/* ======================================================
   Tool styles: MPC Autofill + Print Updates interface
   ====================================================== */

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

:root {
    --accent: #d4a017;
    --accent-hover: #b8890f;
    --accent-muted: rgba(212, 160, 23, 0.10);
    --accent-border: rgba(212, 160, 23, 0.25);
    --primary-color: #2563eb;

    --success: #22a55e;
    --success-hover: #1b8a4e;
    --error: #d93025;

    --dark-900: #0c0f14;
    --dark-800: #13171f;
    --dark-700: #1a1f2b;
    --dark-600: #242b3a;

    --text-primary: #1a1d23;
    --text-secondary: #5c6370;
    --text-on-dark: #d6dae0;
    --text-muted-dark: #7f8694;

    --surface: #ffffff;
    --bg: #eef0f4;
    --border: #d5d9e0;
    --border-light: #e8ebf0;

    --mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
    --sans: 'Space Grotesk', system-ui, -apple-system, sans-serif;

    --radius: 0;
    --chamfer: 8px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 2px 8px rgba(0,0,0,0.07);
}

body {
    font-family: var(--sans);
    background: var(--bg);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    font-size: 14px;
}

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ==================== TOOL BAR ==================== */

.tool-bar {
    display: flex;
    align-items: stretch;
    justify-content: space-between;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
}

.tool-bar .tab-nav {
    padding: 0;
    background: transparent;
    border-bottom: none;
}

.tool-bar .header-actions {
    padding: 0;
    align-self: center;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

.selection-count {
    font-family: var(--mono);
    font-size: 0.7rem;
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
    padding-right: 4px;
}

.btn-select-all,
.btn-clear-selection {
    font-family: var(--sans);
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: 4px 10px;
    border-radius: 0;
    cursor: pointer;
    font-size: 0.72rem;
    font-weight: 600;
    transition: border-color 0.12s, color 0.12s;
    white-space: nowrap;
}
.btn-select-all:hover,
.btn-clear-selection:hover {
    border-color: var(--accent-border);
    color: var(--text-primary);
}

/* Ko-fi */
.btn-ko-fi {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    font-size: 0.72rem;
    font-weight: 600;
    color: white;
    background: #72A5F2;
    border: none;
    border-radius: 0;
    text-decoration: none;
    white-space: nowrap;
    transition: background 0.12s;
}
.btn-ko-fi:hover { background: #5a94e8; color: white; }

.btn-ko-fi-sidebar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 100%;
    margin-top: 8px;
    padding: 8px 12px;
    font-size: 0.78rem;
    font-weight: 600;
    color: #fff;
    background: #72A5F2;
    border: none;
    border-radius: 0;
    clip-path: polygon(0 0, calc(100% - var(--chamfer)) 0, 100% var(--chamfer), 100% 100%, 0 100%);
    text-decoration: none;
    transition: background 0.12s;
}
.btn-ko-fi-sidebar:hover { background: #5a94e8; color: #fff; }
.btn-ko-fi-icon { font-size: 1rem; }

/* ==================== LAYOUT ==================== */

.main-layout {
    display: flex;
    flex: 1;
    max-width: 1280px;
    margin: 0 auto;
    width: 100%;
    padding: 20px 24px;
    gap: 20px;
}

/* ==================== TABS ==================== */

.tab-nav {
    display: flex;
    gap: 0;
    padding: 0 24px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.tab-btn {
    font-family: var(--mono);
    padding: 12px 16px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: color 0.12s, border-color 0.12s;
}
.tab-btn:hover { color: var(--text-primary); }
.tab-btn.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.tab-panel { display: none; flex: 1; flex-direction: column; gap: 16px; }
.tab-panel.active { display: flex; }

/* ==================== CONTENT AREA ==================== */

.card-selection-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-width: 0;
}

.upload-section {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Panel = any white container in the tool */
.upload-card,
.config-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0;
    padding: 20px;
}

.upload-card h2 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.config-card h3 {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.config-description {
    color: var(--text-secondary);
    font-size: 0.8rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

/* Upload zones */
.upload-area {
    border: 1px solid var(--border);
    border-left: 3px solid var(--border);
    border-radius: 0;
    padding: 28px 20px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.12s, background 0.12s;
    background: var(--bg);
}
.upload-area:hover {
    border-left-color: var(--accent);
    background: var(--accent-muted);
}
.upload-area.dragover {
    border-color: var(--accent);
    border-left-color: var(--accent);
    background: var(--accent-muted);
}

.upload-area-alt {
    border-left-color: var(--accent-border);
    background: rgba(212,160,23,0.03);
    margin-bottom: 10px;
}
.upload-area-alt:hover {
    border-left-color: var(--accent);
    background: var(--accent-muted);
}

.upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}
.upload-content svg {
    color: var(--accent);
    opacity: 0.55;
}
.upload-content p {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-primary);
}
.file-hint {
    font-family: var(--mono);
    font-size: 0.68rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.file-info {
    margin-top: 10px;
    padding: 8px 12px;
    background: var(--accent-muted);
    border-left: 3px solid var(--accent);
    border-radius: 0;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ==================== FACE TOGGLE ==================== */

.face-toggle-bar {
    display: flex;
    gap: 2px;
    margin-bottom: 16px;
    background: var(--bg);
    padding: 3px;
    border-radius: 0;
    border: 1px solid var(--border);
}

.face-toggle {
    flex: 1;
    padding: 7px 16px;
    border: none;
    background: transparent;
    border-radius: 0;
    cursor: pointer;
    font-family: var(--mono);
    font-weight: 600;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    transition: all 0.12s;
}
.face-toggle:hover {
    color: var(--text-primary);
    background: rgba(255,255,255,0.6);
}
.face-toggle.active {
    background: var(--dark-700);
    color: var(--accent);
}

/* ==================== CARDS ==================== */

.cards-section { display: flex; flex-direction: column; }

.cards-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.cards-section-header .btn-secondary {
    width: auto;
    margin: 0;
    padding: 6px 14px;
    font-size: 0.75rem;
}

.cards-container {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.batch-header {
    width: 100%;
    padding: 6px 12px;
    margin: 12px 0 4px;
    background: var(--dark-700);
    border-radius: 0;
    font-family: var(--mono);
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    text-align: center;
}

.card-slot {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0;
    padding: 10px;
    width: 240px;
    cursor: pointer;
    user-select: none;
    position: relative;
    transition: border-color 0.12s, box-shadow 0.12s;
}
.card-slot:hover {
    border-color: var(--accent-border);
    box-shadow: var(--shadow-md);
}
.card-slot.selected {
    border-color: var(--accent);
    box-shadow: inset 0 0 0 1px var(--accent);
    background: rgba(212,160,23,0.03);
}

.card-slot-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

.card-slot-label {
    font-family: var(--mono);
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.7rem;
    letter-spacing: 0.02em;
}

.card-slot-checkbox { margin-right: 4px; accent-color: var(--accent); }

.card-slot-delete {
    background: var(--error);
    color: white;
    border: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.78rem;
    font-weight: bold;
    transition: background 0.12s;
    line-height: 1;
}
.card-slot-delete:hover { background: #b52a20; }

.card-image-container {
    position: relative;
    width: 100%;
    min-height: 160px;
    max-height: 360px;
    background: var(--bg);
    border-radius: 0;
    overflow: hidden;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-image {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    background: white;
    display: block;
}

.card-info {
    font-family: var(--mono);
    font-size: 0.65rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 4px;
}

.card-back-selector {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 6px;
    padding-top: 6px;
    border-top: 1px solid var(--border-light);
}
.card-back-selector label {
    font-size: 0.72rem;
    color: var(--text-secondary);
    flex: 1;
}
.card-back-selector select {
    flex: 1;
    padding: 3px 4px;
    border: 1px solid var(--border);
    border-radius: 0;
    font-size: 0.72rem;
    font-family: var(--sans);
}

/* ==================== SIDEBAR ==================== */

.sidebar {
    width: 280px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: sticky;
    top: 72px;
    align-self: flex-start;
    max-height: calc(100vh - 90px);
    overflow-y: auto;
    flex-shrink: 0;
}

.summary-card,
.settings-card,
.cardback-card,
.actions-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0;
    padding: 16px;
}

.summary-card h3,
.settings-card h3,
.cardback-card h3 {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.summary-content {
    color: var(--text-secondary);
    font-size: 0.78rem;
    line-height: 1.55;
}

.summary-content .summary-intro {
    margin-bottom: 6px;
}

.summary-content .summary-steps {
    margin: 0 0 8px 0;
    padding-left: 1.1rem;
}

.summary-content .summary-steps li {
    margin-bottom: 4px;
}

.summary-content .summary-steps li:last-child {
    margin-bottom: 0;
}

.summary-content .summary-next-step {
    margin: 10px 0 0 0;
    padding: 12px 16px;
    border: none;
    border-left: 3px solid var(--accent);
    background: var(--accent-muted);
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-primary);
}
.summary-content .summary-next-step strong { color: var(--text-primary); }

.summary-content .summary-print-updates {
    margin: 6px 0 0 0;
    padding-top: 6px;
    border-top: 1px solid var(--border);
}

.summary-content a {
    color: var(--accent);
    text-decoration: none;
}

.summary-content a:hover {
    text-decoration: underline;
}

.summary-content code {
    font-size: 0.72rem;
    background: var(--bg-tertiary);
    padding: 1px 4px;
}

.summary-content.summary-stats p {
    margin: 0 0 4px 0;
}

.summary-content.summary-stats p:last-child {
    margin-bottom: 0;
}

.summary-content.summary-stats .summary-cost-per-card {
    font-size: 0.72rem;
    color: var(--text-secondary);
}

.summary-content.summary-stats-empty {
    color: var(--text-muted, var(--text-secondary));
    font-style: italic;
}

/* Post-download confirmation & feedback */
.summary-confirmation {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.summary-confirmation .confirmation-thanks {
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.summary-confirmation .confirmation-prompt {
    margin: 0;
    color: var(--text-secondary);
}

.summary-confirmation .confirmation-feedback-input {
    width: 100%;
    min-height: 60px;
    padding: 8px;
    font-size: 0.78rem;
    font-family: var(--sans);
    border: 1px solid var(--border);
    border-radius: 0;
    resize: vertical;
    box-sizing: border-box;
}

.summary-confirmation .confirmation-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.summary-confirmation .btn-confirmation {
    width: 100%;
    padding: 8px 12px;
    font-size: 0.78rem;
}

.summary-confirmation .btn-ko-fi-confirmation {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 12px;
    font-size: 0.78rem;
    font-weight: 600;
    color: white;
    background: #72A5F2;
    border: none;
    border-radius: 0;
    text-decoration: none;
    transition: background 0.15s ease;
}

.summary-confirmation .btn-ko-fi-confirmation:hover {
    background: #5a94e8;
    color: white;
}

.summary-confirmation .confirmation-start-over {
    margin: 8px 0 0 0;
    padding-top: 8px;
    border-top: 1px solid var(--border);
    font-size: 0.72rem;
    color: var(--text-secondary);
}

.setting-group { margin-bottom: 10px; }
.setting-group:last-child { margin-bottom: 0; }
.setting-group label {
    display: block;
    margin-bottom: 4px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.78rem;
}

.select-input {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid var(--border);
    border-radius: 0;
    font-size: 0.78rem;
    font-family: var(--sans);
    background: white;
    transition: border-color 0.12s;
}
.select-input:focus {
    outline: none;
    border-color: var(--accent);
}

.toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 0.78rem;
}
.toggle input[type="checkbox"],
.toggle input[type="radio"] {
    width: 15px;
    height: 15px;
    cursor: pointer;
    accent-color: var(--accent);
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* ==================== CARDBACKS ==================== */

.cardback-upload-area {
    position: relative;
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent-border);
    border-radius: 0;
    padding: 12px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.12s;
    min-height: 160px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.cardback-upload-area:hover {
    border-left-color: var(--accent);
}

.cardback-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    font-size: 0.8rem;
}
.cardback-placeholder svg { color: var(--accent); opacity: 0.5; }

.cardback-image {
    max-width: 100%;
    max-height: 180px;
    border-radius: 0;
    object-fit: contain;
    display: block;
    margin: 0 auto;
}

.cardback-item {
    margin-bottom: 8px;
    padding: 10px;
    background: var(--bg);
    border-radius: 0;
    border: 1px solid var(--border-light);
}
.cardback-item:last-child { margin-bottom: 0; }

.cardback-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}
.cardback-card-header h3 { margin: 0; flex: 1; min-width: 0; }

.btn-add-cardback {
    flex-shrink: 0;
    font-family: var(--mono);
    background: var(--accent);
    color: var(--dark-900);
    border: none;
    padding: 4px 10px;
    font-size: 0.68rem;
    font-weight: 700;
    border-radius: 0;
    clip-path: polygon(0 0, calc(100% - 6px) 0, 100% 6px, 100% 100%, 0 100%);
    cursor: pointer;
    transition: background 0.12s;
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.btn-add-cardback:hover { background: var(--accent-hover); }

.cardback-group { margin-bottom: 10px; }
.cardback-group:last-child { margin-bottom: 0; }
.cardback-group-title {
    font-family: var(--mono);
    font-size: 0.68rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 4px;
}
.cardback-group-meta {
    font-size: 0.68rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.cardback-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 4px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}
.cardback-item-title-row {
    display: flex;
    align-items: center;
    gap: 4px;
    min-width: 0;
}
.cardback-item-title-row strong {
    font-size: 0.78rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.cardback-item-title-row .cardback-item-index {
    font-family: var(--mono);
    font-size: 0.65rem;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.btn-nav-cardback {
    padding: 2px 6px;
    background: var(--dark-700);
    color: var(--accent);
    border: none;
    border-radius: 0;
    cursor: pointer;
    font-family: var(--mono);
    font-size: 0.68rem;
    font-weight: 700;
    line-height: 1;
    transition: background 0.12s;
}
.btn-nav-cardback:hover { background: var(--dark-600); }

.cardback-item .btn-remove-small {
    margin-top: 0;
    flex-shrink: 0;
    padding: 3px 8px;
    font-size: 0.68rem;
}

.cardback-item-body {
    display: flex;
    gap: 8px;
    align-items: center;
}
.cardback-item-thumb {
    width: 56px;
    height: 56px;
    flex-shrink: 0;
    border-radius: 0;
    object-fit: contain;
    background: var(--surface);
    border: 1px solid var(--border-light);
}
.cardback-item-actions { flex: 1; min-width: 0; }

.cardback-item-actions .btn-assign-cardback {
    width: 100%;
    padding: 5px 8px;
    font-size: 0.68rem;
    font-weight: 700;
    font-family: var(--mono);
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--accent-border);
    border-radius: 0;
    cursor: pointer;
    transition: background 0.12s, color 0.12s;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin: 0;
}
.cardback-item-actions .btn-assign-cardback:hover {
    background: var(--accent);
    color: var(--dark-900);
    border-color: var(--accent);
}

.btn-remove-cardback {
    margin-top: 6px;
    background: var(--error);
    color: white;
    border: none;
    padding: 6px 10px;
    border-radius: 0;
    cursor: pointer;
    font-size: 0.72rem;
    font-weight: 600;
    width: 100%;
}
.btn-remove-cardback:hover { background: #b52a20; }

.cardback-hint {
    margin: 0 0 8px;
    font-size: 0.7rem;
    color: var(--text-secondary);
    line-height: 1.45;
}

/* ==================== BUTTONS ==================== */

.btn-primary {
    font-family: var(--mono);
    background: var(--accent);
    color: var(--dark-900);
    border: none;
    padding: 10px 20px;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 0;
    clip-path: polygon(0 0, calc(100% - var(--chamfer)) 0, 100% var(--chamfer), 100% 100%, 0 100%);
    cursor: pointer;
    transition: background 0.12s;
    width: 100%;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }
.btn-primary:disabled {
    background: var(--border);
    color: var(--text-secondary);
    cursor: not-allowed;
    clip-path: none;
}

.btn-secondary {
    font-family: var(--sans);
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: 9px 20px;
    font-size: 0.78rem;
    font-weight: 600;
    border-radius: 0;
    cursor: pointer;
    transition: border-color 0.12s, color 0.12s;
    width: 100%;
    margin-top: 6px;
}
.btn-secondary:hover {
    border-color: var(--text-secondary);
    color: var(--text-primary);
}

.btn-download {
    font-family: var(--mono);
    background: var(--success);
    color: white;
    border: none;
    padding: 10px 20px;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 0;
    clip-path: polygon(0 0, calc(100% - var(--chamfer)) 0, 100% var(--chamfer), 100% 100%, 0 100%);
    cursor: pointer;
    transition: background 0.12s;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.btn-download:hover:not(:disabled) { background: var(--success-hover); }
.btn-download:disabled {
    background: var(--border);
    color: var(--text-secondary);
    cursor: not-allowed;
    clip-path: none;
}

.config-card .btn-primary,
.config-card .btn-secondary {
    margin-top: 12px;
}

/* ==================== INPUTS ==================== */

.input-group { margin-bottom: 12px; }
.input-group label {
    display: block;
    margin-bottom: 4px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.78rem;
}

.text-input {
    width: 100%;
    padding: 7px 10px;
    border: 1px solid var(--border);
    border-radius: 0;
    font-size: 0.82rem;
    font-family: var(--sans);
    transition: border-color 0.12s;
}
.text-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-muted);
}

.hint {
    color: var(--text-secondary);
    font-size: 0.72rem;
    margin-top: 3px;
    display: block;
}

.error-message {
    margin-top: 6px;
    padding: 6px 10px;
    background: rgba(217, 48, 37, 0.06);
    color: var(--error);
    border-left: 3px solid var(--error);
    border-radius: 0;
    font-size: 0.78rem;
}

/* ==================== PROCESSING ==================== */

.processing-overlay {
    position: fixed;
    inset: 0;
    background: rgba(12, 15, 20, 0.75);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(3px);
}

.processing-content {
    background: var(--surface);
    padding: 32px 40px;
    border-radius: 0;
    text-align: center;
    border: 1px solid var(--border);
    box-shadow: 0 16px 48px rgba(0,0,0,0.2);
}

.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    margin: 0 auto 12px;
}

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

#processing-message {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.85rem;
}

/* ==================== DOWNLOAD SUCCESS MODAL ==================== */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(12, 15, 20, 0.75);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1001;
    backdrop-filter: blur(3px);
}

.modal-overlay .modal-dialog {
    position: relative;
    background: var(--surface);
    padding: 28px 32px;
    border-radius: 0;
    border: 1px solid var(--border);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
    max-width: 420px;
    width: 90%;
}

.modal-overlay .modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 32px;
    height: 32px;
    padding: 0;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    transition: color 0.15s ease;
}

.modal-overlay .modal-close:hover {
    color: var(--text-primary);
}

.modal-overlay .modal-title {
    margin: 0 0 8px 0;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-overlay .modal-lead {
    margin: 0 0 16px 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.modal-overlay .modal-prompt {
    margin: 0 0 8px 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.modal-overlay .modal-feedback-input {
    width: 100%;
    min-height: 72px;
    padding: 10px 12px;
    margin-bottom: 10px;
    font-size: 0.85rem;
    font-family: var(--sans);
    border: 1px solid var(--border);
    border-radius: 0;
    resize: vertical;
    box-sizing: border-box;
}

.modal-overlay .modal-optional-label {
    margin: 0 0 6px 0;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.modal-overlay .modal-feedback-optional {
    width: 100%;
    padding: 8px 12px;
    margin-bottom: 8px;
    font-size: 0.85rem;
    font-family: var(--sans);
    border: 1px solid var(--border);
    border-radius: 0;
    box-sizing: border-box;
}

.modal-overlay .modal-feedback-optional:last-of-type {
    margin-bottom: 14px;
}

.modal-overlay .modal-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 16px;
}

.modal-overlay .modal-actions .btn-primary {
    width: 100%;
}

.modal-overlay .btn-ko-fi-modal {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 14px;
    font-size: 0.85rem;
    font-weight: 600;
    color: white;
    background: #72A5F2;
    border: none;
    border-radius: 0;
    text-decoration: none;
    transition: background 0.15s ease;
}

.modal-overlay .btn-ko-fi-modal:hover {
    background: #5a94e8;
    color: white;
}

.modal-overlay .modal-close-btn {
    width: 100%;
}

/* ==================== PDF FILE ITEMS ==================== */

.pdf-file-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0;
    padding: 14px 16px;
    margin-bottom: 8px;
}

.pdf-file-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-light);
}

.pdf-file-header h4 {
    margin: 0;
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 700;
}

.pdf-page-count {
    font-family: var(--mono);
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg);
    padding: 2px 8px;
    border: 1px solid var(--border-light);
    border-radius: 0;
}

.pdf-file-config {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.pdf-front-pages-group { margin-top: 4px; }

.pdf-error {
    color: var(--error);
    font-size: 0.72rem;
    margin-top: 4px;
    padding: 4px 8px;
    background: rgba(217, 48, 37, 0.05);
    border-radius: 0;
}

/* ==================== SMALL UPLOADS ==================== */

.upload-area-small {
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent-border);
    border-radius: 0;
    padding: 10px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.12s;
    background: var(--bg);
}
.upload-area-small:hover {
    border-left-color: var(--accent);
}

.upload-content-small {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    min-height: 72px;
    justify-content: center;
}

.cardback-preview-small {
    max-width: 100%;
    max-height: 120px;
    border-radius: 0;
    object-fit: contain;
}

.btn-remove-small {
    margin-top: 6px;
    padding: 4px 10px;
    background: var(--error);
    color: white;
    border: none;
    border-radius: 0;
    cursor: pointer;
    font-size: 0.72rem;
    font-weight: 600;
    transition: background 0.12s;
}
.btn-remove-small:hover { background: #b52a20; }

/* ==================== UTILITY ==================== */

.hidden { display: none !important; }

/* ==================== RESPONSIVE ==================== */

@media (max-width: 1024px) {
    .main-layout { flex-direction: column; }
    .sidebar {
        width: 100%;
        position: static;
        max-height: none;
    }
    .cards-container { justify-content: center; }
}

@media (max-width: 640px) {
    .main-layout { padding: 12px 12px; }
    .tool-bar { flex-direction: column; padding: 0 12px; }
    .tool-bar .tab-nav { width: 100%; }
    .tool-bar .header-actions { padding: 4px 0 8px; flex-wrap: wrap; }
    .card-slot { width: 100%; }
}