:root {
  --bg: #0a0d13;
  --bg-soft: #0f131b;
  --panel: #141924;
  --panel-border: #242c3c;
  --card: #12161f;
  --ink: #e6ecf5;
  --ink-soft: #7c8aa0;
  --cyan: #22d3ee;
  --cyan-soft: #67e8f9;
  --magenta: #e879f9;
  --green: #4ade80;
  --amber: #d9a441;
  --danger: #f0576b;
  --text: #e6ecf5;
  --text-dim: #7c8aa0;
  --radius: 10px;
  --shadow: 0 4px 16px rgba(0,0,0,0.5);
  --font-display: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-body: -apple-system, "Inter", "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Consolas, monospace;

  --c-cyan: #22d3ee; --c-magenta: #e879f9; --c-green: #4ade80;
  --c-amber: #d9a441; --c-violet: #a78bfa; --c-slate: #64748b;
}

[data-theme="light"] {
  --bg: #eef1f6;
  --bg-soft: #e4e9f1;
  --panel: #f6f8fb;
  --panel-border: #d7dce6;
  --card: #ffffff;
  --ink: #131722;
  --ink-soft: #5b6472;
  --text: #131722;
  --text-dim: #5b6472;
  --shadow: 0 4px 14px rgba(20,30,50,0.1);
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0; height: 100%; background: var(--bg);
  background-image:
    radial-gradient(circle at 15% 10%, rgba(34,211,238,0.06), transparent 40%),
    radial-gradient(circle at 85% 90%, rgba(232,121,249,0.05), transparent 40%);
  color: var(--text); font-family: var(--font-body); -webkit-font-smoothing: antialiased;
}
button, input, textarea, select { font-family: inherit; }

/* ---------- Login ---------- */
#login-screen {
  position: fixed; inset: 0; display: flex; align-items: center; justify-content: center;
  background: var(--bg); z-index: 100;
}
.login-card {
  background: var(--panel); border: 1px solid var(--panel-border); border-radius: var(--radius);
  padding: 40px 36px; width: min(360px, 90vw); box-shadow: var(--shadow); text-align: center;
}
.login-card .pin-icon { width: 36px; height: 36px; margin: 0 auto 14px; color: var(--cyan-soft); }
.login-card h1 { font-family: var(--font-display); font-size: 1.6rem; margin: 0 0 4px; }
.login-card p { color: var(--text-dim); font-size: 0.9rem; margin: 0 0 22px; }
.login-card input {
  width: 100%; padding: 12px 14px; border-radius: 7px; border: 1px solid var(--panel-border);
  background: var(--bg-soft); color: var(--text); font-size: 1rem; margin-bottom: 12px;
}
.login-card button {
  width: 100%; padding: 12px; border-radius: 7px; border: none; background: var(--cyan);
  color: #0a0d13; font-weight: 600; font-size: 0.95rem; cursor: pointer; transition: background 0.15s;
}
.login-card button:hover { background: var(--cyan-soft); }
.login-error { color: var(--danger); font-size: 0.85rem; min-height: 1.2em; margin-top: 4px; }

/* ---------- App shell ---------- */
#app { display: none; height: 100vh; flex-direction: column; }
#app.visible { display: flex; }

header.topbar {
  display: flex; align-items: center; gap: 14px; padding: 12px 20px;
  background: var(--panel); border-bottom: 1px solid var(--panel-border); flex-shrink: 0;
}
.brand { display: flex; align-items: center; gap: 9px; white-space: nowrap; }
.brand svg { width: 20px; height: 20px; color: var(--cyan-soft); flex-shrink: 0; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
#brand-title { font-family: var(--font-display); font-size: 1.15rem; color: var(--cyan-soft); }
.brand-tag { font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.06em; color: var(--text-dim); }
.brand-tag .grad {
  background: linear-gradient(90deg, var(--cyan-soft), var(--magenta));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.topbar-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; }

.icon-btn {
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  border-radius: 7px; border: 1px solid var(--panel-border); background: var(--bg-soft);
  color: var(--text); cursor: pointer; transition: background 0.15s, transform 0.1s; flex-shrink: 0;
}
.icon-btn:hover { background: var(--panel-border); }
.icon-btn:active { transform: scale(0.94); }
.icon-btn svg { width: 17px; height: 17px; }

.btn-primary {
  display: flex; align-items: center; gap: 6px; padding: 9px 16px; border-radius: 8px; border: none;
  background: var(--cyan); color: #0a0d13; font-weight: 600; font-size: 0.86rem; cursor: pointer; white-space: nowrap;
}
.btn-primary:hover { background: var(--cyan-soft); }
.btn-primary svg { width: 16px; height: 16px; }

.small-btn {
  padding: 7px 13px; border-radius: 6px; border: 1px solid var(--panel-border);
  background: var(--bg-soft); color: var(--text); font-size: 0.8rem; cursor: pointer;
}
.small-btn:hover { background: var(--panel-border); }

main.content { flex: 1; overflow-y: auto; padding: 24px; }
.view { max-width: 1100px; margin: 0 auto; }

.empty-state {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
  color: var(--text-dim); text-align: center; padding: 60px 20px;
}
.empty-state svg { width: 40px; height: 40px; opacity: 0.5; color: var(--cyan-soft); }
.empty-state .sub { font-size: 0.85rem; }

/* ---------- Fahrzeug-Karten ---------- */
.vehicle-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(380px, 1fr)); gap: 18px;
}
.vehicle-card {
  background: var(--card); border: 1px solid var(--panel-border); border-top: 4px solid var(--vc, var(--cyan));
  border-radius: 10px; padding: 24px 26px; cursor: pointer; box-shadow: var(--shadow); position: relative;
  transition: transform 0.12s; min-width: 0;
}
.vehicle-card:hover { transform: translateY(-2px); }
.vehicle-card .vh-name {
  font-family: var(--font-display); font-size: 1.4rem; margin-bottom: 5px; padding-right: 28px;
  overflow-wrap: break-word; word-break: break-word; line-height: 1.25;
}
.vehicle-card .vh-plate {
  font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-dim); margin-bottom: 18px;
  overflow-wrap: break-word; word-break: break-word;
}
.vehicle-card .vh-stats { display: flex; gap: 22px; font-size: 0.8rem; color: var(--text-dim); flex-wrap: wrap; row-gap: 12px; }
.vehicle-card .vh-stats > div { min-width: 70px; }
.vehicle-card .vh-stats b { color: var(--text); font-weight: 600; display: block; font-size: 1.1rem; overflow-wrap: break-word; }
.vehicle-card .edit-dot {
  position: absolute; top: 14px; right: 14px; width: 28px; height: 28px; border-radius: 6px;
  display: flex; align-items: center; justify-content: center; opacity: 0; color: var(--text-dim);
}
.vehicle-card:hover .edit-dot { opacity: 1; }
.vehicle-card .edit-dot:hover { background: var(--panel-border); color: var(--text); }
.vehicle-card .edit-dot svg { width: 15px; height: 15px; }

/* ---------- Stats-Leiste ---------- */
.stats-row {
  display: flex; gap: 14px; margin-bottom: 20px; flex-wrap: wrap;
}
.stat-box {
  background: var(--card); border: 1px solid var(--panel-border); border-radius: 9px;
  padding: 12px 18px; min-width: 130px;
}
.stat-box .label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-dim); }
.stat-box .value { font-family: var(--font-mono); font-size: 1.15rem; margin-top: 3px; color: var(--cyan-soft); }

/* ---------- Tabelle ---------- */
.table-wrap {
  background: var(--card); border: 1px solid var(--panel-border); border-radius: 10px;
  overflow-x: auto; box-shadow: var(--shadow);
}
.fuel-table { width: 100%; border-collapse: collapse; font-size: 0.86rem; min-width: 760px; }
.fuel-table th {
  text-align: left; padding: 11px 14px; background: var(--bg-soft); color: var(--text-dim);
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.04em; font-weight: 600;
  border-bottom: 1px solid var(--panel-border); white-space: nowrap;
}
.fuel-table .th-sub { text-transform: none; font-size: 0.65rem; opacity: 0.7; letter-spacing: 0; }
.fuel-table td {
  padding: 10px 14px; border-bottom: 1px solid var(--panel-border); white-space: nowrap;
}
.fuel-table tbody tr:hover { background: var(--bg-soft); }
.fuel-table tbody tr:last-child td { border-bottom: none; }
.fuel-table .nr-cell { color: var(--text-dim); font-family: var(--font-mono); }
.fuel-table .num-cell { font-family: var(--font-mono); }
.fuel-table .verbrauch-cell { color: var(--green); font-family: var(--font-mono); }
.fuel-table .price-cell { color: var(--cyan-soft); font-family: var(--font-mono); }
.fuel-table .row-actions { display: flex; gap: 4px; }
.row-btn {
  width: 26px; height: 26px; display: flex; align-items: center; justify-content: center;
  border-radius: 6px; border: none; background: transparent; color: var(--text-dim); cursor: pointer;
}
.row-btn:hover { background: var(--panel-border); color: var(--text); }
.row-btn svg { width: 14px; height: 14px; }
.row-btn.danger:hover { background: var(--danger); color: #fff; }

/* ---------- Dialoge ---------- */
.dialog-overlay {
  position: fixed; inset: 0; background: rgba(5,7,11,0.6); display: none;
  align-items: center; justify-content: center; z-index: 95; padding: 20px;
}
.dialog-overlay.visible { display: flex; }
.dialog-card {
  background: var(--panel); border: 1px solid var(--panel-border); border-radius: var(--radius);
  padding: 22px; width: min(420px, 100%); box-shadow: var(--shadow);
}
.dialog-card h3 { font-family: var(--font-display); margin: 0 0 14px; font-size: 1.1rem; }
.dialog-card input {
  width: 100%; padding: 10px 12px; border-radius: 7px; border: 1px solid var(--panel-border);
  background: var(--bg-soft); color: var(--text); font-size: 0.9rem; margin-bottom: 12px;
}
.field-row { display: flex; gap: 10px; margin-bottom: 4px; }
.field-row label {
  flex: 1; font-size: 0.75rem; color: var(--text-dim); display: flex; flex-direction: column; gap: 4px;
}
.field-row input { margin-bottom: 8px; }
.calc-preview {
  flex: 1; font-size: 0.78rem; color: var(--text-dim); background: var(--bg-soft);
  border: 1px solid var(--panel-border); border-radius: 7px; padding: 8px 10px; display: flex;
  flex-direction: column; gap: 4px; justify-content: center;
}
.calc-preview span { color: var(--green); font-family: var(--font-mono); }
.km-warning {
  background: rgba(240, 87, 107, 0.1); border: 1px solid var(--danger); color: var(--danger);
  padding: 8px 11px; border-radius: 7px; font-size: 0.78rem; margin-bottom: 12px; line-height: 1.5;
}
.fuel-table .abgelesen-cell { font-family: var(--font-mono); color: var(--violet, #a78bfa); }
.fuel-table .abgelesen-cell .delta { color: var(--text-dim); font-size: 0.75rem; }

/* ---------- Druckansicht (PDF-Export) ---------- */
.print-only { display: none; }
@media print {
  body * { visibility: hidden; }
  #print-view, #print-view * { visibility: visible; }
  #print-view {
    display: block; position: absolute; top: 0; left: 0; width: 100%;
    background: #fff; color: #111; font-family: Arial, sans-serif; padding: 20px;
  }
  #print-view h1 { font-size: 1.3rem; margin: 0 0 4px; }
  #print-view .print-sub { color: #555; font-size: 0.85rem; margin-bottom: 14px; }
  #print-view .print-stats { display: flex; gap: 20px; margin-bottom: 16px; font-size: 0.82rem; }
  #print-view .print-stats b { display: block; font-size: 1rem; }
  #print-view table { width: 100%; border-collapse: collapse; font-size: 0.75rem; }
  #print-view th, #print-view td { border: 1px solid #999; padding: 5px 7px; text-align: left; }
  #print-view th { background: #eee; }
}
.color-row { display: flex; gap: 8px; margin: 4px 0 18px; }
.color-dot { width: 24px; height: 24px; border-radius: 50%; cursor: pointer; border: 2px solid transparent; }
.color-dot.selected { border-color: var(--text); }
.dialog-actions { display: flex; align-items: center; gap: 8px; }
.dialog-actions .spacer { flex: 1; }

/* ---------- Toast ---------- */
#toast {
  position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--panel); border: 1px solid var(--panel-border); color: var(--text); padding: 10px 18px;
  border-radius: 8px; font-size: 0.85rem; box-shadow: var(--shadow); opacity: 0; pointer-events: none;
  transition: opacity 0.2s, transform 0.2s; z-index: 200;
}
#toast.visible { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  header.topbar { padding: 10px 12px; gap: 8px; }
  .brand-tag { display: none; }
  .btn-primary span { display: none; }
  .btn-primary { padding: 9px 12px; }
  main.content { padding: 14px; }
  .field-row { flex-direction: column; }
}