/* Layout: frosted glass panels floating over a desert dusk, stacked like the reference (nav pill → hero → content → bottom bar) */
:root {
  --sky-top: #59616f;
  --sky-mid: #9a9aa3;
  --horizon: #d6bba8;
  --sand: #b4846b;
  --sand-deep: #7b4f3e;

  --glass: rgba(238, 233, 229, 0.38);
  --glass-strong: rgba(246, 243, 240, 0.70);
  --glass-line: rgba(255, 255, 255, 0.55);
  --ink: #1c1b1f;
  --ink-soft: #4b4750;
  --ink-mute: #7a7480;
  --paper: #fbf9f7;
  --pill-dark: #1f1e22;
  --danger: #9b3424;
  --ok: #3f6b4e;

  --f-display: "Big Shoulders Display", "Oswald", "Arial Narrow", sans-serif;
  --f-body: "Archivo", "Helvetica Neue", Arial, sans-serif;

  --r-xl: 34px;
  --r-lg: 24px;
  --r-md: 16px;
  color-scheme: light;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--f-body);
  font-size: 14px;
  line-height: 1.45;
  color: var(--ink);
  background: var(--sky-top);
  padding-inline: 16px;
  padding-block: 20px 40px;
  -webkit-font-smoothing: antialiased;
}
[hidden] { display: none !important; }

/* ---------- scene ---------- */
.scene {
  position: fixed; inset: 0; z-index: -1; overflow: hidden;
  background:
    linear-gradient(180deg, var(--sky-top) 0%, var(--sky-mid) 32%, var(--horizon) 52%, var(--sand) 60%, var(--sand-deep) 100%);
}
.sun {
  position: absolute; left: 72%; top: 44%; width: 60vmax; height: 30vmax;
  transform: translate(-50%, -50%);
  background: radial-gradient(closest-side, rgba(255, 220, 190, 0.85), rgba(255, 200, 170, 0) 70%);
}
.dune { position: absolute; border-radius: 50%; filter: blur(2px); }
.dune-1 { left: -20%; top: 58%; width: 80%; height: 30%; background: radial-gradient(closest-side, #a8735a, rgba(168,115,90,0)); }
.dune-2 { right: -25%; top: 62%; width: 90%; height: 34%; background: radial-gradient(closest-side, #8e5c47, rgba(142,92,71,0)); }
.dune-3 { left: 10%; bottom: -18%; width: 110%; height: 45%; background: radial-gradient(closest-side, #c69a7f, rgba(198,154,127,0)); }
.bubble {
  position: absolute; border-radius: 50%;
  background: radial-gradient(circle at 32% 28%, rgba(255,255,255,0.9) 0 6%, rgba(255,255,255,0.18) 18%, rgba(255,255,255,0.05) 55%, rgba(255,255,255,0.35) 100%);
  box-shadow: inset 0 0 18px rgba(255,255,255,0.35);
}
.b1 { width: 120px; height: 120px; left: 6%; top: 14%; }
.b2 { width: 64px; height: 64px; right: 9%; top: 9%; }
.b3 { width: 180px; height: 180px; right: 4%; bottom: 8%; opacity: 0.7; }
@media (prefers-reduced-motion: no-preference) {
  .bubble { animation: float 14s ease-in-out infinite; }
  .b2 { animation-duration: 11s; animation-delay: -3s; }
  .b3 { animation-duration: 18s; animation-delay: -6s; }
  @keyframes float { 50% { transform: translateY(-14px); } }
}

/* ---------- glass ---------- */
.glass {
  background: var(--glass);
  border: 1px solid var(--glass-line);
  border-radius: var(--r-xl);
  -webkit-backdrop-filter: blur(22px) saturate(120%);
  backdrop-filter: blur(22px) saturate(120%);
  box-shadow: 0 20px 60px -30px rgba(40, 25, 20, 0.45);
}

/* ---------- type ---------- */
.brand { font-family: var(--f-display); font-weight: 800; font-size: 26px; letter-spacing: 0.02em; line-height: 1; color: var(--paper); }
.brand sup { font-size: 0.45em; vertical-align: super; }
.micro { font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.09em; font-weight: 600; color: var(--ink-soft); }
.micro.strong, .strong { color: var(--ink); font-weight: 700; }
.right { text-align: right; }
.stack { display: flex; flex-direction: column; gap: 2px; }
.numeral { font-family: var(--f-display); font-weight: 800; line-height: 0.82; letter-spacing: -0.01em; color: var(--ink); font-variant-numeric: tabular-nums; }
.lead { font-size: 15px; max-width: 48ch; }
.panel-title { display: block; font-family: var(--f-display); font-weight: 800; font-size: 28px; line-height: 1; text-transform: uppercase; color: var(--ink); text-wrap: balance; }
.panel-title.big { font-size: clamp(24px, 3.4vw, 40px); color: var(--paper); text-shadow: 0 1px 12px rgba(60,40,30,0.25); }

/* ---------- buttons ---------- */
button { font: inherit; cursor: pointer; }
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, a:focus-visible {
  outline: 2px solid var(--ink); outline-offset: 2px;
}
.pill {
  display: inline-flex; align-items: center; gap: 10px;
  border: 0; border-radius: 999px; padding: 6px 6px 6px 18px;
  font-weight: 600; font-size: 13px; white-space: nowrap;
  transition: transform .15s ease, background .15s ease;
}
.pill:not(:has(.dot-btn)) { padding: 10px 18px; }
.pill:hover { transform: translateY(-1px); }
.pill:disabled { opacity: .55; cursor: wait; transform: none; }
.pill-light { background: var(--paper); color: var(--ink); }
.pill-dark { background: var(--pill-dark); color: var(--paper); }
.pill.small { padding: 8px 14px; font-size: 12px; }
.dot-btn {
  display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 50%;
  background: var(--pill-dark); color: var(--paper); font-size: 15px; line-height: 1;
}
.dot-btn.light { background: rgba(255,255,255,0.14); border: 1px solid rgba(255,255,255,0.35); }
.round {
  width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--glass-line);
  background: rgba(255,255,255,0.35); color: var(--ink); font-size: 20px; line-height: 1;
  display: inline-grid; place-items: center;
}
.round:hover { background: rgba(255,255,255,0.6); }
.link-btn { background: none; border: 0; padding: 4px 0; color: var(--ink-soft); text-decoration: underline; text-underline-offset: 3px; font-size: 13px; }
.chip-dark { background: var(--pill-dark); color: var(--paper); border-radius: 999px; padding: 6px 12px; font-size: 12px; font-weight: 600; font-variant-numeric: tabular-nums; white-space: nowrap; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* ---------- forms ---------- */
.form { display: flex; flex-direction: column; gap: 12px; }
.field { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
input, select, textarea {
  font: inherit; font-size: 14px; color: var(--ink);
  background: var(--glass-strong); border: 1px solid rgba(255,255,255,0.7);
  border-radius: 12px; padding: 10px 12px; width: 100%; min-width: 0;
}
textarea { resize: vertical; min-height: 44px; }
.form-row.four { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 10px; }
.msg { margin: 0; min-height: 1.2em; font-size: 13px; color: var(--danger); }
.msg.ok { color: var(--ok); }
.warn { background: rgba(155, 52, 36, 0.12); border: 1px solid rgba(155,52,36,0.35); color: var(--danger); border-radius: 12px; padding: 8px 12px; font-size: 13px; }

/* ---------- login ---------- */
.center-view { min-height: calc(100vh - 60px); display: grid; place-items: center; }
.login-card { width: min(460px, 100%); padding: 28px; display: flex; flex-direction: column; gap: 22px; }
.login-top { display: flex; justify-content: space-between; align-items: flex-start; }
.login-hero { display: flex; align-items: flex-end; gap: 18px; }
.login-hero .numeral { font-size: 110px; }

/* ---------- app ---------- */
.app { max-width: 1180px; margin: 0 auto; display: flex; flex-direction: column; gap: 18px; }
.navbar {
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  padding: 12px 14px 12px 24px; border-radius: 999px;
  position: sticky; top: calc(10px + env(safe-area-inset-top, 0px)); z-index: 10;
}
.nav-links { display: flex; gap: 26px; flex: 1; }
.nav-links a { color: var(--paper); text-decoration: none; }
.nav-links a:hover { text-decoration: underline; text-underline-offset: 3px; }
.nav-right { display: flex; align-items: center; gap: 14px; }
#nav-user { color: var(--paper); }
.viewer-select { display: flex; align-items: center; gap: 8px; }
.viewer-select .micro { color: var(--paper); }
.viewer-select select { padding: 6px 10px; border-radius: 999px; font-size: 13px; }

.hero {
  display: grid; grid-template-columns: auto 1fr auto; gap: 28px; align-items: start;
  padding: 24px 24px 24px 28px;
  background: linear-gradient(120deg, rgba(240,236,233,0.55), rgba(222,214,208,0.35));
}
.small-brand { font-size: 22px; }
.hero-num .numeral { font-size: clamp(84px, 11vw, 132px); }
.hero-meta { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; padding-top: 6px; }
.hero-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }

.main-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: 18px; align-items: start; }
.panel { padding: 20px; min-width: 0; }
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.cal-nav { display: flex; gap: 8px; }

/* calendar */
.cal-grid { display: grid; grid-template-columns: 34px repeat(7, minmax(0, 1fr)); gap: 6px; }
.cal-dow { text-align: center; padding-bottom: 4px; }
.cal-kw {
  display: grid; place-items: center; border: 0; background: none;
  font-size: 10px; font-weight: 700; letter-spacing: .06em; color: var(--ink-mute);
  border-radius: 10px;
}
.cal-kw:hover, .cal-kw.active { background: rgba(255,255,255,0.4); color: var(--ink); }
.cal-day {
  position: relative; aspect-ratio: 1 / 0.92; min-height: 54px;
  border: 1px solid transparent; border-radius: var(--r-md);
  background: rgba(255,255,255,0.22); color: var(--ink);
  display: flex; flex-direction: column; justify-content: space-between; align-items: flex-start;
  padding: 7px 8px; text-align: left; transition: background .12s ease;
}
.cal-day:hover { background: rgba(255,255,255,0.5); }
.cal-day.out { opacity: .42; }
.cal-day.weekend { background: rgba(255,255,255,0.1); }
.cal-day.in-praktikum::after {
  content: ""; position: absolute; left: 8px; right: 8px; bottom: 4px; height: 2px; border-radius: 2px;
  background: rgba(255,255,255,0.6);
}
.cal-day.in-week { background: rgba(255,255,255,0.36); }
.cal-day.selected { border-color: var(--ink); background: rgba(255,255,255,0.62); }
.cal-num { font-weight: 700; font-size: 14px; font-variant-numeric: tabular-nums; display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; margin: -3px 0 0 -4px; }
.cal-day.today .cal-num { background: var(--pill-dark); color: var(--paper); }
.cal-day.today::before {
  content: "Heute"; position: absolute; top: 8px; right: 8px;
  font-size: 9px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--ink);
}
.cal-meta { display: flex; align-items: center; gap: 4px; width: 100%; }
.cal-hours { font-size: 11px; font-weight: 600; font-variant-numeric: tabular-nums; margin-right: auto; }
.cal-dot { width: 7px; height: 7px; border-radius: 50%; flex: none; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 14px; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }

/* day panel */
.entries { list-style: none; margin: 0 0 16px; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.entry {
  background: rgba(255,255,255,0.5); border-radius: var(--r-md); padding: 12px 14px;
  display: flex; flex-direction: column; gap: 6px; border-left: 4px solid var(--c, var(--ink));
}
.entry-top { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
.entry-time { font-weight: 700; font-variant-numeric: tabular-nums; }
.entry-area { font-size: 10.5px; text-transform: uppercase; letter-spacing: .08em; font-weight: 700; color: var(--ink-soft); }
.entry p { margin: 0; overflow-wrap: anywhere; white-space: pre-wrap; }
.entry .learned { color: var(--ink-soft); }
.entry .learned::before { content: "Gelernt: "; font-weight: 700; color: var(--ink); }
.entry-actions { display: flex; gap: 14px; }
.empty { color: var(--ink-soft); font-size: 13px; padding: 10px 2px; }
.entry-form { border-top: 1px solid var(--glass-line); padding-top: 16px; }
.form-head { display: flex; justify-content: space-between; align-items: center; }
.readonly-note { margin: 0; }

/* week panel */
.week-panel { background: linear-gradient(110deg, rgba(110,98,96,0.35), rgba(220,205,196,0.30)); }
.week-head-left { display: flex; align-items: center; gap: 16px; min-width: 0; }
.week-head-left .micro { color: var(--paper); }
.week-thumb {
  width: 64px; height: 64px; border-radius: 50%; flex: none; display: grid; place-items: center;
  background: radial-gradient(circle at 30% 28%, rgba(255,255,255,0.85) 0 7%, rgba(255,255,255,0.25) 22%, rgba(180,132,107,0.5) 70%);
  border: 1px solid var(--glass-line);
  font-family: var(--f-display); font-weight: 800; font-size: 26px; color: var(--ink);
}
.week-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.status-pill { border-radius: 999px; padding: 6px 12px; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; background: rgba(255,255,255,0.7); color: var(--ink); }
.status-pill.done { background: var(--pill-dark); color: var(--paper); }

.week-body { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.3fr) minmax(0, 1fr); gap: 16px; }
.week-card { background: var(--glass-strong); border-radius: var(--r-lg); padding: 16px 18px; min-width: 0; display: flex; flex-direction: column; gap: 12px; }
.week-card h3 { margin: 0; font-size: 10.5px; text-transform: uppercase; letter-spacing: .09em; color: var(--ink-soft); }
.kpis { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.kpi .numeral { font-size: 46px; display: block; }
.kpi .micro { display: block; margin-top: 4px; }
.bars { display: flex; flex-direction: column; gap: 9px; }
.bar-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 4px 10px; font-size: 12.5px; }
.bar-track { grid-column: 1 / -1; height: 7px; border-radius: 6px; background: rgba(28,27,31,0.08); overflow: hidden; }
.bar-fill { height: 100%; border-radius: 6px; }
.bar-val { font-variant-numeric: tabular-nums; font-weight: 600; }
.group { display: flex; flex-direction: column; gap: 6px; }
.group-title { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 13px; }
.group ul, .learned-list { margin: 0; padding-left: 18px; display: flex; flex-direction: column; gap: 4px; }
.group li, .learned-list li { overflow-wrap: anywhere; }
.d { color: var(--ink-mute); font-variant-numeric: tabular-nums; font-size: 12px; margin-right: 4px; }
.copy-fallback { width: 100%; min-height: 160px; margin-top: 12px; }

.foot { text-align: center; color: var(--paper); opacity: .8; }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .hero { grid-template-columns: auto 1fr; }
  .small-brand { display: none; }
  .hero-meta { grid-column: 1 / -1; grid-row: 2; }
  .hero-actions { grid-column: 2; grid-row: 1; align-self: end; }
  .main-grid { grid-template-columns: minmax(0, 1fr); }
  .week-body { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 620px) {
  body { padding-block: 12px 28px; }
  .navbar { border-radius: var(--r-lg); padding: 12px 16px; }
  .nav-links { display: none; }
  .nav-right { flex-wrap: wrap; justify-content: flex-end; flex: 1; }
  .hero { padding: 18px; gap: 16px; }
  .hero-meta { grid-template-columns: 1fr 1fr; }
  .hero-meta > :last-child { display: none; }
  .cal-grid { grid-template-columns: 22px repeat(7, minmax(0, 1fr)); gap: 3px; }
  .cal-day { min-height: 44px; padding: 4px; border-radius: 10px; aspect-ratio: auto; }
  .cal-day.today::before { display: none; }
  .cal-num { font-size: 12px; width: 22px; height: 22px; margin: 0; }
  .cal-hours { font-size: 9.5px; }
  .cal-dot { width: 5px; height: 5px; }
  .form-row.four { grid-template-columns: 1fr 1fr; }
  .panel { padding: 16px; border-radius: var(--r-lg); }
}