/* Watermarker styles. Plain CSS, no preprocessor. Two-column desktop
   layout that stacks on narrow viewports. */

:root {
    --bg: #f5f6f8;
    --panel: #ffffff;
    --border: #e1e4e8;
    --text: #1f2328;
    --muted: #6a737d;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --danger: #c92a2a;
    --warn: #b45309;
    --ok: #137333;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 4px 12px rgba(0, 0, 0, 0.05);
    --radius: 8px;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu,
        Cantarell, sans-serif;
    font-size: 14px;
    line-height: 1.45;
}

header.site-header {
    padding: 16px 24px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}
header.site-header h1 {
    font-size: 16px;
    margin: 0;
    font-weight: 600;
}
header.site-header .privacy-note {
    font-size: 12px;
    color: var(--muted);
}
header.site-header .privacy-note strong {
    color: var(--ok);
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
    display: grid;
    /* Left column carries files + settings (the things the user
     actively configures); right column is just the preview, so a
     slightly narrower right column reads better. */
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: 24px;
    align-items: start;
}
@media (max-width: 900px) {
    main {
        grid-template-columns: 1fr;
    }
}

/* Pin the preview near the top of the viewport on desktop so it
   stays visible while the user scrolls the left column. On narrow
   viewports (single-column) sticky would be visually awkward, so we
   only enable it above the breakpoint. */
@media (min-width: 901px) {
    .preview-panel {
        position: sticky;
        top: 24px;
    }
}

.panel {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}
.panel + .panel {
    margin-top: 20px;
}
.panel h2 {
    margin: 0 0 12px;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--muted);
    font-weight: 600;
}

/* Drop zone */
.drop-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 28px;
    text-align: center;
    background: #fafbfc;
    cursor: pointer;
    transition:
        border-color 0.15s,
        background 0.15s;
}
.drop-zone:hover,
.drop-zone.drag {
    border-color: var(--accent);
    background: #eff6ff;
}
.drop-zone p {
    margin: 0 0 12px;
    color: var(--muted);
}

/* File list */
.file-list {
    list-style: none;
    margin: 16px 0 0;
    padding: 0;
}
.file-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 8px;
    background: #fff;
}
.file-main {
    min-width: 0;
    flex: 1;
}
.file-name {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.file-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 4px;
    font-size: 12px;
    color: var(--muted);
    align-items: center;
}
.file-actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}

.empty-state {
    color: var(--muted);
    font-size: 13px;
    text-align: center;
    padding: 16px 0 0;
}

/* Status badges */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 500;
    background: #eef0f2;
    color: var(--muted);
}
.badge-ready {
    background: #dbeafe;
    color: #1e40af;
}
.badge-processing {
    background: #fef3c7;
    color: #92400e;
}
.badge-done {
    background: #d1fae5;
    color: #065f46;
}
.badge-encrypted,
.badge-invalid,
.badge-error {
    background: #fee2e2;
    color: #991b1b;
}
.badge-inspecting {
    background: #e0e7ff;
    color: #3730a3;
}
.warn {
    color: var(--warn);
}

/* Settings panel */
.settings-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}
.setting-row {
    display: grid;
    grid-template-columns: 110px 1fr auto;
    align-items: center;
    gap: 12px;
}
.setting-row label.field-label {
    color: var(--muted);
    font-size: 12px;
    font-weight: 500;
}
.setting-row .value {
    font-variant-numeric: tabular-nums;
    font-size: 12px;
    color: var(--muted);
    min-width: 40px;
    text-align: right;
}
.setting-row input[type="text"],
.setting-row input[type="number"] {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font: inherit;
}
.setting-row input[type="range"] {
    width: 100%;
}
.setting-row input[type="color"] {
    width: 48px;
    height: 28px;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: none;
}

.layout-options {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    grid-column: 2 / span 2;
}
.layout-options label {
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    background: #fff;
}
.layout-options input[type="radio"] {
    display: none;
}
.layout-options input[type="radio"]:checked + span {
    color: var(--accent);
    font-weight: 600;
}
.layout-options label:has(input:checked) {
    border-color: var(--accent);
    background: #eff6ff;
}

.preset-row {
    grid-column: 2 / span 2;
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

/* Preview */
.preview-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 612 / 792;
    background: #eef0f2;
    border-radius: var(--radius);
    overflow: hidden;
}
#preview-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* Buttons */
.btn {
    padding: 8px 14px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text);
    font: inherit;
    cursor: pointer;
    transition:
        background 0.1s,
        border-color 0.1s;
}
.btn:hover {
    background: #f6f8fa;
}
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}
.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}
.btn-small {
    padding: 4px 10px;
    font-size: 12px;
}
.btn-ghost {
    border-color: transparent;
    background: transparent;
    color: var(--muted);
}
.btn-ghost:hover {
    background: #f6f8fa;
    color: var(--text);
}

.actions-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 16px;
    align-items: center;
}
.inline-error {
    color: var(--danger);
    font-size: 13px;
}
.inline-warning {
    color: var(--warn);
    font-size: 13px;
    margin-top: 8px;
}

footer.site-footer {
    text-align: center;
    font-size: 12px;
    color: var(--muted);
    padding: 16px;
}
footer.site-footer a {
    color: var(--muted);
}

/* Visually hidden but accessible */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}