:root {
  --bg: #f6f3ee;
  --surface: #ffffff;
  --surface-2: #efebe4;
  --text: #1d1f24;
  --muted: #6b6f78;
  --line: #e4dfd6;
  --accent: #2f6fde;
  --accent-text: #ffffff;
  --danger: #c4372b;
  --danger-bg: #fbe9e6;
  --warn: #a8640b;
  --ok: #2e8b57;
  --shadow: 0 1px 2px rgb(0 0 0 / .05), 0 4px 14px rgb(0 0 0 / .05);
  --radius: 18px;
  --fs: 17px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181d;
    --surface: #20232a;
    --surface-2: #2a2e36;
    --text: #eceef2;
    --muted: #9aa0ab;
    --line: #333842;
    --accent: #6b9cff;
    --accent-text: #0d1220;
    --danger: #ff7a6b;
    --danger-bg: #3a2220;
    --warn: #f0b354;
    --ok: #5fd08e;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 var(--fs)/1.45 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  -webkit-tap-highlight-color: transparent;
  min-height: 100dvh;
}
button, input, a.btn { font: inherit; color: inherit; }
button { cursor: pointer; }
[hidden] { display: none !important; }
.muted { color: var(--muted); }

/* ---------- Kopfzeile ---------- */
.top {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: calc(env(safe-area-inset-top) + 14px) 16px 12px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(14px);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
}
.top h1 { margin: 0; font-size: 1.6rem; letter-spacing: -.02em; line-height: 1.15; }
.status { margin: 2px 0 0; font-size: .85rem; color: var(--muted); }
.status.error { color: var(--danger); }
.actions { display: flex; gap: 8px; }
.icon-btn {
  width: 48px; height: 48px; border-radius: 50%;
  display: grid; place-items: center;
  border: 0; background: var(--surface); box-shadow: var(--shadow);
  font-size: 1.1rem;
}
.icon-btn svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.icon-btn:active { transform: scale(.94); }
.spinning svg { animation: spin .9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.banner {
  margin: 0 16px 8px; padding: 10px 14px; border-radius: 12px;
  background: var(--danger-bg); color: var(--danger); font-size: .9rem;
}

/* ---------- Liste ---------- */
.list {
  padding: 4px 16px calc(env(safe-area-inset-bottom) + 32px);
  max-width: 1100px; margin: 0 auto;
}
.group { margin-top: 18px; }
.group-head {
  display: flex; align-items: baseline; gap: 8px;
  margin: 0 4px 10px; font-size: .8rem; font-weight: 650;
  text-transform: uppercase; letter-spacing: .06em; color: var(--muted);
}
.group-head .count { font-weight: 500; }
.group.overdue .group-head { color: var(--danger); }
.cards { display: grid; gap: 10px; }
@media (min-width: 820px) {
  .cards { grid-template-columns: repeat(auto-fill, minmax(360px, 1fr)); }
}

.card {
  --hue: 210;
  position: relative;
  display: flex; align-items: flex-start; gap: 14px;
  padding: 16px 14px 16px 20px;
  background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow);
  overflow: hidden;
  transition: opacity .25s, transform .25s;
}
.card::before {
  content: ""; position: absolute; inset: 0 auto 0 0; width: 6px;
  background: hsl(var(--hue) 65% 55%);
}
.card-body { flex: 1; min-width: 0; }
.subject {
  display: inline-block; font-weight: 700; font-size: .95rem;
  color: hsl(var(--hue) 55% 38%);
}
@media (prefers-color-scheme: dark) { .subject { color: hsl(var(--hue) 70% 72%); } }
.due { font-size: .85rem; color: var(--muted); margin-left: 6px; }
.due.overdue { color: var(--danger); font-weight: 600; }
.due.soon { color: var(--warn); font-weight: 600; }
.text { margin: 4px 0 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.remark { margin: 6px 0 0; font-size: .9rem; color: var(--muted); }
.remark::before { content: "Hinweis: "; font-weight: 600; }

.check {
  flex: none; width: 56px; height: 56px; border-radius: 50%;
  border: 2.5px solid var(--line); background: transparent;
  display: grid; place-items: center;
  transition: background .2s, border-color .2s, transform .1s;
}
.check svg { width: 28px; height: 28px; fill: none; stroke: transparent; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.check:active { transform: scale(.9); }
.card.done .check { background: var(--ok); border-color: var(--ok); }
.card.done .check svg { stroke: #fff; }
.card.done { opacity: .6; }
.card.done .text { text-decoration: line-through; text-decoration-color: color-mix(in srgb, var(--text) 40%, transparent); }

details.done-group > summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: center; gap: 8px;
  margin: 0 4px 10px; padding: 8px 0;
  font-size: .8rem; font-weight: 650; text-transform: uppercase; letter-spacing: .06em; color: var(--muted);
}
details.done-group > summary::-webkit-details-marker { display: none; }
details.done-group > summary::after { content: "›"; font-size: 1.2rem; transition: transform .2s; }
details.done-group[open] > summary::after { transform: rotate(90deg); }

.empty {
  text-align: center; padding: 64px 16px; color: var(--muted);
}
.empty .big { font-size: 3rem; margin-bottom: 8px; }
.empty strong { display: block; color: var(--text); font-size: 1.2rem; margin-bottom: 4px; }

/* ---------- Anmeldung ---------- */
.login { min-height: 100dvh; display: grid; place-items: center; padding: 24px 16px; }
.login-box { width: 100%; max-width: 320px; text-align: center; }
.login-icon { width: 72px; height: 72px; border-radius: 18px; }
.login h1 { margin: 12px 0 2px; font-size: 1.6rem; }
.pin-dots { display: flex; justify-content: center; gap: 12px; height: 18px; margin: 18px 0 6px; }
.pin-dots span { width: 14px; height: 14px; border-radius: 50%; background: var(--text); }
.error { color: var(--danger); min-height: 1.4em; margin: 4px 0 10px; font-size: .9rem; }
.keypad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.keypad button {
  height: 64px; border: 0; border-radius: 16px; font-size: 1.5rem; font-weight: 500;
  background: var(--surface); box-shadow: var(--shadow);
}
.keypad button:active { background: var(--surface-2); }
.keypad .ok { background: var(--accent); color: var(--accent-text); }

/* ---------- Einstellungen ---------- */
.sheet {
  width: min(560px, calc(100vw - 32px)); max-height: calc(100dvh - 48px);
  border: 0; border-radius: 22px; padding: 0 20px 20px;
  background: var(--bg); color: var(--text); box-shadow: 0 20px 60px rgb(0 0 0 / .3);
}
.sheet::backdrop { background: rgb(0 0 0 / .35); }
.sheet-head { display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; background: var(--bg); padding: 16px 0 8px; }
.sheet-head h2 { margin: 0; font-size: 1.25rem; }
.setting { background: var(--surface); border-radius: 16px; padding: 16px; margin-top: 12px; box-shadow: var(--shadow); }
.setting h3 { margin: 0 0 4px; font-size: 1.05rem; }
.setting p { margin: 0 0 12px; font-size: .92rem; }
.row { display: flex; flex-wrap: wrap; gap: 8px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 46px; padding: 0 18px; border-radius: 12px;
  border: 1px solid var(--line); background: var(--surface-2);
  text-decoration: none; font-weight: 600; font-size: .95rem;
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn.subtle { background: transparent; color: var(--muted); }
.btn:disabled { opacity: .5; }
.hint { margin-top: 12px; padding: 12px; border-radius: 12px; background: var(--surface-2); font-size: .9rem; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: calc(env(safe-area-inset-bottom) + 20px); transform: translateX(-50%);
  display: flex; align-items: center; gap: 14px;
  max-width: calc(100vw - 32px); padding: 12px 14px 12px 18px; border-radius: 14px;
  background: var(--text); color: var(--bg); box-shadow: 0 8px 30px rgb(0 0 0 / .25);
  font-size: .95rem; z-index: 20;
}
.toast-btn { border: 0; background: transparent; color: var(--accent); font-weight: 700; padding: 6px; }
@media (prefers-color-scheme: light) { .toast-btn { color: #9cc0ff; } }

/* ---------- Großes Display (Touchscreen an der Wand) ---------- */
body.display { --fs: 21px; }
body.display .check { width: 68px; height: 68px; }
body.display .check svg { width: 34px; height: 34px; }
body.display .top h1 { font-size: 2rem; }
body.display .clock { font-size: 2rem; font-weight: 300; font-variant-numeric: tabular-nums; margin-right: 8px; align-self: center; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}