/* Visual styles share the same simplified layouts and form behavior. */
:root[data-appearance="paper"] {
  --bg: #f3eee4;
  --bg-soft: #eae3d6;
  --surface: #fffaf0;
  --surface-2: #eee6d8;
  --text: #342c25;
  --muted: #786757;
  --faint: #948372;
  --border: #dfd3c0;
  --border-strong: #c3b299;
  --accent: #a34e32;
  --accent-soft: #f4e3d6;
  --accent-text: #914126;
  --free: #51704c;
  --free-soft: #e6eddf;
}

:root[data-appearance="paper"][data-theme="dark"] {
  --bg: #211e1a;
  --bg-soft: #28231e;
  --surface: #2c2721;
  --surface-2: #373028;
  --text: #eee3cf;
  --muted: #b9a991;
  --faint: #978972;
  --border: #44392d;
  --border-strong: #62523f;
  --accent: #e4a47c;
  --accent-soft: #4b3328;
  --accent-text: #edb890;
  --free: #a5bc8d;
  --free-soft: #2a3524;
}

@media (prefers-color-scheme: dark) {
  :root[data-appearance="paper"]:not([data-theme="light"]) {
  --bg: #211e1a;
  --bg-soft: #28231e;
  --surface: #2c2721;
  --surface-2: #373028;
  --text: #eee3cf;
  --muted: #b9a991;
  --faint: #978972;
  --border: #44392d;
  --border-strong: #62523f;
  --accent: #e4a47c;
  --accent-soft: #4b3328;
  --accent-text: #edb890;
  --free: #a5bc8d;
  --free-soft: #2a3524;
}
}

:root[data-appearance="play"] {
  --bg: #f0f2ff;
  --bg-soft: #e6e9fa;
  --surface: #ffffff;
  --surface-2: #e9edff;
  --text: #202641;
  --muted: #5c6380;
  --faint: #7e86a2;
  --border: #d2d8ed;
  --border-strong: #9ca8d1;
  --accent: #4255d4;
  --accent-soft: #e1e6ff;
  --accent-text: #3545b3;
  --free: #137562;
  --free-soft: #def5e9;
}

:root[data-appearance="play"][data-theme="dark"] {
  --bg: #181e32;
  --bg-soft: #202740;
  --surface: #252e48;
  --surface-2: #303b59;
  --text: #f2f2ff;
  --muted: #bac4e1;
  --faint: #8e9bbd;
  --border: #3c496e;
  --border-strong: #6375a4;
  --accent: #b3b9ff;
  --accent-soft: #3c456f;
  --accent-text: #c7ccff;
  --free: #76d6b4;
  --free-soft: #203e3a;
}

@media (prefers-color-scheme: dark) {
  :root[data-appearance="play"]:not([data-theme="light"]) {
  --bg: #181e32;
  --bg-soft: #202740;
  --surface: #252e48;
  --surface-2: #303b59;
  --text: #f2f2ff;
  --muted: #bac4e1;
  --faint: #8e9bbd;
  --border: #3c496e;
  --border-strong: #6375a4;
  --accent: #b3b9ff;
  --accent-soft: #3c456f;
  --accent-text: #c7ccff;
  --free: #76d6b4;
  --free-soft: #203e3a;
}
}


/* Paper: warm stationery, editorial type and fine notebook rules. */
:root[data-appearance="paper"] { --radius: 4px; --radius-sm: 4px; --radius-lg: 8px; --accent-2: var(--accent); --accent-grad: var(--accent); --done: var(--free); }
[data-appearance="paper"] .brand-name,
[data-appearance="paper"] .page-head h2,
[data-appearance="paper"] dialog h3 { font-family: Georgia, "Times New Roman", serif; font-weight: 400; }
[data-appearance="paper"] .page-head h2 { font-size: var(--font-size-title); letter-spacing: -.04em; }
[data-appearance="paper"] .brand-mark { border-radius: 50%; background: var(--accent); }
[data-appearance="paper"] #tabs { border-bottom-style: double; border-bottom-width: 3px; }
[data-appearance="paper"] .tab-btn.active { background: transparent; text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 8px; }
[data-appearance="paper"] .card { border-radius: 4px; box-shadow: 3px 3px 0 var(--bg-soft); }
[data-appearance="paper"] .card h3 { font-family: Georgia, "Times New Roman", serif; font-size: var(--font-size-section); font-weight: 400; }
[data-appearance="paper"] .task-row:is(.schedule-task, .project-task) { border-bottom-style: dotted; }
[data-appearance="paper"] .task-check { border-radius: 4px; }
[data-appearance="paper"] .quick-add input { background: transparent; border-width: 0 0 1px; border-radius: 0; }
[data-appearance="paper"] dialog { border-radius: 8px; }
[data-appearance="paper"] .note-card { border-radius: 3px; }
[data-appearance="paper"] .stat .num { font-family: Georgia, "Times New Roman", serif; }

/* Play: punchy blue, lime details, rounded tiles and tactile borders. */
:root[data-appearance="play"] { --radius: 18px; --radius-sm: 10px; --radius-lg: 22px; --accent-2: var(--accent); --accent-grad: var(--accent); --done: var(--free); --play-lime: #e6f09b; --play-ink: #29314c; }
[data-appearance="play"] .brand-mark { transform: rotate(-8deg); border-radius: 9px; }
[data-appearance="play"] .brand-name { font-weight: 700; letter-spacing: -.04em; }
[data-appearance="play"] .page-head h2 { font-size: var(--font-size-title); font-weight: 750; letter-spacing: -.045em; }
[data-appearance="play"] #tabs { border-bottom: 0; }
[data-appearance="play"] .tab-btn.active { color: var(--play-ink); background: var(--play-lime); border-radius: 999px; }
[data-appearance="play"] .card { border: 1.5px solid var(--border-strong); border-radius: 18px; box-shadow: 3px 4px 0 var(--border); }
[data-appearance="play"] .card h3 { font-weight: 700; }
[data-appearance="play"] .card h3 > .icon { display: inline-block; color: var(--accent); }
[data-appearance="play"] .stat-row { border: 0; gap: 12px; }
[data-appearance="play"] .stat { border: 0; border-radius: 14px; padding: 16px; background: var(--surface-2); }
[data-appearance="play"] .stat:first-child { background: var(--play-lime); color: var(--play-ink); }
[data-appearance="play"] .stat:first-child .lbl { color: #4d5834; }
[data-appearance="play"] .stat .num { font-size: 26px; font-weight: 700; }
[data-appearance="play"] .task-row:is(.schedule-task, .project-task) { border-bottom: 1px dashed var(--border); }
[data-appearance="play"] .task-check { border-width: 2px; }
[data-appearance="play"] .quick-add input { border-radius: 12px; background: var(--surface-2); border-color: transparent; }
[data-appearance="play"] .form-section > summary,
[data-appearance="play"] .page-section > summary { font-weight: 600; }
[data-appearance="play"] dialog { border: 2px solid var(--border-strong); border-radius: 22px; }
[data-appearance="play"] .picker-trigger { border-radius: 12px; }
[data-appearance="play"] .schedule-block-heading { color: var(--accent-text); }

/* Self-contained previews let users compare styles before applying one. */
.appearance-options { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.appearance-option { min-width: 0; padding: 7px; border: 1px solid var(--border); background: var(--surface); border-radius: 10px; cursor: pointer; text-align: left; }
.appearance-option[aria-checked="true"] { border-color: var(--accent); outline: 1px solid var(--accent); outline-offset: 0; background: var(--accent-soft); }
.appearance-name { display: block; padding: 7px 2px 0; font-size: var(--font-size-action); font-weight: 600; }
.appearance-description { display: block; padding: 2px; font-size: var(--font-size-caption); line-height: 1.4; color: var(--muted); }
.appearance-preview { display: block; height: 82px; padding: 10px; border-radius: 5px; background: #f2f3f6; overflow: hidden; }
.preview-nav { display: flex; gap: 4px; padding-bottom: 10px; }
.preview-nav i { width: 13px; height: 3px; border-radius: 2px; background: #c8cbd4; }
.preview-nav i:first-child { background: #5b5bf0; }
.preview-heading { display: block; width: 60%; height: 5px; border-radius: 2px; background: #35394b; margin-bottom: 8px; }
.preview-card { display: grid; gap: 5px; padding: 7px; border: 1px solid #dfe1e8; border-radius: 4px; background: white; }
.preview-card i { display: block; height: 3px; background: #d3d6df; }
.preview-card i:last-child { width: 65%; }
.preview-paper { background: #f3eee4; border-radius: 2px; }
.preview-paper .preview-nav i:first-child { background: #a34e32; }
.preview-paper .preview-heading { background: #78604c; height: 6px; border-radius: 0; }
.preview-paper .preview-card { background: #fffaf0; border-color: #d6c7b0; border-radius: 1px; box-shadow: 2px 2px 0 #e3d9c9; }
.preview-paper .preview-card i { background: #dfd3c0; }
.preview-play { background: #e9edff; border-radius: 8px; }
.preview-play .preview-nav i:first-child { background: #4255d4; }
.preview-play .preview-heading { background: #4255d4; }
.preview-play .preview-card { background: #e6f09b; border: 1px solid #747e5a; border-radius: 7px; box-shadow: 2px 2px 0 #a3accb; }
.preview-play .preview-card i { background: #adb76a; }
@media (max-width: 600px) {
  .appearance-options { gap: 6px; }
  .appearance-option { padding: 5px; }
  .appearance-preview { height: 68px; padding: 8px; }
  .appearance-description { font-size: var(--font-size-caption); }
  [data-appearance="paper"] .page-head h2 { font-size: var(--font-size-title); }
  [data-appearance="play"] .page-head h2 { font-size: var(--font-size-title); }
}