:root {
  --bg: #f6f4ef; --card: #ffffff; --line: #e6e2d8; --text: #1d1d1f; --muted: #6d6a63;
  --accent: #2f6f5e; --accent-soft: #e2efe9; --danger: #b3412f; --warn: #a86b12;
  --k-aufgabe: #3b6fd1; --k-lernen: #7a4fd0; --k-termin: #c2552c; --k-pause: #8a8a8a;
  --k-sport: #1f9a6a; --k-essen: #c98f12; --k-sonstiges: #5f6b7a; --k-kalender: #c2552c; --k-sr: #7a4fd0;
  --radius: 14px; --shadow: 0 1px 2px rgba(0,0,0,.05), 0 4px 14px rgba(0,0,0,.04);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16171b; --card: #1f2126; --line: #30333a; --text: #ecebe7; --muted: #9b9a95;
    --accent: #6fc2a6; --accent-soft: #233a33; --danger: #ef7a66; --warn: #e2a84a;
    --shadow: none; color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body { font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-font-smoothing: antialiased; }
button, input, textarea, select { font: inherit; color: inherit; }
#app { max-width: 640px; margin: 0 auto; padding: 16px 16px calc(96px + env(safe-area-inset-bottom)); }

h1 { font-size: 26px; margin: 4px 0 2px; letter-spacing: -.02em; }
h2 { font-size: 15px; margin: 22px 0 8px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .05em; }
.muted { color: var(--muted); } .small { font-size: 13px; }
.row { display: flex; gap: 8px; align-items: center; } .grow { flex: 1; min-width: 0; }
.stack > * + * { margin-top: 10px; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; box-shadow: var(--shadow); }
.card + .card { margin-top: 10px; }

input[type=text], input[type=email], input[type=password], input[type=url], input[type=number], input[type=date], input[type=time], textarea, select {
  width: 100%; background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; outline: none;
}
textarea { resize: vertical; min-height: 84px; }
input:focus, textarea:focus, select:focus { border-color: var(--accent); }
label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }

.btn { border: 0; border-radius: 10px; padding: 10px 14px; background: var(--accent); color: #fff; font-weight: 600; cursor: pointer; white-space: nowrap; }
@media (prefers-color-scheme: dark) { .btn { color: #10221c; } }
.btn.secondary { background: var(--accent-soft); color: var(--accent); }
.btn.ghost { background: transparent; color: var(--muted); padding: 6px 8px; }
.btn.danger { background: transparent; color: var(--danger); }
.btn:disabled { opacity: .55; cursor: default; }
.btn.block { width: 100%; }
.icon-btn { border: 0; background: transparent; color: var(--muted); width: 34px; height: 34px; border-radius: 8px; cursor: pointer; font-size: 18px; line-height: 1; }
.icon-btn:hover { background: var(--accent-soft); color: var(--accent); }

/* Kopf mit Datum */
.daybar { display: flex; align-items: center; gap: 4px; margin-bottom: 4px; }
.daybar .title { flex: 1; }
.daybar .sub { color: var(--muted); font-size: 14px; }

/* Zeitplan */
.timeline { position: relative; }
.slot { display: flex; gap: 12px; padding: 10px 12px; border-radius: 12px; background: var(--card); border: 1px solid var(--line); align-items: flex-start; }
.slot + .slot { margin-top: 6px; }
.slot .time { width: 92px; flex-shrink: 0; font-variant-numeric: tabular-nums; font-size: 14px; color: var(--muted); padding-top: 2px; }
.slot .body { flex: 1; min-width: 0; border-left: 3px solid var(--k-sonstiges); padding-left: 10px; }
.slot .t { font-weight: 600; overflow-wrap: anywhere; }
.slot.done .t { text-decoration: line-through; color: var(--muted); }
.slot.past:not(.done) { opacity: .7; }
.slot.fixed { background: transparent; }
.badge { display: inline-block; font-size: 11px; font-weight: 600; padding: 1px 7px; border-radius: 99px; background: var(--accent-soft); color: var(--accent); margin-top: 4px; }
.k-aufgabe { border-color: var(--k-aufgabe) !important; } .k-lernen { border-color: var(--k-lernen) !important; }
.k-termin { border-color: var(--k-termin) !important; } .k-pause { border-color: var(--k-pause) !important; }
.k-sport { border-color: var(--k-sport) !important; } .k-essen { border-color: var(--k-essen) !important; }
.k-sonstiges { border-color: var(--k-sonstiges) !important; } .k-kalender { border-color: var(--k-kalender) !important; }
.k-sr { border-color: var(--k-sr) !important; }
.nowline { display: flex; align-items: center; gap: 8px; color: var(--danger); font-size: 12px; font-weight: 600; margin: 6px 0; }
.nowline::after { content: ""; flex: 1; height: 2px; background: var(--danger); border-radius: 2px; }
.check { width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--line); background: transparent; cursor: pointer; flex-shrink: 0; margin-top: 1px; display: grid; place-items: center; color: #fff; font-size: 13px; padding: 0; }
.check.on { background: var(--accent); border-color: var(--accent); }
@media (prefers-color-scheme: dark) { .check.on { color: #10221c; } }

.allday { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
.chip { font-size: 13px; padding: 4px 10px; border-radius: 99px; background: var(--card); border: 1px solid var(--line); }

.summary { background: var(--accent-soft); border: 0; }
.summary p { margin: 0; }

/* Aufgaben */
.item { display: flex; gap: 10px; align-items: flex-start; padding: 10px 0; border-top: 1px solid var(--line); }
.item:first-child { border-top: 0; padding-top: 2px; }
.item .t { font-weight: 500; overflow-wrap: anywhere; }
.item.done .t { text-decoration: line-through; color: var(--muted); }
.prio { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; vertical-align: 1px; }
.p1 { background: var(--danger); } .p2 { background: var(--warn); } .p3 { background: var(--muted); }

/* Vorschau (KI) */
.preview { border: 2px dashed var(--accent); }
.preview .pv { display: flex; gap: 10px; align-items: flex-start; padding: 6px 0; }
.preview .pv input[type=checkbox] { margin-top: 4px; width: 18px; height: 18px; accent-color: var(--accent); }

/* Formularzeilen */
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
@media (max-width: 380px) { .grid3 { grid-template-columns: 1fr 1fr; } }
.switch { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.switch input { width: 20px; height: 20px; accent-color: var(--accent); }

/* Navigation unten */
nav.tabs { position: fixed; left: 0; right: 0; bottom: 0; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-top: 1px solid var(--line); padding: 6px 8px calc(6px + env(safe-area-inset-bottom)); }
nav.tabs .in { max-width: 640px; margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); }
nav.tabs button { border: 0; background: transparent; padding: 6px 0; color: var(--muted); cursor: pointer; font-size: 12px; display: flex; flex-direction: column; align-items: center; gap: 2px; }
nav.tabs button .ico { font-size: 20px; line-height: 1; }
nav.tabs button.on { color: var(--accent); font-weight: 600; }

/* Login */
.login { max-width: 380px; margin: 12vh auto 0; }
.logo { width: 52px; height: 52px; border-radius: 14px; background: var(--accent); display: grid; place-items: center; color: #fff; font-size: 26px; margin-bottom: 14px; }

#toast { position: fixed; left: 50%; bottom: calc(84px + env(safe-area-inset-bottom)); transform: translateX(-50%) translateY(20px); background: var(--text); color: var(--bg); padding: 10px 14px; border-radius: 10px; font-size: 14px; max-width: calc(100% - 32px); opacity: 0; pointer-events: none; transition: .2s; z-index: 10; }
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
#toast.err { background: var(--danger); color: #fff; }

.spin { display: inline-block; width: 14px; height: 14px; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: s .7s linear infinite; vertical-align: -2px; margin-right: 6px; }
@keyframes s { to { transform: rotate(360deg); } }
.empty { text-align: center; color: var(--muted); padding: 18px 8px; font-size: 14px; }
details summary { cursor: pointer; color: var(--muted); font-size: 14px; }