/* Zisterne – Dashboard nach dem Claude-Design „Zisternenwasser-Überwachungs-App"
   (design_handoff_webapp/Zisterne.dc.html). Tokens, Maße und Texte stammen aus
   der Design-Referenz; dunkel ist der Standard, hell folgt der Systemeinstellung. */

:root {
  color-scheme: dark;
  --bg: #0d141a;
  --bg-2: #080c10;
  --text: #eaf2f8;
  --dim: #7e93a3;
  --panel: rgba(255, 255, 255, 0.045);
  --panel-b: rgba(255, 255, 255, 0.09);
  --accent: #39b6e8;
  --water: #54c4f0;
  --ok: #46d39a;
  --warn: #f0b24a;
  --bad: #f0706f;
  --stage: radial-gradient(130% 90% at 50% 8%, rgba(57, 182, 232, 0.16), transparent 62%);
  --font: "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --bg: #eef3f6;
    --bg-2: #e6edf1;
    --text: #15242e;
    --dim: #5d7180;
    --panel: #ffffff;
    --panel-b: rgba(20, 44, 60, 0.1);
    --accent: #2f8fd6;
    --water: #2f8fd6;
    --ok: #1ea97c;
    --warn: #cf8a1f;
    --bad: #d65555;
    --stage: radial-gradient(130% 90% at 50% 8%, rgba(47, 143, 214, 0.18), transparent 62%);
  }
}

@keyframes zpulse {
  0%, 100% { opacity: 0.55; }
  50% { opacity: 1; }
}

* { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

html { background: var(--bg-2); }

body {
  min-height: 100vh;
  min-height: 100dvh;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%) no-repeat;
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
  display: flex;
  justify-content: center;
}

button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
a { color: inherit; text-decoration: none; }
.mono { font-family: var(--mono); }

.app {
  width: 100%;
  max-width: 460px;
  padding: 20px 18px 34px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ---------- Kopf ---------- */

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

.kopf-titel { display: flex; flex-direction: column; gap: 3px; min-width: 0; }

.overline {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--dim);
  text-transform: uppercase;
}

.titel {
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pille {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--panel);
  border: 1px solid var(--panel-b);
  flex: none;
}

.pille-punkt {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--dim);
  animation: zpulse 1.8s ease-in-out infinite;
}

.pille[data-status="online"] .pille-punkt { background: var(--ok); }
.pille[data-status="sensorfehler"] .pille-punkt { background: var(--warn); }
.pille[data-status="offline"] .pille-punkt,
.pille[data-status="server"] .pille-punkt { background: var(--bad); }

.pille-text { font-size: 12.5px; font-weight: 600; color: var(--text); white-space: nowrap; }

/* ---------- Banner ---------- */

.banner {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding: 13px 15px;
  border-radius: 14px;
  --ton: var(--warn);
  background: color-mix(in srgb, var(--ton) 13%, transparent);
  border: 1px solid color-mix(in srgb, var(--ton) 38%, transparent);
}

.banner[data-ton="bad"] { --ton: var(--bad); }
.banner[data-ton="accent"] { --ton: var(--accent); }

.banner-punkt { width: 9px; height: 9px; border-radius: 999px; margin-top: 5px; flex: none; background: var(--ton); }
.banner-text { display: flex; flex-direction: column; gap: 2px; }
.banner-titel { font-size: 14px; font-weight: 700; color: var(--text); }
.banner-sub { font-size: 12.5px; color: var(--dim); line-height: 1.45; }

/* ---------- Bühne (3D-Tank) ---------- */

.buehne {
  position: relative;
  height: 336px;
  border-radius: 22px;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--panel-b);
}

.buehne-glow { position: absolute; inset: 0; background: var(--stage); }

#tank3d {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none;
}

.tank2d {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.tank2d-glas { fill: color-mix(in srgb, var(--water) 8%, transparent); stroke: color-mix(in srgb, var(--water) 35%, transparent); stroke-width: 1.5; }
.tank2d-wasser { fill: var(--water); opacity: 0.92; transition: y 900ms cubic-bezier(0.2, 0.7, 0.2, 1), height 900ms cubic-bezier(0.2, 0.7, 0.2, 1); }
.tank2d-flaeche { fill: color-mix(in srgb, var(--water) 55%, white); opacity: 0.9; transition: cy 900ms cubic-bezier(0.2, 0.7, 0.2, 1); }
.tank2d-ring { fill: none; stroke: var(--accent); stroke-width: 2; opacity: 0.8; }

.readout {
  position: absolute;
  left: 18px;
  bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 14px 10px 0;
  background: linear-gradient(90deg, color-mix(in srgb, var(--bg) 78%, transparent) 70%, transparent);
  border-radius: 12px;
}

.readout-zahl {
  display: flex;
  align-items: baseline;
  gap: 4px;
  line-height: 1;
  font-family: var(--mono);
  font-size: 60px;
  font-weight: 700;
  color: var(--water);
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}

.readout-einheit { font-size: 24px; font-weight: 500; letter-spacing: 0; }

.readout-sub { font-size: 13px; color: var(--dim); font-weight: 500; font-variant-numeric: tabular-nums; }

.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 7px;
  background: color-mix(in srgb, var(--bg) 74%, transparent);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
}

.overlay-titel {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bad);
}

.overlay[data-ton="warn"] .overlay-titel { color: var(--warn); }
.overlay[data-ton="dim"] .overlay-titel { color: var(--dim); }
.overlay-sub { font-size: 13px; color: var(--dim); }

/* ---------- Kennzahlen ---------- */

.karten {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 11px;
}

.karte {
  padding: 14px 13px;
  border-radius: 16px;
  background: var(--panel);
  border: 1px solid var(--panel-b);
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-width: 0;
}

.karte-label { font-size: 11px; color: var(--dim); font-weight: 600; letter-spacing: 0.02em; }
.karte-wert { font-size: 20px; font-weight: 700; color: var(--text); font-variant-numeric: tabular-nums; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.karte-sub { font-size: 11px; color: var(--dim); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.karte-trend { font-family: var(--font); }
.karte-trend[data-trend="steigt"] { color: var(--ok); }
.karte-trend[data-trend="faellt"] { color: var(--dim); }
.karte-trend[data-trend="stabil"] { color: var(--accent); }

/* ---------- Verlauf ---------- */

.verlauf {
  padding: 16px 16px 12px;
  border-radius: 18px;
  background: var(--panel);
  border: 1px solid var(--panel-b);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.verlauf-kopf { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.verlauf-titel { font-size: 13px; font-weight: 700; color: var(--text); }

.bereiche { display: flex; gap: 2px; }

.bereiche button {
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--dim);
  padding: 4px 7px;
  border-radius: 8px;
  transition: color 160ms ease, background 160ms ease;
}

.bereiche button:hover { color: var(--text); }
.bereiche button.selected { color: var(--text); background: var(--panel-b); }

.chart-wrap { position: relative; width: 100%; height: 92px; }

#chart { width: 100%; height: 100%; display: block; overflow: visible; }

.chart-schwelle { stroke: var(--warn); stroke-width: 1; stroke-dasharray: 3 4; opacity: 0.5; }
.chart-flaeche { fill: url(#zfill); }
.chart-linie { fill: none; stroke: var(--water); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart-ende { fill: var(--water); }
.chart-ende-glow { fill: var(--water); opacity: 0.25; }
.chart-fehler rect { fill: var(--warn); opacity: 0.6; }
.chart-cursor line { stroke: var(--dim); stroke-width: 1; stroke-dasharray: 2 3; }
.chart-cursor circle { fill: var(--water); stroke: var(--bg); stroke-width: 2; }
.chart-hit { fill: transparent; cursor: crosshair; }

.tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--text);
  color: var(--bg);
  font-size: 11px;
  line-height: 1.4;
  padding: 6px 9px;
  border-radius: 8px;
  white-space: nowrap;
  transform: translate(-50%, calc(-100% - 10px));
  z-index: 5;
}

.tooltip strong { font-weight: 700; }
.tooltip .tt-zeit { display: block; opacity: 0.7; font-size: 10px; letter-spacing: 0.04em; }

.chart-leer {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dim);
  font-size: 12px;
  text-align: center;
}

.verlauf-achse {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  color: var(--dim);
  letter-spacing: 0.04em;
}

.verlauf-schwelle { color: var(--warn); opacity: 0.8; }

/* ---------- Fuß ---------- */

.fuss {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 0 4px;
  font-size: 12px;
  color: var(--dim);
}

.fuss .mono { font-size: 10.5px; letter-spacing: 0.05em; }
.fuss-link { padding: 4px 8px; border-radius: 8px; border: 1px solid var(--panel-b); transition: color 160ms ease, border-color 160ms ease; }
.fuss-link:hover { color: var(--text); border-color: var(--dim); }

/* ---------- Diagnose ---------- */

.diagnose {
  padding: 12px 16px;
  border-radius: 14px;
  background: var(--panel);
  border: 1px solid var(--panel-b);
}

.diagnose summary {
  cursor: pointer;
  list-style: none;
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dim);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.diagnose summary::-webkit-details-marker { display: none; }
.diagnose summary::after { content: "+"; font-size: 14px; }
.diagnose[open] summary::after { content: "–"; }

.diagnose-liste { margin-top: 12px; display: flex; flex-direction: column; }
.diagnose-liste div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 0;
  border-top: 1px solid var(--panel-b);
  font-size: 12px;
}
.diagnose-liste dt { color: var(--dim); }
.diagnose-liste dd { font-family: var(--mono); font-size: 11.5px; color: var(--text); text-align: right; }

.diagnose-hinweis { margin-top: 10px; font-size: 11px; color: var(--dim); line-height: 1.45; }

/* ---------- Kleine Bildschirme ---------- */

@media (max-width: 380px) {
  .app { padding: 16px 12px 28px; }
  .readout-zahl { font-size: 52px; }
  .karte-wert { font-size: 17px; }
}

@media (prefers-reduced-motion: reduce) {
  .pille-punkt { animation: none; }
  * { transition-duration: 0.01ms !important; }
}