:root {
  color-scheme: light;
  --ink: #18302b;
  --muted: #63746e;
  --paper: #f7f5ef;
  --panel: #fffdf8;
  --line: #d8ded8;
  --accent: #d15f3f;
  --accent-dark: #a8472f;
  --danger: #9c3f3a;
  --secondary-bg: #e9eeea;
  --secondary-hover: #dce5df;
  --secondary-text: var(--ink);
  --secondary-border: var(--line);
  --header-mark: "🌲";
  --header-mark-color: var(--accent);
  --shadow: 0 16px 40px rgba(35, 57, 49, 0.08);
}

body[data-style="coastal"] {
  color-scheme: light;
  --ink: #12364a;
  --muted: #4f6d7a;
  --paper: #edf7fa;
  --panel: #f9fdfd;
  --line: #c7dfe8;
  --accent: #2a9d8f;
  --accent-dark: #1f7d72;
  --danger: #bf4b4b;
  --secondary-bg: #dfeff7;
  --secondary-hover: #cfe3ee;
  --secondary-text: var(--ink);
  --secondary-border: var(--line);
  --header-mark: "🐚";
  --header-mark-color: #4ea7b6;
  --shadow: 0 16px 40px rgba(14, 58, 72, 0.08);
}

body[data-style="berry"] {
  color-scheme: light;
  --ink: #3d1b2d;
  --muted: #7d5c6f;
  --paper: #fdf0f4;
  --panel: #fffafc;
  --line: #ecd6de;
  --accent: #c75d76;
  --accent-dark: #9d3f55;
  --danger: #aa3a4d;
  --secondary-bg: #f1dde5;
  --secondary-hover: #e4ced6;
  --secondary-text: var(--ink);
  --secondary-border: var(--line);
  --header-mark: "🌸";
  --header-mark-color: #c75d76;
  --shadow: 0 16px 40px rgba(61, 27, 45, 0.08);
}

body[data-style="dark"] {
  color-scheme: dark;
  --ink: #edf3ff;
  --muted: #b4cada;
  --paper: #111a22;
  --panel: #18232d;
  --line: #2d3c4a;
  --accent: #6bb7ff;
  --accent-dark: #4a90d9;
  --danger: #ff7b7b;
  --secondary-bg: #243543;
  --secondary-hover: #314b60;
  --secondary-text: var(--ink);
  --secondary-border: var(--line);
  --header-mark: "☾";
  --header-mark-color: #8fb5ff;
  --shadow: 0 18px 42px rgba(0, 0, 0, 0.28);
}

body[data-style="horror"] {
  color-scheme: dark;
  --ink: #f3ecec;
  --muted: #d0a7a7;
  --paper: #0d0d0d;
  --panel: #171414;
  --line: #402f2f;
  --accent: #b70d1f;
  --accent-dark: #7f0c17;
  --danger: #ef4444;
  --secondary-bg: #271b1b;
  --secondary-hover: #3a2727;
  --secondary-text: var(--ink);
  --secondary-border: var(--line);
  --header-mark: "🕷";
  --header-mark-color: #c32d3d;
  --shadow: 0 18px 42px rgba(0, 0, 0, 0.35);
}

body[data-style="spring"] {
  color-scheme: light;
  --ink: #234631;
  --muted: #597763;
  --paper: #f3fff4;
  --panel: #fbfffb;
  --line: #cfe3d0;
  --accent: #6bbf59;
  --accent-dark: #4f9d43;
  --danger: #c75d5d;
  --secondary-bg: #e7f7e4;
  --secondary-hover: #d5f0d0;
  --secondary-text: var(--ink);
  --secondary-border: var(--line);
  --header-mark: "🌼";
  --header-mark-color: #67a65a;
  --shadow: 0 16px 40px rgba(41, 92, 62, 0.09);
}

body[data-style="summer"] {
  color-scheme: light;
  --ink: #1d3c5f;
  --muted: #5f7995;
  --paper: #fff9ec;
  --panel: #fffdf8;
  --line: #f0d7a5;
  --accent: #f4a261;
  --accent-dark: #d88239;
  --danger: #d96c5b;
  --secondary-bg: #f9ebc8;
  --secondary-hover: #f2dc97;
  --secondary-text: var(--ink);
  --secondary-border: var(--line);
  --header-mark: "☀";
  --header-mark-color: #e69a3d;
  --shadow: 0 16px 40px rgba(61, 93, 123, 0.09);
}

body[data-style="autumn"] {
  color-scheme: light;
  --ink: #3d2a1d;
  --muted: #7e6356;
  --paper: #fff4ea;
  --panel: #fffaf4;
  --line: #e7d0b6;
  --accent: #bf6b2b;
  --accent-dark: #8d4b1d;
  --danger: #b34432;
  --secondary-bg: #f2e0cf;
  --secondary-hover: #e7c7aa;
  --secondary-text: var(--ink);
  --secondary-border: var(--line);
  --header-mark: "🍁";
  --header-mark-color: #9a5a2d;
  --shadow: 0 16px 40px rgba(91, 53, 34, 0.08);
}

body[data-style="winter"] {
  color-scheme: light;
  --ink: #163d58;
  --muted: #5a7b94;
  --paper: #edf6ff;
  --panel: #f9fcff;
  --line: #cfe5f4;
  --accent: #4d8ecf;
  --accent-dark: #2a6ea8;
  --danger: #d16282;
  --secondary-bg: #dfeeff;
  --secondary-hover: #cfe4fb;
  --secondary-text: var(--ink);
  --secondary-border: var(--line);
  --header-mark: "❄";
  --header-mark-color: #87baf2;
  --shadow: 0 16px 40px rgba(15, 53, 77, 0.08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: radial-gradient(circle at top right, #e6eee5 0, transparent 34rem), var(--paper);
  color: var(--ink);
  font-family: Georgia, 'Times New Roman', serif;
}

body[data-style="coastal"] {
  background: radial-gradient(circle at top right, #dfeff7 0, transparent 34rem), var(--paper);
}

body[data-style="berry"] {
  background: radial-gradient(circle at top right, #f3dfe7 0, transparent 34rem), var(--paper);
}

body[data-style="dark"] {
  background: radial-gradient(circle at top right, #1d2d39 0, transparent 34rem), var(--paper);
}

body[data-style="horror"] {
  background: radial-gradient(circle at top right, #2e1219 0, transparent 34rem), var(--paper);
}

body[data-style="spring"] {
  background: radial-gradient(circle at top right, #e6f9df 0, transparent 34rem), var(--paper);
}

body[data-style="summer"] {
  background: radial-gradient(circle at top right, #ffe7b8 0, transparent 34rem), var(--paper);
}

body[data-style="autumn"] {
  background: radial-gradient(circle at top right, #f3d1a5 0, transparent 34rem), var(--paper);
}

body[data-style="winter"] {
  background: radial-gradient(circle at top right, #dfeeff 0, transparent 34rem), var(--paper);
}

.shell {
  width: min(900px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 4.5rem 0;
}

.shell.narrow { width: min(680px, calc(100% - 2rem)); }

.page-header {
  position: relative;
  margin-bottom: 2.5rem;
}
.page-header::after {
  content: var(--header-mark);
  position: absolute;
  right: 0;
  top: -2.8rem;
  font-size: 3.2rem;
  line-height: 1;
  font-weight: 700;
  color: var(--header-mark-color);
  opacity: 0.5;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.08));
  pointer-events: none;
}
@media (max-width: 640px) {
  .page-header::after {
    top: -1.6rem;
    font-size: 2.7rem;
  }
}
.folder-header { border-bottom: 1px solid var(--line); padding-bottom: 1rem; }
.folder-header-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 2rem; }
.folder-navigation { min-width: 0; flex: 1; }
.eyebrow {
  margin: 0 0 .7rem;
  color: var(--accent-dark);
  font-family: 'Trebuchet MS', sans-serif;
  font-size: .75rem;
  font-weight: bold;
  letter-spacing: .12em;
  text-transform: uppercase;
}

h1, h2, p { margin-top: 0; }
h1 { margin-bottom: .5rem; font-size: clamp(2.8rem, 8vw, 5.5rem); line-height: .95; }
h2 { font-size: 1.3rem; }
.intro { margin-bottom: 0; color: var(--muted); font-size: 1.15rem; }
.breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .45rem;
  color: var(--muted);
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 1.2rem;
  line-height: 1.5;
}
.breadcrumbs a { color: var(--accent-dark); text-decoration: none; }
.breadcrumbs a:hover { text-decoration: underline; }
.breadcrumbs span:last-child { color: var(--ink); font-weight: bold; }
.debug-button { margin-top: 1rem; background: transparent; color: var(--muted); border: 1px solid var(--line); }
.debug-button:hover { background: #e9eeea; color: var(--ink); }

.composer, .note {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.composer { padding: 1.5rem; }
.helper { margin-bottom: 0; color: var(--muted); font-size: .9rem; }
.type-label {
  display: inline-block;
  margin-right: .45rem;
  color: var(--accent-dark);
  font-family: 'Trebuchet MS', sans-serif;
  font-size: .7rem;
  font-weight: bold;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.optional-label { color: var(--muted); font-size: .75rem; font-weight: normal; }
.composer input[type="datetime-local"] {
  display: block;
  width: 100%;
  margin: 0 0 1rem;
  border: 1px solid var(--line);
  padding: .7rem .8rem;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
}
.task-repeat-toggle { display: flex; align-items: center; gap: .55rem; margin: .8rem 0 .45rem; color: var(--ink); cursor: pointer; }
.task-repeat-toggle input[type="checkbox"] { width: 1rem; height: 1rem; margin: 0; accent-color: var(--accent); }
.task-repeat-interval { display: flex; align-items: center; gap: .5rem; margin: 0 0 1rem 1.55rem; color: var(--muted); font-family: 'Trebuchet MS', sans-serif; font-size: .85rem; }
.task-repeat-interval label { margin: 0; }
.task-repeat-interval input[type="number"] { width: 5rem; border: 1px solid var(--line); padding: .45rem; background: var(--panel); color: var(--ink); font: inherit; }
.task-repeat-interval input:disabled { opacity: .55; }
.task-reopen-control { margin: 1rem 0; padding-top: .6rem; border-top: 1px solid var(--line); }
.task-meta-line { display: flex; align-items: baseline; gap: .75rem; margin: 0 0 1.1rem; color: var(--muted); font-family: 'Trebuchet MS', sans-serif; font-size: .9rem; }
.task-repeat-display { display: inline-flex; align-items: baseline; gap: .25rem; margin-left: auto; color: var(--ink); white-space: nowrap; }
.task-state-indicator { display: inline-block; flex: none; width: .72rem; height: .72rem; border-radius: 50%; vertical-align: middle; }
.task-state--done { background: #8a9199; }
.task-state--tbd { background: #329653; }
.task-state--soon { background: #e5b52f; }
.task-state--overdue { background: #d4473c; }
.type-info-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0 .25rem 0 0;
  color: inherit;
  line-height: 1;
}
.dummy-note-content {
  padding: 1.25rem;
  border-left: 4px solid var(--accent);
  background: var(--secondary-bg);
  font-size: 1.2rem;
  line-height: 1.6;
}
.inline-form { display: flex; align-items: end; gap: .6rem; }
.inline-form input { min-width: 0; border: 1px solid var(--line); padding: .7rem; color: var(--ink); font: inherit; }
.inline-form input { width: 12rem; }
label {
  display: block;
  margin-bottom: .5rem;
  color: var(--muted);
  font-family: 'Trebuchet MS', sans-serif;
  font-size: .85rem;
  font-weight: bold;
}
textarea {
  display: block;
  width: 100%;
  min-height: 8rem;
  resize: vertical;
  border: 1px solid var(--line);
  padding: .9rem;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 1rem;
  line-height: 1.5;
}
textarea:focus { outline: 2px solid #e9a28d; outline-offset: 2px; }
form > button[type="submit"] { display: block; margin: 1rem 0 0 auto; }
button, .button {
  display: inline-block;
  border: 0;
  padding: .7rem 1rem;
  background: var(--secondary-bg);
  color: var(--secondary-text);
  border: 1px solid var(--secondary-border);
  cursor: pointer;
  font-family: 'Trebuchet MS', sans-serif;
  font-size: .8rem;
  font-weight: bold;
  text-decoration: none;
}

select {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  padding: .7rem .8rem;
  font: inherit;
}

.style-description {
  margin: 1rem 0 0;
  color: var(--muted);
  line-height: 1.5;
}
.icon-button { display: inline-flex; align-items: center; justify-content: center; width: 2.6rem; min-width: 2.6rem; height: 2.6rem; padding: 0; font-size: 1.1rem; line-height: 1; }
button:hover, .button:hover { background: var(--secondary-hover); }
.primary {
  background: var(--accent);
  color: white;
  border-color: transparent;
}
.primary:hover { background: var(--accent-dark); }
.secondary {
  background: var(--secondary-bg);
  color: var(--secondary-text);
  border: 1px solid var(--secondary-border);
}
.secondary:hover { background: var(--secondary-hover); }
.danger { background: var(--danger); color: white; }
.danger:hover { background: #702a27; color: white; }

.error { margin: 0 0 1rem; color: var(--danger); font-family: 'Trebuchet MS', sans-serif; font-size: .9rem; }
.multiline-error { white-space: pre-line; line-height: 1.5; }
.field-warning { margin: .45rem 0 0; color: var(--danger); font-family: 'Trebuchet MS', sans-serif; font-size: .8rem; line-height: 1.4; }
button:disabled { cursor: not-allowed; opacity: .5; }
.button.task-validation-button { background: #328a52; border-color: #328a52; color: #fff; }
.button.task-validation-button:hover { background: #256c40; border-color: #256c40; color: #fff; }
.button.task-validation-button:disabled { cursor: wait; opacity: .6; }
.notes { margin-top: 2.5rem; }
.section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; }
.section-heading span { color: var(--muted); font-family: 'Trebuchet MS', sans-serif; font-size: .8rem; }
.parent-drop-target { margin: 0; border: 1px dashed transparent; padding: .6rem; color: var(--ink); touch-action: pan-y; }
.parent-drop-target.drag-target { border-color: var(--accent); box-shadow: 0 0 0 2px #e9a28d, var(--shadow); }
.valid-drop-target { border-color: #328a52 !important; box-shadow: 0 0 0 2px rgba(50, 138, 82, .35), var(--shadow) !important; }
.invalid-drop-target { border-color: var(--danger) !important; box-shadow: 0 0 0 2px rgba(156, 63, 58, .35), var(--shadow) !important; }
.parent-drop-target.drag-target h2 { font-size: .8rem; }
.section-heading h2 { margin-bottom: 0; font-size: 1.8rem; }
.folder-type-summary { margin: .35rem 0 0; color: var(--muted); font-family: 'Trebuchet MS', sans-serif; font-size: .75rem; line-height: 1.4; }
.task-summary-badges { display: inline-flex; align-items: center; gap: .4rem; flex: none; white-space: nowrap; }
.task-summary-badge { display: inline-flex; align-items: center; justify-content: center; min-width: 1.85rem; height: 1.85rem; padding: 0 .3rem; border: 1.5px solid currentColor; border-radius: 50%; background: transparent; font-family: 'Trebuchet MS', sans-serif; font-size: .78rem; font-weight: bold; line-height: 1; font-variant-numeric: tabular-nums; }
.task-summary--overdue { color: #d4473c; }
.task-summary--soon { color: #967200; border-color: #e5b52f; }
.section-heading .task-summary--overdue { color: #d4473c; }
.section-heading .task-summary--soon { color: #967200; border-color: #e5b52f; }
.folder-actions { display: flex; align-items: flex-end; flex-direction: column; gap: .35rem; }
.folder-action-row { display: flex; align-items: stretch; gap: 1rem; }
.folder-actions .inline-form { align-items: stretch; }
.folder-actions .inline-form input,
.folder-actions .inline-form button,
.folder-actions > .button { height: 2.6rem; }
.folder-actions .inline-form input,
.folder-actions .inline-form button { margin: 0; }
.folder-actions > .button { display: inline-flex; align-items: center; }
.folder-actions > span { align-self: flex-end; color: var(--muted); font-family: 'Trebuchet MS', sans-serif; font-size: .8rem; }
dialog { width: min(26rem, calc(100% - 2rem)); border: 1px solid var(--line); padding: 1.5rem; background: var(--panel); color: var(--ink); box-shadow: var(--shadow); cursor: default; }
dialog::backdrop { background: rgba(24, 48, 43, .35); }
dialog h2 { margin-bottom: 1.25rem; }
dialog label { margin-bottom: .5rem; }
dialog input { width: 100%; border: 1px solid var(--line); padding: .7rem; color: var(--ink); font: inherit; cursor: text; }
.dialog-actions { display: flex; justify-content: flex-end; gap: .7rem; margin-top: 1.25rem; }
.dialog-actions .secondary { border: 1px solid var(--line); }
.empty { padding: 2rem 0; color: var(--muted); }
.note-list { display: grid; gap: 1rem; margin-top: 1.25rem; }
.note { padding: 1.35rem; }
.card-icon { margin-right: .25rem; }
.card-description { display: block; margin-top: .35rem; color: var(--muted); font-family: 'Trebuchet MS', sans-serif; font-size: .72rem; font-weight: normal; line-height: 1.4; }
.folder-card--dummy { border-left: 4px solid var(--accent); background: color-mix(in srgb, var(--panel) 88%, var(--accent)); }
.note-card--dummy { border-left: 4px solid var(--accent); background: color-mix(in srgb, var(--panel) 92%, var(--accent)); }
.note-card--dummy .note-preview { font-size: 1.05rem; }
.note-card--task { border-left: 4px solid var(--accent); }
.folder-card--tasks { border-left: 4px solid var(--accent); }
.note-content { white-space: pre-wrap; line-height: 1.55; }
.note-preview { display: flex; align-items: baseline; gap: .6rem; min-width: 0; margin-bottom: 1rem; }
.note-preview-text { display: block; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.task-card-due { flex: none; margin-left: auto; color: var(--muted); font-family: 'Trebuchet MS', sans-serif; font-size: .78rem; white-space: nowrap; }
.read-note { background: var(--panel); border: 1px solid var(--line); box-shadow: var(--shadow); padding: 1.5rem; }
.read-note-content { margin-bottom: 2rem; white-space: pre-wrap; line-height: 1.65; }
.read-note > time { color: var(--muted); font-family: 'Trebuchet MS', sans-serif; font-size: .75rem; }
.folder-row { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.item-heading { margin-bottom: 1rem; }
.folder-row .item-heading { margin-bottom: 0; color: var(--ink); font-size: 1.2rem; font-weight: bold; }
.folder-row .item-heading .task-summary-badges { margin-left: .45rem; vertical-align: middle; }
.section-heading .task-summary-badges { align-self: flex-start; margin-top: .15rem; }
.task-folder-section { margin-top: 1.4rem; }
.task-folder-section h3 { margin: 0 0 .6rem; color: var(--muted); font-family: 'Trebuchet MS', sans-serif; font-size: .95rem; }
.task-folder-section .empty { padding: .5rem 0; }
.task-folder-section .note-list { margin-top: 0; }
.supporting-notes { padding-top: 1.2rem; border-top: 1px solid var(--line); }
.folder-item, .note-item { cursor: grab; touch-action: pan-y; user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; }
.folder-item:active, .note-item:active { cursor: grabbing; }
.dragging { opacity: .45; }
.touch-drag-preview { position: fixed; z-index: 1000; margin: 0; opacity: .8; pointer-events: none; box-shadow: 0 10px 24px rgba(35, 57, 49, .2); transform: rotate(2deg); }
.drag-target { border-color: var(--accent); box-shadow: 0 0 0 2px #e9a28d, var(--shadow); }
.invalid-drop-target { cursor: not-allowed; }
.drop-feedback { position: fixed; z-index: 1100; left: 50%; bottom: 1.5rem; transform: translateX(-50%); max-width: min(24rem, calc(100% - 2rem)); padding: .75rem 1rem; background: var(--danger); color: white; box-shadow: var(--shadow); font-family: 'Trebuchet MS', sans-serif; font-size: .85rem; font-weight: bold; text-align: center; }
.note-footer { display: flex; align-items: center; justify-content: space-between; gap: 1rem; color: var(--muted); font-family: 'Trebuchet MS', sans-serif; font-size: .75rem; }
.actions, .form-actions { display: flex; align-items: center; gap: .7rem; }
.actions form,
.form-actions form { margin: 0; display: flex; align-items: center; }
.actions form > button[type="submit"],
.form-actions form > button[type="submit"] { margin: 0; }
.form-actions { justify-content: flex-end; margin-top: 1rem; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@media (max-width: 600px) {
  .shell { padding: 2.5rem 0; }
  .folder-header-top { flex-direction: column; gap: 1rem; }
  .folder-navigation, .folder-actions { width: 100%; }
  .section-heading { align-items: baseline; }
  .folder-actions { align-items: stretch; }
  .folder-action-row { flex-wrap: wrap; }
  .inline-form input { flex: 1; width: auto; }
  .folder-row { align-items: flex-start; flex-direction: column; gap: 1rem; }
  .note-footer { align-items: flex-start; flex-direction: column; }
  .actions { width: 100%; justify-content: flex-end; }
}