:root {
    --ink: #222;
    --muted: #666;
    --line: #d6d6d6;
    --paper: #fff;
    --surface: #f6f6f6;
    --accent: #111;
    --danger: #9b2226;
    --card-width: 62mm;
    --card-height: 87mm;
    --cards-per-row: 3;
    --cards-per-column: 3;
    --page-width: 210mm;
    --page-height: 297mm;
    --page-width-mm: 210;
    --page-height-mm: 297;
    --page-preview-width: 100%;
    --preview-grid-width: 88.57%;
    --preview-grid-ratio: 186 / 261;
    --container: 1500px;
}

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

body {
    min-height: 100vh;
    margin: 0;
    color: var(--ink);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.4;
    background: var(--surface);
}

img {
    max-width: 100%;
}

button,
input,
select {
    font: inherit;
}

button {
    min-height: 36px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: var(--paper);
    color: var(--ink);
    cursor: pointer;
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
.upload-control:focus-within {
    outline: 2px solid #444;
    outline-offset: 2px;
}

.top-nav {
    position: sticky;
    top: 0;
    z-index: 10;
    border-bottom: 1px solid var(--line);
    background: var(--paper);
}

.nav-inner,
.page-frame {
    width: min(var(--container), calc(100% - 32px));
    margin: 0 auto;
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 18px;
    min-height: 52px;
}

.navbar-brand {
    color: var(--ink);
    font-weight: 700;
    text-decoration: none;
}

.app-shell {
    padding: 24px 0 32px;
}

.title-image-wrap {
    display: flex;
    justify-content: center;
    margin-bottom: 24px;
}

.title-image {
    display: block;
    width: min(1000px, 90vw);
    height: auto;
}

.tool-panel,
.library-panel,
.preview-panel {
    min-width: 0;
}

.tool-panel {
    display: grid;
    gap: 16px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--paper);
}

.tool-heading {
    display: flex;
    justify-content: flex-end;
}

.primary-action {
    background: var(--accent);
    color: var(--paper);
    border-color: var(--accent);
    font-weight: 700;
}

.secondary-action,
.inline-action {
    background: var(--paper);
}

.primary-action,
.secondary-action {
    padding: 0 16px;
}

.inline-action,
.compact-action {
    min-height: 32px;
    padding: 0 12px;
}

.upload-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
}

.upload-panel input {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
}

.upload-control {
    display: grid;
    gap: 4px;
    min-height: 70px;
    padding: 14px 16px;
    border: 1px dashed var(--line);
    border-radius: 8px;
    background: #fafafa;
    cursor: pointer;
}

.upload-control span,
.sheet-settings strong,
.empty-state p {
    font-weight: 700;
}

.upload-control small,
.status-line,
.empty-state,
.sheet-settings span {
    color: var(--muted);
}

.sheet-settings {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.sheet-settings > div {
    display: grid;
    gap: 6px;
    min-height: 92px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fafafa;
}

.card-size-setting,
.sheet-size-setting {
    position: relative;
}

.setting-summary-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.size-editor,
.sheet-editor {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    z-index: 20;
    display: grid;
    gap: 8px;
    min-width: 220px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--paper);
}

.size-editor[hidden],
.sheet-editor[hidden] {
    display: none;
}

.size-editor label,
.sheet-editor label {
    display: grid;
    grid-template-columns: 54px 1fr;
    gap: 8px;
    align-items: center;
    color: var(--muted);
}

.size-editor input,
.sheet-editor select,
.quantity-row input {
    height: 34px;
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 0 10px;
    background: var(--paper);
    color: var(--ink);
}

.size-editor-actions {
    display: flex;
    gap: 8px;
}

.status-line {
    margin: 0;
}

.workspace-grid {
    display: grid;
    grid-template-columns: minmax(440px, 620px) minmax(0, 1fr);
    gap: 18px;
    margin-top: 18px;
    align-items: start;
}

.preview-panel {
    position: sticky;
    top: 70px;
}

h2 {
    margin: 0 0 10px;
    font-size: 1rem;
}

.empty-state {
    padding: 16px;
    border: 1px dashed var(--line);
    border-radius: 8px;
    background: var(--paper);
}

.empty-state p {
    margin: 0 0 4px;
    color: var(--ink);
}

.card-library {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.proxy-item {
    display: grid;
    gap: 8px;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--paper);
}

.proxy-item > img {
    width: 100%;
    aspect-ratio: 62 / 87;
    height: auto;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: var(--paper);
    object-fit: contain;
}

.proxy-meta {
    display: grid;
    gap: 6px;
    min-width: 0;
}

.proxy-meta strong {
    color: var(--muted);
    font-size: 0.8rem;
    overflow-wrap: anywhere;
}

.quantity-row {
    display: grid;
    grid-template-columns: 30px minmax(40px, 1fr) 30px 30px;
    gap: 6px;
    align-items: center;
}

.quantity-row button,
.remove-action {
    width: 30px;
    height: 30px;
    min-height: 30px;
    padding: 0;
}

.quantity-row label {
    display: grid;
}

.quantity-row input {
    width: 100%;
    text-align: center;
    appearance: textfield;
    -moz-appearance: textfield;
}

.quantity-row input::-webkit-outer-spin-button,
.quantity-row input::-webkit-inner-spin-button {
    margin: 0;
    -webkit-appearance: none;
}

.remove-action {
    display: inline-grid;
    place-items: center;
    color: var(--danger);
}

.remove-action svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
}

.preview-scroll {
    overflow: auto;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #e9e9e9;
}

.print-area {
    display: grid;
    justify-content: center;
    gap: 12px;
}

.print-sheet {
    width: var(--page-preview-width);
    height: auto;
    aspect-ratio: var(--page-width-mm) / var(--page-height-mm);
    display: grid;
    place-items: center;
    background: var(--paper);
    border: 1px solid var(--line);
}

.sheet-grid {
    display: grid;
    width: var(--preview-grid-width);
    aspect-ratio: var(--preview-grid-ratio);
    grid-template-columns: repeat(var(--cards-per-row), 1fr);
    grid-template-rows: repeat(var(--cards-per-column), 1fr);
}

.card-slot {
    overflow: hidden;
    background: var(--paper);
}

.card-slot img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: fill;
}

.app-footer {
    padding: 16px 0 20px;
    color: var(--muted);
}

@media print {
    html,
    body {
        width: var(--page-width);
        height: auto;
        min-height: 0;
        margin: 0;
        padding: 0;
        background: var(--paper);
    }

    .top-nav,
    .title-image-wrap,
    .tool-panel,
    .library-panel,
    #preview-title,
    .app-footer {
        display: none !important;
    }

    .page-frame,
    main,
    .app-shell,
    .workspace-grid,
    .preview-panel,
    .preview-scroll,
    .print-area {
        display: block;
        width: var(--page-width);
        max-width: none;
        gap: 0;
        margin: 0;
        padding: 0;
        border: 0;
        overflow: visible;
        background: var(--paper);
    }

    .preview-panel {
        position: static;
    }

    .print-sheet {
        position: relative;
        width: var(--page-width);
        height: var(--page-height);
        aspect-ratio: auto;
        border: 0;
        margin: 0;
        overflow: hidden;
        break-after: auto;
        page-break-after: auto;
    }

    .print-sheet::before {
        content: "printed on crekkers.net";
        position: absolute;
        top: 4mm;
        left: 0;
        width: 100%;
        color: #8a8a8a;
        font-size: 10pt;
        line-height: 1;
        text-align: center;
    }

    .print-sheet:not(:last-child) {
        break-after: page;
        page-break-after: always;
    }
}