dark .nav-tabs .nav-link { color: #94a3b8; }
        html.dark .nav-tabs .nav-link.active { color: #e2e8f0 !important; background: #1e293b !important; border-color: #334155 #334155 #1e293b !important; }
        html.dark .nav-tabs { border-color: #334155; }
        html.dark .modal-content { background: #1e293b !important; color: #e2e8f0 !important; border-color: #334155 !important; }
        html.dark .modal-header { border-color: #334155 !important; }
        html.dark .modal-footer { border-color: #334155 !important; }
        html.dark .dropdown-menu { background: #1e293b !important; border-color: #334155 !important; }
        html.dark .dropdown-item { color: #e2e8f0 !important; }
        html.dark .dropdown-item:hover { background: #334155 !important; }
        html.dark .badge.bg-secondary { background: #334155 !important; color: #94a3b8 !important; }
        html.dark .input-group-text { color: #94a3b8 !important; }
        html.dark ::placeholder { color: #64748b !important; opacity: 1; }
        html.dark #frame-outer { background: transparent; }

        /* Theme toggle button */
        .theme-toggle {
            background: none; border: none; cursor: pointer;
            color: var(--text-muted); font-size: 1.2rem;
            padding: 6px 10px; border-radius: 8px;
            transition: all 0.15s; line-height: 1;
        }
        .theme-toggle:hover { background: var(--border); color: var(--text); }


        /* Copy / Share buttons */
        .btn-copy-qr, .btn-share-qr {
            width: 100%; padding: 9px 14px;
            border: 1.5px solid var(--border);
            border-radius: 8px; background: none;
            color: var(--text-muted); font-size: 0.85rem;
            font-weight: 500; cursor: pointer;
            display: flex; align-items: center; justify-content: center;
            gap: 6px; transition: all 0.15s; font-family: inherit;
        }
        .btn-copy-qr:hover, .btn-share-qr:hover {
            border-color: var(--accent); color: var(--accent);
            background: var(--accent-light);
        }

        /* ── QR History ───────────────────────────────────── */
        #qr-history-strip {
            padding: 14px 16px;
            border-top: 1px solid var(--border);
        }
        .hist-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 10px;
            font-size: 0.72rem;
            font-weight: 700;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.06em;
        }
        .hist-clear {
            background: none;
            border: none;
            color: var(--text-secondary);
            font-size: 0.72rem;
            cursor: pointer;
            padding: 2px 8px;
            border-radius: 4px;
            transition: all 0.15s;
        }
        .hist-clear:hover { color: #ef4444; background: rgba(239,68,68,0.08); }
        .hist-items {
            display: flex;
            gap: 8px;
            overflow-x: auto;
            padding-bottom: 4px;
            scrollbar-width: thin;
        }
        .hist-items::-webkit-scrollbar { height: 4px; }
        .hist-items::-webkit-scrollbar-track { background: transparent; }
        .hist-items::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
        .hist-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            cursor: pointer;
            padding: 6px;
            border-radius: 8px;
            border: 2px solid transparent;
            transition: border-color 0.15s, background 0.15s;
            min-width: 74px;
            flex-shrink: 0;
        }
        .hist-item:hover  { border-color: var(--accent); background: rgba(37,99,235,0.06); }
        .hist-item.active { border-color: var(--accent); }
        .hist-thumb {
            width: 60px;
            height: 60px;
            border-radius: 6px;
            object-fit: contain;
            background: #fff;
            border: 1px solid var(--border);
            display: block;
        }
        .hist-label {
            font-size: 0.68rem;
            font-weight: 600;
            color: var(--text-primary);
            white-space: nowrap;
            max-width: 70px;
            overflow: hidden;
            text-overflow: ellipsis;
            text-align: center;
        }
        .hist-time {
            font-size: 0.62rem;
            color: var(--text-secondary);
            text-align: center;
        }

        /* ── Form validation ────────────────────────────────── */
        .input-error,
        .input-error.form-control,
        .input-error.form-select {
            border-color: #ef4444 !important;
            box-shadow: 0 0 0 3px rgba(239,68,68,0.15) !important;
            animation: _shake 0.32s ease;
        }
        @keyframes _shake {
            0%,100% { transform: translateX(0); }
            20%     { transform: translateX(-5px); }
            40%     { transform: translateX(5px); }
            60%     { transform: translateX(-3px); }
            80%     { transform: translateX(3px); }
        }
        .field-error-msg {
            font-size: 0.75rem;
            color: #ef4444;
            margin-top: 4px;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        /* Generate button: disabled state */
        .btn-generate:disabled {
            opacity: 0.55;
            cursor: not-allowed;
            transform: none !important;
            box-shadow: none !important;
        }
        /* Input success state (after valid data entered) */
        .input-ok.form-control,
        .input-ok.form-select {
            border-color: #22c55e;
        }

        /* ── Batch QR Panel ─────────────────────────────────── */
        #batch-qr-panel .batch-grid {
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 20px;
        }
        @media (max-width: 680px) {
            #batch-qr-panel .batch-grid { grid-template-columns: 1fr; }
        }
        #batch-input {
            width: 100%;
            min-height: 160px;
            resize: vertical;
            font-family: 'Inter', monospace;
            font-size: 0.82rem;
            line-height: 1.6;
            border: 1.5px solid var(--border);
            border-radius: 8px;
            padding: 10px 12px;
        }
        #batch-input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
            outline: none;
        }
        .batch-controls { display: flex; flex-direction: column; gap: 12px; }
        .batch-controls label { font-size: 0.82rem; font-weight: 500; color: var(--text); margin-bottom: 2px; display: block; }
        #btn-batch-generate {
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: 8px;
            padding: 11px 20px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            width: 100%;
            transition: background 0.15s;
        }
        #btn-batch-generate:hover { background: var(--accent-dark); }
        #btn-batch-generate:disabled { opacity: 0.55; cursor: not-allowed; }
        #batch-progress {
            font-size: 0.78rem;
            color: var(--text-secondary);
            text-align: center;
            min-height: 20px;
        }
        .batch-counter {
            font-size: 0.75rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }
        .batch-progress-bar {
            height: 4px;
            background: var(--border);
            border-radius: 2px;
            overflow: hidden;
            margin-top: 6px;
            display: none;
        }
        .batch-progress-bar-fill {
            height: 100%;
            background: var(--accent);
            border-radius: 2px;
            transition: width 0.2s;
            width: 0%;
        }

        /* ── Dynamic QR ─────────────────────────────────────── */
        #fields-dynqr .btn {
            transition: background 0.15s;
        }
    
        /* ── Dynqr sparkline ─────────────────────────────────── */
        #dynqr-sparkline .spark-bar {
            flex: 1;
            border-radius: 2px 2px 0 0;
            background: var(--accent);
            opacity: 0.7;
            min-height: 2px;
            transition: opacity 0.15s;
            cursor: default;
        }
        #dynqr-sparkline .spark-bar:hover { opacity: 1; }
        #dynqr-sparkline .spark-bar.zero  { background: var(--border); opacity: 1; }
    
/* Unified footer-nav (matching footer.php) */
.footer-inner{max-width:900px;margin:0 auto;text-align:center}
.footer-nav{display:flex;flex-wrap:wrap;gap:6px 14px;justify-content:center;margin-bottom:16px}
.footer-nav a{color:#94a3b8;font-size:.78rem;text-decoration:none}
.footer-nav a:hover{color:#e2e8f0}
.footer-copy{margin:0 0 6px;font-size:.85rem;color:#cbd5e1}
.footer-copy strong{color:#fff}
.footer-note{margin:0;font-size:.75rem;color:#64748b}


/* ── QR Counter Strip ── */
.qr-counter-strip {
    background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 100%);
    padding: 48px 24px;
    color: #fff;
}
.qr-counter-inner {
    display: inline-flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
}
.qr-counter-icon {
    font-size: 2.8rem;
    opacity: .85;
}
.qr-counter-number {
    font-size: clamp(2.8rem, 6vw, 4.5rem);
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.02em;
    line-height: 1;
}
.qr-counter-label {
    font-size: 1.1rem;
    font-weight: 600;
    opacity: .9;
    line-height: 1.4;
    text-align: left;
}
.qr-counter-label small {
    font-size: .8rem;
    font-weight: 400;
    opacity: .75;
}
@media (max-width: 480px) {
    .qr-counter-inner { flex-direction: column; gap: 10px; }
    .qr-counter-label { text-align: center; }
}