/* HPS Kit Crafter — Suspension Control App */

:root {
  --bg-page: oklch(0.96 0.003 240);
  --text-page: oklch(0.25 0.005 240);
  --accent: oklch(0.62 0.11 200);
  --accent-pressed: oklch(0.55 0.12 200);
  --warn: oklch(0.70 0.15 60);
  --alarm: oklch(0.62 0.19 25);
  --good: oklch(0.68 0.13 155);
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  font-family: -apple-system, "SF Pro Display", "SF Pro", system-ui, Inter, sans-serif;
  background: var(--bg-page);
  color: var(--text-page);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.page {
  min-height: 100vh;
  padding: 48px 24px 120px;
  background:
    radial-gradient(1200px 600px at 20% -10%, oklch(0.94 0.02 200 / 0.5), transparent 60%),
    radial-gradient(900px 500px at 90% 10%, oklch(0.93 0.025 30 / 0.35), transparent 55%),
    var(--bg-page);
}

.page-header {
  max-width: 1400px;
  margin: 0 auto 40px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.page-title {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
  color: oklch(0.22 0.01 240);
}

.page-sub {
  font-size: 15px;
  color: oklch(0.45 0.01 240);
  max-width: 640px;
  line-height: 1.5;
  margin: 0;
}

.page-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.meta-chip {
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 6px 10px;
  border-radius: 999px;
  background: oklch(0.99 0 0);
  color: oklch(0.35 0.01 240);
  border: 1px solid oklch(0.88 0.005 240);
}

.canvas {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  gap: 48px;
  justify-content: center;
  flex-wrap: wrap;
}

.phone-holder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.phone-label {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  color: oklch(0.5 0.01 240);
}

/* Tweaks panel */
.tweaks {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 300px;
  background: oklch(0.99 0 0);
  border: 1px solid oklch(0.88 0.005 240);
  border-radius: 20px;
  padding: 16px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
  font-family: -apple-system, system-ui, sans-serif;
  z-index: 100;
  max-height: 80vh;
  overflow: auto;
}

.tweaks.hidden { display: none; }

.tweaks h3 {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  color: oklch(0.3 0.01 240);
}

.tweak-group {
  margin-bottom: 14px;
}
.tweak-group:last-child { margin-bottom: 0; }

.tweak-label {
  font-size: 12px;
  font-weight: 600;
  color: oklch(0.4 0.01 240);
  margin-bottom: 6px;
  display: block;
}

.tweak-options {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 4px;
}

.tweak-chip {
  font-size: 11px;
  padding: 6px 2px;
  border-radius: 10px;
  border: 1px solid oklch(0.88 0.005 240);
  background: oklch(0.98 0 0);
  cursor: pointer;
  font-weight: 600;
  color: oklch(0.4 0.01 240);
  text-align: center;
  transition: all 0.15s;
}
.tweak-chip.active {
  background: oklch(0.22 0.01 240);
  border-color: oklch(0.22 0.01 240);
  color: #fff;
}

.tweak-desc {
  font-size: 11px;
  color: oklch(0.5 0.01 240);
  margin-top: 6px;
  line-height: 1.4;
}

/* Prototype internals */
.hps-screen {
  height: 100%;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
}

.hps-screen::-webkit-scrollbar { width: 0; }

/* Vehicle illustration shared */
.vehicle-top {
  position: relative;
  aspect-ratio: 1.5;
  width: 100%;
}