:root {
  --bg: #0b1020;
  --panel: rgba(255, 255, 255, 0.06);
  --panel-2: rgba(255, 255, 255, 0.08);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.68);
  --line: rgba(255, 255, 255, 0.14);
  --primary: #7c5cff;
  --primary-2: #32d583;
  --danger: #ff4d6d;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  --radius: 18px;
  --radius-sm: 12px;
  --container: 1024px;
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica,
    Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

html[data-theme="light"] {
  --bg: #f7f8fc;
  --panel: rgba(10, 20, 40, 0.05);
  --panel-2: rgba(10, 20, 40, 0.08);
  --text: rgba(10, 20, 40, 0.92);
  --muted: rgba(10, 20, 40, 0.64);
  --line: rgba(10, 20, 40, 0.14);
  --primary: #3b5bff;
  --primary-2: #12b886;
  --danger: #e03131;
  --shadow: 0 18px 40px rgba(10, 20, 40, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: radial-gradient(1200px 800px at 18% 12%, rgba(124, 92, 255, 0.35), transparent 55%),
    radial-gradient(900px 600px at 80% 30%, rgba(50, 213, 131, 0.22), transparent 55%),
    radial-gradient(900px 500px at 65% 92%, rgba(255, 77, 109, 0.14), transparent 60%),
    var(--bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body > main {
  flex: 1 0 auto;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: color-mix(in oklab, var(--bg) 84%, transparent);
  border-bottom: 1px solid var(--line);
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.topbar {
  padding: 14px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.brand__dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--primary) 25%, transparent);
}

.topbar__actions {
  display: inline-flex;
  gap: 10px;
  align-items: center;
}

.btn {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 999px;
  font-weight: 650;
  letter-spacing: 0.2px;
  cursor: pointer;
  transition: transform 140ms ease, background 140ms ease, border-color 140ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: color-mix(in oklab, var(--line) 70%, var(--primary) 30%);
  background: var(--panel-2);
}

.btn:active {
  transform: translateY(0px);
}

.btn--primary {
  border-color: color-mix(in oklab, var(--primary) 55%, var(--line));
  background: linear-gradient(135deg, color-mix(in oklab, var(--primary) 85%, transparent), color-mix(in oklab, var(--primary-2) 75%, transparent));
}

.btn--danger {
  border-color: color-mix(in oklab, var(--danger) 55%, var(--line));
  background: color-mix(in oklab, var(--danger) 16%, var(--panel));
}

.btn--ghost {
  background: transparent;
}

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 22px;
  padding: 34px 0 18px;
  align-items: center;
}

.hero__title {
  margin: 0 0 10px;
  font-size: clamp(30px, 3.6vw, 46px);
  letter-spacing: -0.6px;
  line-height: 1.05;
}

.hero__subtitle {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 12px 0 10px;
}

.hero__hint {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.card {
  border: 1px solid var(--line);
  background: color-mix(in oklab, var(--panel) 80%, transparent);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 18px;
  overflow: hidden;
  position: relative;
}

.card::before {
  content: "";
  position: absolute;
  inset: -120px -100px auto auto;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle at 30% 30%, rgba(124, 92, 255, 0.45), transparent 60%);
  transform: rotate(18deg);
}

.card__tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-weight: 650;
  font-size: 13px;
  margin-bottom: 10px;
}

.card__text {
  position: relative;
  margin: 0;
  font-size: 18px;
  line-height: 1.55;
  letter-spacing: 0.1px;
  min-height: 84px;
}

.card__meta {
  margin-top: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
  color: var(--muted);
  font-size: 12px;
}

.card__pill {
  border: 1px solid var(--line);
  padding: 6px 10px;
  border-radius: 999px;
  background: color-mix(in oklab, var(--panel) 70%, transparent);
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  padding: 18px 0;
}

.panel {
  border: 1px solid var(--line);
  background: color-mix(in oklab, var(--panel) 75%, transparent);
  border-radius: var(--radius);
  padding: 18px;
}

.panel__title {
  margin: 0 0 10px;
  font-size: 16px;
}

.list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.7;
}

.list--ordered {
  padding-left: 20px;
}

.todo {
  border: 1px solid var(--line);
  background: color-mix(in oklab, var(--panel) 75%, transparent);
  border-radius: var(--radius);
  padding: 18px;
  margin: 10px 0 18px;
}

.todo__head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.todo__title {
  margin: 0;
  font-size: 16px;
}

.todo__actions {
  display: inline-flex;
  gap: 10px;
  flex-wrap: wrap;
}

.todo__form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  margin-top: 12px;
}

.input {
  width: 100%;
  border: 1px solid var(--line);
  background: color-mix(in oklab, var(--panel) 75%, transparent);
  color: var(--text);
  padding: 11px 12px;
  border-radius: 12px;
  outline: none;
}

.input:focus {
  border-color: color-mix(in oklab, var(--primary) 55%, var(--line));
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--primary) 22%, transparent);
}

.todo__stats {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 12px;
}

.todo__list {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  display: grid;
  gap: 10px;
}

.todoItem {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px 12px;
  background: color-mix(in oklab, var(--panel) 80%, transparent);
}

.todoItem__text {
  margin: 0;
  line-height: 1.4;
}

.todoItem__text--done {
  color: var(--muted);
  text-decoration: line-through;
  text-decoration-thickness: 2px;
}

.iconBtn {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: transparent;
  color: var(--muted);
  padding: 8px 10px;
  cursor: pointer;
  transition: background 140ms ease, transform 140ms ease, border-color 140ms ease;
}

.iconBtn:hover {
  transform: translateY(-1px);
  background: color-mix(in oklab, var(--panel) 70%, transparent);
  border-color: color-mix(in oklab, var(--line) 70%, var(--primary) 30%);
  color: var(--text);
}

.muted {
  color: var(--muted);
}

.link {
  color: var(--muted);
  text-decoration: underline;
  text-decoration-color: color-mix(in oklab, var(--muted) 55%, transparent);
  text-underline-offset: 3px;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 14px 0;
  margin-top: 18px;
}

.footer__inner {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 14px;
  text-align: center;
}

.footer__inner .muted,
.footer__inner .link {
  font-size: 12px;
  line-height: 1.5;
}

.footer__inner .link {
  text-decoration: none;
  border-bottom: 1px dashed color-mix(in oklab, var(--muted) 45%, transparent);
}

.footer__inner .link:hover {
  color: var(--text);
  border-bottom-color: color-mix(in oklab, var(--text) 45%, transparent);
}

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

kbd {
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  background: color-mix(in oklab, var(--panel) 75%, transparent);
  padding: 2px 7px;
  border-radius: 10px;
  font-size: 0.9em;
}

.palette {
  width: min(720px, calc(100% - 24px));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0;
  background: color-mix(in oklab, var(--bg) 86%, transparent);
  box-shadow: var(--shadow);
}

.palette::backdrop {
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(6px);
}

.palette__shell {
  display: grid;
  gap: 10px;
  padding: 14px;
}

.palette__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.palette__title {
  font-weight: 750;
}

.palette__list {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 8px;
  display: grid;
  gap: 6px;
  max-height: 300px;
  overflow: auto;
  background: color-mix(in oklab, var(--panel) 75%, transparent);
}

.paletteItem {
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 10px 10px;
  cursor: pointer;
  display: grid;
  gap: 2px;
}

.paletteItem:hover {
  background: color-mix(in oklab, var(--panel) 70%, transparent);
}

.paletteItem[aria-selected="true"] {
  border-color: color-mix(in oklab, var(--primary) 60%, transparent);
  background: color-mix(in oklab, var(--primary) 12%, transparent);
}

.paletteItem__title {
  font-weight: 700;
}

.paletteItem__desc {
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 22px;
  }
  .grid {
    grid-template-columns: 1fr;
  }
}