/* ==========================================================================
           1. DESIGN TOKENS (SCRYFALL / MTG ARENA DARK INSPIRED)
           ========================================================================== */
        :root {
            --bg-gradient: linear-gradient(135deg, #090d0a 0%, #111812 50%, #151e16 100%);
            --bg: #0b100c;
            --bg-alt: #121913;
            --surface: #162017;
            --surface-elevated: #1f2d20;
            --surface-accent: #263628;
            --border: #2d3f30;
            --border-glow: #3e5842;
            --gold: #c5a059;
            --gold-hover: #e0be7a;
            --gold-dim: #8b6e3b;
            --gold-glow: rgba(197, 160, 89, 0.25);
            --green-mana: #225a33;
            --green-mana-hover: #2d7543;
            --green-mana-glow: rgba(45, 117, 67, 0.3);
            --text: #e2e8f0;
            --text-muted: #8fa393;
            --text-dim: #647c6a;
            --error: #f43f5e;
            --error-bg: rgba(244, 63, 94, 0.1);
            --ok: #10b981;
            --ok-bg: rgba(16, 185, 129, 0.1);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.5);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.6);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.8);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ==========================================================================
           PREMIUM LIGHT THEME (Parchment/Bone tones, clean borders, soft shadows)
           ========================================================================== */
        [data-theme="light"] {
            --bg-gradient: linear-gradient(135deg, #f8f9f7 0%, #f0f1ec 50%, #e8eadd 100%);
            --bg: #f8f9f7;
            --bg-alt: #eff1ec;
            --surface: #ffffff;
            --surface-elevated: #fcfdfc;
            --surface-accent: #e4e6df;
            --border: #d4d7d0;
            --border-glow: #bdc1b8;
            --gold: #b38b36;
            --gold-hover: #c9a34e;
            --gold-dim: #8f6e2a;
            --gold-glow: rgba(179, 139, 54, 0.2);
            --green-mana: #3e6e44;
            --green-mana-hover: #4e8a55;
            --green-mana-glow: rgba(62, 110, 68, 0.15);
            --text: #2c332e;
            --text-muted: #57635a;
            --text-dim: #7a877e;
            --error: #d32f2f;
            --error-bg: #ffebee;
            --ok: #2e7d32;
            --ok-bg: #e8f5e9;
            --shadow-sm: 0 2px 8px rgba(40, 50, 45, 0.06);
            --shadow-md: 0 6px 16px rgba(40, 50, 45, 0.1);
            --shadow-lg: 0 16px 40px rgba(40, 50, 45, 0.14);
        }

        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            background: var(--bg);
            background-image: var(--bg-gradient);
            color: var(--text);
            font-family: 'Inter', sans-serif;
            font-size: 14px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
            letter-spacing: -0.01em;
        }

        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: var(--radius-sm);
        }

            ::-webkit-scrollbar-thumb:hover {
                background: var(--gold-dim);
            }

        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(22, 32, 23, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            padding: 0 24px;
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: var(--shadow-sm);
        }

        [data-theme="light"] header {
            background: rgba(255, 255, 255, 0.9);
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .logo-icon {
            width: 28px;
            height: 28px;
            background: linear-gradient(135deg, var(--gold) 0%, var(--gold-dim) 100%);
            clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
            box-shadow: 0 0 10px var(--gold-glow);
        }

        h1 {
            font-family: 'Cinzel', serif;
            font-size: 1.15rem;
            font-weight: 800;
            letter-spacing: 0.08em;
            color: var(--text);
            line-height: 1;
        }

            h1 span {
                color: var(--gold);
                font-weight: 500;
                font-size: 0.68rem;
                display: block;
                margin-top: 4px;
                letter-spacing: 0.15em;
                font-family: 'Inter', sans-serif;
                text-transform: uppercase;
            }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .header-btn {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-muted);
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            font-size: 0.85rem;
            display: flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

            .header-btn:hover {
                border-color: var(--gold-dim);
                color: var(--gold);
                background: var(--surface);
            }

        .theme-toggle {
            background: var(--surface-elevated);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 6px 14px;
            cursor: pointer;
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

            .theme-toggle:hover {
                border-color: var(--gold);
                box-shadow: 0 0 8px var(--gold-glow);
            }

        main {
            flex: 1;
            display: grid;
            grid-template-columns: 380px 1fr;
            width: 100%;
            max-width: 1800px;
            margin: 0 auto;
            align-items: start;
        }

        .panel {
            position: sticky;
            top: 64px;
            height: calc(100vh - 64px);
            overflow-y: auto;
            display: flex;
            flex-direction: column;
            gap: 20px;
            padding: 24px;
            background: rgba(18, 25, 19, 0.6);
            border-right: 1px solid var(--border);
        }

        [data-theme="light"] .panel {
            background: rgba(248, 249, 247, 0.6);
        }

        .visual-steps {
            display: flex;
            flex-direction: column;
            gap: 8px;
            background: var(--surface);
            padding: 12px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }

        .step-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--text-dim);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .step-num {
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--surface-elevated);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            color: var(--text-muted);
        }

        .step-item.active {
            color: var(--gold);
        }

            .step-item.active .step-num {
                background: var(--gold-dim);
                border-color: var(--gold);
                color: var(--surface);
            }

        .control-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .field-label {
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            color: var(--text-muted);
            text-transform: uppercase;
        }

        textarea {
            width: 100%;
            height: 160px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            color: var(--text);
            font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
            font-size: 0.85rem;
            line-height: 1.6;
            padding: 12px;
            resize: vertical;
            outline: none;
            transition: var(--transition);
        }

            textarea:focus {
                border-color: var(--gold-dim);
                box-shadow: 0 0 0 3px var(--gold-glow);
                background: var(--surface-elevated);
            }

        select {
            width: 100%;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            color: var(--text);
            font-family: inherit;
            font-size: 0.9rem;
            padding: 10px 36px 10px 12px;
            outline: none;
            cursor: pointer;
            transition: var(--transition);
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238fa393' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
        }

            select:focus {
                border-color: var(--gold-dim);
                box-shadow: 0 0 0 3px var(--gold-glow);
            }

        .pdf-options-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 10px;
            background: var(--surface);
            padding: 12px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }

        .pdf-opt-label {
            display: flex;
            flex-direction: column;
            gap: 4px;
            font-size: 0.7rem;
            color: var(--text-muted);
            text-transform: uppercase;
            font-weight: 600;
        }

            .pdf-opt-label select {
                padding: 6px 24px 6px 8px;
                font-size: 0.8rem;
                border-radius: var(--radius-sm);
            }

        .stats {
            background: linear-gradient(to bottom, var(--surface), var(--bg-alt));
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 12px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 4px;
            box-shadow: var(--shadow-sm);
        }

        .stat-block {
            text-align: center;
            border-right: 1px solid var(--border);
        }

            .stat-block:last-child {
                border-right: none;
            }

        .stat-val {
            font-family: 'Cinzel', serif;
            font-size: 1.5rem;
            color: var(--gold);
            font-weight: 700;
        }

        .stat-lbl {
            font-size: 0.62rem;
            color: var(--text-dim);
            text-transform: uppercase;
            font-weight: 700;
            letter-spacing: 0.05em;
        }

        #log {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 10px 14px;
            font-size: 0.82rem;
            color: var(--text-muted);
            min-height: 40px;
            display: flex;
            align-items: center;
            transition: var(--transition);
        }

            #log.error {
                color: var(--error);
                background: var(--error-bg);
                border-color: var(--error);
                font-weight: bold;
            }

            #log.ok {
                color: var(--ok);
                background: var(--ok-bg);
                border-color: var(--ok);
            }

        .progress-wrap {
            height: 4px;
            background: var(--border);
            border-radius: 2px;
            overflow: hidden;
        }

        #progress-bar {
            height: 100%;
            width: 0%;
            background: linear-gradient(90deg, var(--green-mana) 0%, var(--gold) 100%);
            transition: width 0.3s ease;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-family: 'Inter', sans-serif;
            font-size: 0.85rem;
            font-weight: 600;
            padding: 12px 20px;
            border-radius: var(--radius);
            border: none;
            cursor: pointer;
            width: 100%;
            transition: var(--transition);
        }

        .btn-primary {
            background: var(--green-mana);
            color: #fff;
            box-shadow: 0 4px 12px var(--green-mana-glow);
        }

            .btn-primary:hover:not(:disabled) {
                background: var(--green-mana-hover);
                transform: translateY(-1px);
                box-shadow: 0 6px 20px var(--green-mana-glow);
            }

            .btn-primary:disabled {
                opacity: 0.25;
                cursor: not-allowed;
                transform: none;
            }

        .btn-gold {
            background: linear-gradient(to bottom, var(--gold), var(--gold-dim));
            color: #ffffff;
            box-shadow: 0 4px 12px var(--gold-glow);
            font-weight: 700;
        }

        [data-theme="light"] .btn-gold {
            color: #ffffff; /* Keep it white for better contrast on gold */
        }

        .btn-gold:hover:not(:disabled) {
            filter: brightness(1.1);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px var(--gold-glow);
        }

        .btn-gold:disabled {
            opacity: 0.15;
            cursor: not-allowed;
            transform: none;
        }

        .preview-wrap {
            padding: 32px;
            min-height: calc(100vh - 64px);
            background: rgba(11, 16, 12, 0.4);
        }

        [data-theme="light"] .preview-wrap {
            background: rgba(220, 222, 218, 0.3);
        }

        .preview-surface {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-md);
        }

        .preview-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border);
        }

        .preview-title {
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            color: var(--text-muted);
            text-transform: uppercase;
        }

        #preview-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 24px;
        }

        .card-thumb {
            position: relative;
            border-radius: 4.75% / 3.5%;
            overflow: hidden;
            aspect-ratio: 63/88;
            background: var(--bg-alt);
            border: 1px solid var(--border);
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

            .card-thumb:hover {
                transform: translateY(-6px) scale(1.02);
                border-color: var(--gold);
                box-shadow: var(--shadow-lg), 0 0 15px var(--gold-glow);
                z-index: 10;
            }

            .card-thumb img {
                width: 100%;
                height: 100%;
                object-fit: cover;
                display: block;
                transition: filter 0.3s;
            }

                .card-thumb img.hq-loading {
                    filter: blur(4px);
                }

        .card-meta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(0,0,0,0.4) 0%, rgba(0,0,0,0.1) 40%, rgba(0,0,0,0.9) 100%);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            padding: 12px;
            opacity: 0;
            transition: opacity 0.2s ease;
            pointer-events: none;
            z-index: 2;
        }

        .card-thumb:hover .card-meta-overlay {
            opacity: 1;
        }

        .card-info-top, .card-info-bottom {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            pointer-events: auto;
        }

        .card-info-bottom {
            flex-direction: column;
            gap: 2px;
        }

        .card-title-text {
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            text-shadow: 0 1px 4px #000;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 100%;
        }

        .card-set-text {
            font-size: 0.72rem;
            color: var(--gold);
            font-weight: 600;
            text-transform: uppercase;
        }

        .card-badge-ui {
            background: rgba(15, 23, 15, 0.85);
            backdrop-filter: blur(4px);
            color: var(--gold);
            font-size: 0.72rem;
            font-weight: 700;
            border-radius: 4px;
            padding: 2px 8px;
            border: 1px solid var(--gold-dim);
            line-height: 1.4;
        }

        .card-remove-btn {
            background: #e11d48;
            color: #fff;
            border: none;
            width: 24px;
            height: 24px;
            border-radius: 4px;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-sm);
        }

        .skeleton-card {
            aspect-ratio: 63/88;
            background: linear-gradient(90deg, var(--surface) 25%, var(--surface-elevated) 50%, var(--surface) 75%);
            background-size: 200% 100%;
            animation: loading-skeleton 1.5s infinite;
            border-radius: 4.75% / 3.5%;
            border: 1px solid var(--border);
        }

        .card-thumb.error-card {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px;
            text-align: center;
            cursor: default;
            background: rgba(225, 29, 72, 0.08);
            border: 1px solid #e11d48;
        }

            .error-card-icon {
                font-size: 1.8rem;
                line-height: 1;
            }

            .error-card-name {
                font-size: 0.85rem;
                font-weight: 700;
                color: #fff;
                word-break: break-word;
            }

            .error-card-msg {
                font-size: 0.72rem;
                color: #fca5a5;
                line-height: 1.3;
            }

            .error-card-remove {
                position: absolute;
                top: 8px;
                right: 8px;
            }

        @keyframes loading-skeleton {
            0% {
                background-position: 200% 0;
            }

            100% {
                background-position: -200% 0;
            }
        }

        .empty-state {
            grid-column: 1/-1;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 16px;
            height: 340px;
            color: var(--text-dim);
            border: 2px dashed var(--border);
            border-radius: var(--radius-lg);
            font-style: italic;
        }

        .empty-state-icon {
            font-size: 2.5rem;
            filter: grayscale(1);
            opacity: 0.4;
        }

        .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(5, 8, 6, 0.85);
            backdrop-filter: blur(8px);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1000;
            padding: 24px;
            opacity: 0;
            pointer-events: none;
            transition: var(--transition);
        }

        [data-theme="light"] .modal-overlay {
            background: rgba(240, 241, 238, 0.8);
        }

        .modal-overlay.open {
            opacity: 1;
            pointer-events: all;
        }

        .modal {
            background: var(--surface);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            width: min(1100px, 100%);
            max-height: 85vh;
            display: flex;
            flex-direction: column;
            transform: scale(0.96) translateY(10px);
            transition: var(--transition);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .modal-overlay.open .modal {
            transform: scale(1) translateY(0);
        }

        .modal-header {
            padding: 20px 24px;
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: var(--bg-alt);
        }

        .modal-title {
            font-family: 'Cinzel', serif;
            font-size: 0.8rem;
            letter-spacing: 0.1em;
            color: var(--gold);
            text-transform: uppercase;
        }

        .modal-card-name {
            font-size: 1.25rem;
            font-weight: 400;
            color: var(--text);
            margin-top: 2px;
        }

        .modal-controls {
            padding: 14px 24px;
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            border-bottom: 1px solid var(--border);
            background: var(--surface-elevated);
        }

            .modal-controls label {
                font-size: 0.72rem;
                font-weight: 700;
                color: var(--text-muted);
                text-transform: uppercase;
            }

        .modal-lang-select {
            width: auto;
            padding: 6px 32px 6px 12px;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
        }

        .modal-body {
            padding: 24px;
            overflow-y: auto;
            flex: 1;
            background: var(--bg);
        }

        .prints-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
            gap: 20px;
        }

        .print-card {
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            cursor: pointer;
            transition: var(--transition);
            background: var(--surface);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            position: relative;
        }

            .print-card:hover {
                border-color: var(--gold-dim);
                transform: translateY(-4px);
                box-shadow: var(--shadow-md);
            }

            .print-card.selected {
                border-color: var(--gold);
                box-shadow: 0 0 12px var(--gold-glow);
                background: var(--surface-accent);
            }

            .print-card img {
                width: 100%;
                display: block;
                aspect-ratio: 63/88;
                object-fit: cover;
                background: var(--bg-alt);
            }

        .print-meta {
            padding: 10px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            gap: 4px;
        }

            .print-meta .set-name {
                font-size: 0.8rem;
                font-weight: 600;
                color: var(--text);
                white-space: nowrap;
                overflow: hidden;
                text-overflow: ellipsis;
            }

            .print-meta .set-detail {
                font-size: 0.7rem;
                color: var(--text-dim);
                text-transform: uppercase;
                font-weight: 500;
            }

        .print-badge {
            position: absolute;
            top: 6px;
            right: 6px;
            background: rgba(0,0,0,0.75);
            color: #fff;
            font-size: 0.6rem;
            padding: 2px 6px;
            border-radius: 3px;
            text-transform: uppercase;
            font-weight: 700;
        }

        .loading-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(5, 8, 6, 0.8);
            backdrop-filter: blur(4px);
            z-index: 1500;
            align-items: center;
            justify-content: center;
        }

        [data-theme="light"] .loading-overlay {
            background: rgba(248, 249, 247, 0.7);
        }

        .loading-overlay.active {
            display: flex;
        }

        .loading-card {
            background: var(--surface);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 32px 48px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 16px;
            box-shadow: var(--shadow-lg);
            text-align: center;
        }

        .spinner-ring {
            width: 40px;
            height: 40px;
            border: 3px solid var(--border);
            border-top-color: var(--gold);
            border-radius: 50%;
            animation: spin 0.8s cubic-bezier(0.4, 0, 0.2, 1) infinite;
        }

        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }

        footer {
            border-top: 1px solid var(--border);
            padding: 16px;
            text-align: center;
            font-size: 0.78rem;
            color: var(--text-dim);
            background: var(--bg-alt);
        }

            footer a {
                color: var(--gold);
                text-decoration: none;
                font-weight: 500;
            }

                footer a:hover {
                    text-decoration: underline;
                }

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

            .panel {
                position: static;
                height: auto;
                border-right: none;
                border-bottom: 1px solid var(--border);
                padding: 16px;
            }

            .preview-wrap {
                padding: 16px;
            }

            #preview-grid {
                grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
                gap: 16px;
            }
        }

        .lang-selector { 
    position: relative; 
}
.lang-menu { 
    display: none; 
    position: absolute; 
    top: 110%; 
    right: 0; 
    background: var(--bg-alt); 
    border: 1px solid var(--border); 
    border-radius: 8px; 
    overflow: hidden; 
    z-index: 999; 
    min-width: 140px; 
    box-shadow: var(--shadow-md);
}
.lang-menu.open { 
    display: block; 
}
.lang-menu button { 
    display: block; 
    width: 100%; 
    padding: 9px 16px; 
    background: none; 
    border: none; 
    color: var(--text); 
    cursor: pointer; 
    text-align: left; 
    font-size: 0.85rem; 
    transition: background 0.2s;
}
.lang-menu button:hover { 
    background: var(--surface-elevated); 
}

.btn-action-sec {
    background: var(--surface-accent);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 6px 14px;
    border-radius: 6px;
    font-family: 'Inter', sans-serif;
    font-size: 0.82rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
}

.btn-action-sec:hover:not(:disabled) {
    background: var(--surface-elevated);
    border-color: var(--gold-dim);
    color: var(--gold);
}

.btn-action-sec:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}
/* ── Toggle switch (Skip Basic Lands) ──────────────────────────── */
.toggle-row {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    user-select: none;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 4px 0;
}

.toggle-row input[type="checkbox"] {
    display: none;
}

.toggle-knob {
    width: 34px;
    height: 18px;
    background: var(--border);
    border-radius: 9px;
    position: relative;
    flex-shrink: 0;
    transition: background 0.2s ease;
}

.toggle-knob::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-dim);
    transition: transform 0.2s ease, background 0.2s ease;
}

.toggle-row input:checked + .toggle-knob {
    background: var(--gold-dim);
}

.toggle-row input:checked + .toggle-knob::after {
    transform: translateX(16px);
    background: var(--gold);
}

/* ── Secondary btn (custom upload) ────────────────────────────── */
.btn-secondary {
    background: var(--surface-elevated);
    color: var(--text-muted);
    border: 1px solid var(--border);
    box-shadow: none;
}

.btn-secondary:hover:not(:disabled) {
    background: var(--surface-accent);
    color: var(--text);
    border-color: var(--border-glow);
    transform: translateY(-1px);
}

.btn-secondary:disabled {
    opacity: 0.25;
    cursor: not-allowed;
}

/* ── Duplicate card button ─────────────────────────────────────── */
.card-dup-btn {
    background: rgba(80, 40, 140, 0.85);
    color: #d4aaff;
    border: none;
    width: 24px;
    height: 24px;
    border-radius: 4px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    box-shadow: var(--shadow-sm);
    transition: background 0.15s;
}

.card-dup-btn:hover {
    background: rgba(110, 60, 190, 0.95);
}

/* ── Custom card badge ─────────────────────────────────────────── */
.badge-custom {
    background: rgba(20, 60, 80, 0.85);
    border-color: #38bdf8;
    color: #38bdf8;
}
/* ── Qty stepper ──────────────────────────────────────────────── */
.qty-stepper {
    display: flex;
    align-items: center;
    gap: 0;
    background: rgba(10, 16, 10, 0.88);
    backdrop-filter: blur(4px);
    border: 1px solid var(--gold-dim);
    border-radius: 5px;
    overflow: hidden;
}

.qty-btn {
    background: transparent;
    border: none;
    color: var(--gold);
    width: 22px;
    height: 22px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    transition: background 0.15s;
    padding-bottom: 1px;
}

.qty-btn:hover {
    background: rgba(197, 160, 89, 0.2);
}

.qty-display {
    font-size: 0.75rem;
    font-weight: 700;
    color: #fff;
    min-width: 18px;
    text-align: center;
    padding: 0 2px;
    font-family: 'Cinzel', serif;
}

/* ==========================================================================
   SISTEMA DE MULTI-BACK SELECTION (SIN ESTILOS INLINE)
   ========================================================================== */

.bulk-back-panel {
    display: none;
    background: var(--bg-alt);
    padding: 16px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    border: 1.5px solid var(--gold-dim);
    gap: 16px;
    align-items: center;
    flex-wrap: wrap;
    width: 100%;
}

.bulk-back-panel.active {
    display: flex;
}

.bulk-back-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.back-presets-gallery {
    display: flex;
    gap: 10px;
    align-items: center;
}

.back-preset-item {
    position: relative;
    width: 46px;
    height: 64px;
    border-radius: var(--radius-sm);
    border: 2px solid var(--border);
    cursor: pointer;
    overflow: hidden;
    transition: var(--transition);
    background: var(--bg);
    box-shadow: var(--shadow-sm);
}

.back-preset-item:hover {
    border-color: var(--gold-hover);
    transform: translateY(-2px);
    box-shadow: 0 0 8px var(--gold-glow);
}

.back-preset-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Selección interactiva de cartas */
.card-thumb.selected-back {
    border: 2.5px solid var(--gold) !important;
    box-shadow: 0 0 16px var(--gold-glow), var(--shadow-lg) !important;
    transform: translateY(-4px) scale(1.01);
}

/* Checkmark flotante en esquina superior derecha de la carta seleccionada */
.card-back-indicator {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--ok);
    color: #ffffff;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    z-index: 5;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(255, 255, 255, 0.25);
    pointer-events: none;
}

.btn-right-align {
    margin-left: auto;
}
/* Aviso informativo para el usuario en modo doble cara */
.back-warning-notice {
    width: 100%;
    padding: 10px 14px;
    background: var(--error-bg);
    border: 1px dashed var(--error);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 0.8rem;
    line-height: 1.4;
    margin-top: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.back-warning-notice strong {
    color: var(--error);
}