/* GMC Lease Tracker — dark-first, mobile-first automotive dashboard styling. */

:root {
  --bg: #0b0d10;
  --bg-elev: #12151a;
  --bg-card: #161a20;
  --bg-input: #0f1216;
  --border: #262b33;
  --border-strong: #343a44;
  --text: #eceef1;
  --text-muted: #9aa3ad;
  --text-dim: #6b7480;
  --accent: #c8102e;         /* GMC-style red */
  --accent-hover: #e0233f;
  --good: #35c26e;
  --warn: #f2b134;
  --bad: #ff4d5e;
  --info: #5aa9ff;
  --shadow: 0 1px 0 rgba(255,255,255,0.03) inset, 0 10px 30px rgba(0,0,0,0.35);
  --radius: 16px;
  --radius-sm: 10px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-num: "SF Pro Display", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  --c-actual: #eceef1;
  --c-ideal: #9aa3ad;
  --c-limit: #ff4d5e;
  --c-hist: #f2b134;
  --c-d30: #c8102e;
  --c-d14: #ff8a5b;
  --c-d7: #ffc46b;
  --c-required: #35c26e;

  --nav-h: 64px;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #eef0f3;
    --bg-elev: #ffffff;
    --bg-card: #ffffff;
    --bg-input: #f5f6f8;
    --border: #dfe3e8;
    --border-strong: #c9cfd7;
    --text: #12151a;
    --text-muted: #5b6470;
    --text-dim: #8a929c;
    --good: #1f9d55;
    --warn: #c98a00;
    --bad: #d21f3c;
    --info: #1f6fd6;
    --shadow: 0 6px 20px rgba(20, 24, 30, 0.08);
    --c-actual: #12151a;
    --c-ideal: #6b7480;
    --c-limit: #d21f3c;
    --c-hist: #c98a00;
    --c-d30: #c8102e;
    --c-d14: #e0642e;
    --c-d7: #d9a11f;
    --c-required: #1f9d55;
    color-scheme: light;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  padding-bottom: calc(var(--nav-h) + env(safe-area-inset-bottom));
  background-image:
    radial-gradient(1200px 500px at 50% -200px, rgba(200, 16, 46, 0.14), transparent 60%);
  background-attachment: fixed;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3 { margin: 0; font-weight: 650; letter-spacing: -0.01em; }
h2 { font-size: 1.05rem; }
.h3 { font-size: 0.95rem; margin: 1rem 0 0.5rem; }
p { margin: 0.5rem 0 0; }
strong { font-weight: 650; }
.muted { color: var(--text-muted); }
.small { font-size: 0.82rem; }
.text-good { color: var(--good); }
.text-bad { color: var(--bad); }
.text-warn { color: var(--warn); }
.unit {
  font-size: 0.45em;
  color: var(--text-muted);
  margin-left: 0.25em;
  font-weight: 500;
  letter-spacing: 0;
}

/* Top bar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--border);
  padding-top: env(safe-area-inset-top);
}
.topbar-inner {
  max-width: 880px;
  margin: 0 auto;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 9px;
  background:
    linear-gradient(135deg, var(--accent), #7a0a1c);
  box-shadow: 0 0 0 1px rgba(255,255,255,0.08) inset, 0 4px 14px rgba(200,16,46,0.35);
  position: relative;
}
.brand-mark::after {
  content: ""; position: absolute; inset: 9px; border-radius: 50%;
  border: 3px solid rgba(255,255,255,0.9); border-right-color: transparent; border-bottom-color: transparent;
  transform: rotate(-45deg);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; font-size: 0.8rem; }
.brand-vehicle { color: var(--text-muted); font-size: 0.78rem; }

/* Layout */
.main {
  max-width: 880px;
  margin: 0 auto;
  padding: 14px 14px 24px;
  display: grid;
  gap: 14px;
}
@media (min-width: 720px) {
  .main { padding: 20px; gap: 18px; }
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}
.card-head { margin-bottom: 12px; }
.card-head p { margin-top: 2px; }

/* Hero */
.hero {
  background:
    linear-gradient(160deg, color-mix(in srgb, var(--bg-card) 70%, #000) 0%, var(--bg-card) 60%),
    var(--bg-card);
  border-color: var(--border-strong);
}
.hero-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.eyebrow {
  text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.72rem; color: var(--text-muted); font-weight: 600;
}
.hero-number {
  font-family: var(--font-num);
  font-size: clamp(3rem, 15vw, 4.6rem);
  font-weight: 750;
  letter-spacing: -0.03em;
  line-height: 1;
  margin: 8px 0 6px;
  font-variant-numeric: tabular-nums;
}
.hero-sub { font-size: 0.85rem; }
.progress {
  position: relative;
  height: 10px;
  border-radius: 999px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  margin: 14px 0 6px;
  overflow: visible;
}
.progress-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--good), color-mix(in srgb, var(--good) 60%, var(--warn)));
}
.progress-fill.bad { background: linear-gradient(90deg, var(--warn), var(--bad)); }
.progress-marker {
  position: absolute; top: -5px; width: 2px; height: 18px; background: var(--text);
  transform: translateX(-1px); border-radius: 2px; box-shadow: 0 0 0 2px var(--bg-card);
}
.progress-labels { display: flex; justify-content: space-between; color: var(--text-muted); gap: 8px; }

/* Badge */
.badge {
  font-size: 0.74rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase;
  padding: 5px 10px; border-radius: 999px; white-space: nowrap;
  border: 1px solid transparent;
}
.badge.tone-good { color: var(--good); background: color-mix(in srgb, var(--good) 14%, transparent); border-color: color-mix(in srgb, var(--good) 35%, transparent); }
.badge.tone-warn { color: var(--warn); background: color-mix(in srgb, var(--warn) 14%, transparent); border-color: color-mix(in srgb, var(--warn) 35%, transparent); }
.badge.tone-bad { color: var(--bad); background: color-mix(in srgb, var(--bad) 14%, transparent); border-color: color-mix(in srgb, var(--bad) 35%, transparent); }

/* Stat tiles */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
@media (min-width: 720px) {
  .stat-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
}
.tile {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  box-shadow: var(--shadow);
  min-width: 0;
  position: relative;
  overflow: hidden;
}
.tile::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--border-strong);
}
.tile.tone-good::before { background: var(--good); }
.tile.tone-warn::before { background: var(--warn); }
.tile.tone-bad::before { background: var(--bad); }
.tile.wide { grid-column: 1 / -1; }
@media (min-width: 720px) { .tile.wide { grid-column: span 2; } }
.tile-label { font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-muted); font-weight: 600; }
.tile-value {
  font-family: var(--font-num);
  font-size: clamp(1.6rem, 7.5vw, 2.2rem);
  font-weight: 720;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-top: 4px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tile.tone-bad .tile-value { color: var(--bad); }
.tile.tone-good .tile-value { color: var(--good); }
.tile.tone-warn .tile-value { color: var(--warn); }
.tile-sub { font-size: 0.78rem; color: var(--text-muted); margin-top: 4px; }

/* Alerts */
.alerts { display: grid; gap: 8px; }
.alert {
  border-radius: var(--radius-sm);
  padding: 10px 12px 10px 14px;
  border: 1px solid var(--border);
  border-left-width: 4px;
  background: var(--bg-card);
}
.alert-title { font-weight: 650; font-size: 0.9rem; }
.alert-body { font-size: 0.85rem; color: var(--text-muted); margin-top: 2px; }
.alert-danger { border-left-color: var(--bad); }
.alert-danger .alert-title { color: var(--bad); }
.alert-warning { border-left-color: var(--warn); }
.alert-warning .alert-title { color: var(--warn); }
.alert-success { border-left-color: var(--good); }
.alert-success .alert-title { color: var(--good); }
.alert-info { border-left-color: var(--info); }
.alert-info .alert-title { color: var(--info); }

/* Key/value rows */
.kv { margin: 0; display: grid; gap: 0; }
.kv-row {
  display: flex; justify-content: space-between; align-items: baseline; gap: 12px;
  padding: 8px 0; border-top: 1px solid var(--border); font-size: 0.9rem;
}
.kv-row:first-child { border-top: 0; }
.kv-row dt { color: var(--text-muted); margin: 0; flex: 1 1 45%; }
.kv-row dd { margin: 0; text-align: right; flex: 1 1 55%; font-variant-numeric: tabular-nums; }

/* Charts */
.chart { width: 100%; height: auto; display: block; }
.chart .grid { stroke: var(--border); stroke-width: 1; }
.chart .tick { fill: var(--text-muted); font-size: 10px; font-family: var(--font); }
.chart .tick.strong { fill: var(--text); font-weight: 600; }
.chart .today { stroke: var(--text-dim); stroke-width: 1; stroke-dasharray: 2 2; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 10px; font-size: 0.78rem; color: var(--text-muted); }
.legend-item { display: inline-flex; align-items: center; gap: 6px; }

.bars { display: grid; gap: 12px; }
.bar-head { display: flex; justify-content: space-between; font-size: 0.9rem; margin-bottom: 4px; }
.bar-track { height: 12px; background: var(--bg-input); border: 1px solid var(--border); border-radius: 999px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 999px; }
.bar-fill.miles { background: linear-gradient(90deg, var(--accent), var(--bad)); }
.bar-fill.time { background: linear-gradient(90deg, var(--info), #8cc4ff); }
.bar-detail { margin-top: 3px; }

/* Forms */
.form { display: grid; gap: 12px; }
.field { display: grid; gap: 6px; min-width: 0; }
.field-row { display: grid; gap: 12px; grid-template-columns: 1fr; }
@media (min-width: 480px) { .field-row { grid-template-columns: 1fr 1fr; } }
label { font-size: 0.82rem; font-weight: 600; color: var(--text-muted); }
input[type="text"], input[type="number"], input[type="date"], select {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: var(--bg-input);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 12px 12px;
  min-height: 46px;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}
input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 28%, transparent); }
.input-big {
  font-family: var(--font-num);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  padding: 10px 14px;
  font-variant-numeric: tabular-nums;
}
.preview { min-height: 1.2em; }
.errors { margin: 0; padding-left: 18px; color: var(--bad); font-size: 0.85rem; }
.calc-result { margin-top: 4px; }
.calc-big { font-family: var(--font-num); font-size: 2.2rem; font-weight: 750; letter-spacing: -0.02em; line-height: 1.1; }

/* Buttons */
.btn {
  font: inherit; font-weight: 650; font-size: 0.95rem;
  border-radius: 12px; padding: 12px 16px; min-height: 46px;
  border: 1px solid var(--border-strong);
  background: var(--bg-elev); color: var(--text);
  cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  transition: transform 0.06s ease, background 0.15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; box-shadow: 0 6px 18px rgba(200,16,46,0.35); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { background: transparent; }
.btn-ghost:hover { background: var(--bg-elev); }
.btn-block { width: 100%; }
.btn-sm { padding: 7px 10px; min-height: 34px; font-size: 0.82rem; border-radius: 9px; }
.btn.danger { color: var(--bad); }
.btn-row { display: flex; flex-wrap: wrap; gap: 8px; }
.cta-row { display: flex; justify-content: center; padding: 4px 0 8px; }

/* History */
.history { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.history-item {
  display: grid; gap: 6px;
  padding: 12px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--bg-elev);
}
.history-main { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.history-odo { font-family: var(--font-num); font-size: 1.5rem; font-weight: 720; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.history-date { color: var(--text-muted); font-size: 0.85rem; }
.history-note { color: var(--text); margin-top: 2px; }
.history-actions { display: flex; gap: 6px; justify-content: flex-end; }

/* Projections */
.proj-list { display: grid; gap: 10px; }
@media (min-width: 720px) { .proj-list { grid-template-columns: 1fr 1fr; } }
.proj {
  border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px; background: var(--bg-elev);
  border-left-width: 4px;
}
.proj.tone-bad { border-left-color: var(--bad); }
.proj.tone-good { border-left-color: var(--good); }
.proj-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; margin-bottom: 6px; }
.proj-title { font-weight: 700; }
.proj-cost { font-family: var(--font-num); font-size: 1.5rem; font-weight: 750; letter-spacing: -0.02em; white-space: nowrap; font-variant-numeric: tabular-nums; }
.proj.tone-bad .proj-cost { color: var(--bad); }
.proj.tone-good .proj-cost { color: var(--good); }

.table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.table th, .table td { padding: 8px 4px; border-bottom: 1px solid var(--border); text-align: left; }
.table th { color: var(--text-muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; }
.table .num { text-align: right; font-variant-numeric: tabular-nums; }
.notes { margin: 0; padding-left: 18px; color: var(--text-muted); font-size: 0.88rem; display: grid; gap: 6px; }
.notes strong { color: var(--text); }

/* Trips */
.trips { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.trip { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px; background: var(--bg-elev); }
.trip-done { opacity: 0.65; }
.trip-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; margin-bottom: 4px; }
.trip-title { font-weight: 700; }
.trip-miles { font-family: var(--font-num); font-size: 1.4rem; font-weight: 720; white-space: nowrap; font-variant-numeric: tabular-nums; }
.trip-actions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.pill { padding: 1px 8px; border-radius: 999px; font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; }
.pill-planned { background: color-mix(in srgb, var(--info) 18%, transparent); color: var(--info); }
.pill-completed { background: color-mix(in srgb, var(--good) 18%, transparent); color: var(--good); }
.pill-cancelled { background: color-mix(in srgb, var(--text-dim) 25%, transparent); color: var(--text-muted); }

/* Bottom nav */
.bottomnav {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 30;
  height: calc(var(--nav-h) + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom);
  background: color-mix(in srgb, var(--bg-elev) 88%, transparent);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-top: 1px solid var(--border);
  display: grid; grid-template-columns: repeat(5, 1fr);
}
.bottomnav a {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  font-size: 0.68rem; font-weight: 600; color: var(--text-muted); letter-spacing: 0.02em;
  -webkit-tap-highlight-color: transparent;
}
.bottomnav a.active { color: var(--text); }
.bottomnav .ico { font-size: 1.25rem; line-height: 1; }
.bottomnav .nav-add .ico.plus {
  width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center;
  background: var(--accent); color: #fff; font-size: 1.6rem; font-weight: 700;
  box-shadow: 0 6px 18px rgba(200,16,46,0.4); margin-top: -18px;
  border: 3px solid var(--bg);
}
.bottomnav .nav-add { color: var(--text-muted); }
.bottomnav .nav-add.active { color: var(--text); }
@media (min-width: 720px) {
  .bottomnav { max-width: 880px; margin: 0 auto; border-radius: 18px 18px 0 0; border-left: 1px solid var(--border); border-right: 1px solid var(--border); }
}

/* Toast */
.toast {
  position: fixed; left: 50%; bottom: calc(var(--nav-h) + env(safe-area-inset-bottom) + 14px);
  transform: translate(-50%, 10px); opacity: 0; pointer-events: none;
  background: var(--bg-elev); color: var(--text); border: 1px solid var(--border-strong);
  border-radius: 999px; padding: 10px 16px; font-size: 0.9rem; font-weight: 600; z-index: 40;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4); transition: opacity 0.2s ease, transform 0.2s ease;
  max-width: calc(100vw - 32px); text-align: center;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast-success { border-color: var(--good); }
.toast-error { border-color: var(--bad); }

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