/* ═══════════════════════════════════════════════════════════
   BMW M PERFORMANCE DASHBOARD — DESIGN SYSTEM
   Based on DESIGN.md tokens
═══════════════════════════════════════════════════════════ */

/* ── TOKENS ── */
:root {
  --color-canvas:          #000000;
  --color-surface-soft:    #0d0d0d;
  --color-surface-card:    #1a1a1a;
  --color-surface-elevated:#262626;
  --color-carbon:          #2b2b2b;
  --color-hairline:        #3c3c3c;
  --color-hairline-strong: #262626;
  --color-muted:           #7e7e7e;
  --color-body:            #bbbbbb;
  --color-body-strong:     #e6e6e6;
  --color-white:           #ffffff;
  --color-m-blue-light:    #0066b1;
  --color-m-blue-dark:     #1c69d4;
  --color-m-red:           #e22718;
  --color-warning:         #f4b400;
  --color-success:         #0fa336;
  --color-purple:          #9b59b6;

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --sp-xxs: 4px;
  --sp-xs:  8px;
  --sp-sm:  12px;
  --sp-md:  16px;
  --sp-lg:  24px;
  --sp-xl:  40px;
  --sp-xxl: 64px;
  --sp-sec: 96px;

  --nav-h: 64px;
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--color-canvas);
  color: var(--color-white);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 300;
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
}
button { cursor: pointer; border: none; background: none; font-family: var(--font); }
canvas { display: block; }

/* ═══════════════════════════════════════════════════════════
   TOP NAV
═══════════════════════════════════════════════════════════ */
.top-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-canvas);
  border-bottom: 1px solid var(--color-hairline);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  padding: 0 var(--sp-lg);
  max-width: 1600px;
  margin: 0 auto;
  gap: var(--sp-lg);
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  flex-shrink: 0;
}

.m-roundel {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-m-blue-light) 0%, var(--color-m-blue-dark) 50%, var(--color-m-red) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.roundel-m {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 0;
  line-height: 1;
}

.nav-brand {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.brand-bmw {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--color-muted);
  line-height: 1;
}

.brand-m {
  display: none;
}

.brand-label {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--color-white);
  line-height: 1;
}

/* Nav tabs */
.nav-tabs {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav-tab {
  padding: 0 var(--sp-md);
  height: var(--nav-h);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--color-muted);
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  white-space: nowrap;
}

.nav-tab:hover { color: var(--color-body-strong); }

.nav-tab.active {
  color: var(--color-white);
  border-bottom-color: var(--color-white);
}

/* Nav right */
.nav-right {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  flex-shrink: 0;
}

.session-badge {
  display: flex;
  align-items: center;
  gap: var(--sp-xs);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--color-success);
}

.session-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-success);
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.nav-time {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-body);
  font-variant-numeric: tabular-nums;
}

/* M stripe under nav */
.m-stripe-nav {
  height: 3px;
  background: linear-gradient(to right,
    var(--color-m-blue-light) 0%,
    var(--color-m-blue-light) 33.3%,
    var(--color-m-blue-dark) 33.3%,
    var(--color-m-blue-dark) 66.6%,
    var(--color-m-red) 66.6%,
    var(--color-m-red) 100%
  );
}

/* ═══════════════════════════════════════════════════════════
   HERO BAND
═══════════════════════════════════════════════════════════ */
.hero-band {
  position: relative;
  height: 340px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.hero-photo {
  position: absolute;
  inset: 0;
}

.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  display: block;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0,0,0,0.1) 0%,
    rgba(0,0,0,0.4) 40%,
    rgba(0,0,0,0.85) 80%,
    rgba(0,0,0,1) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 var(--sp-lg) var(--sp-lg);
  max-width: 1600px;
  margin: 0 auto;
  width: 100%;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: var(--sp-xs);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--color-m-blue-dark);
  margin-bottom: var(--sp-xs);
}

.eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-m-red);
  animation: pulse 1.5s ease-in-out infinite;
}

.hero-title {
  font-size: 56px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -1px;
  color: var(--color-white);
  text-transform: uppercase;
  margin-bottom: var(--sp-xs);
}

.hero-sub {
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 2px;
  color: var(--color-body);
}

/* Hero spec strip */
.hero-spec-strip {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--color-hairline);
  padding: var(--sp-md) var(--sp-lg);
  max-width: 100%;
}

.hero-spec {
  display: flex;
  align-items: baseline;
  gap: 4px;
  padding: 0 var(--sp-xl);
  flex-direction: row;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-xs);
}

.hero-spec:first-child { padding-left: var(--sp-lg); }

.spec-val {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.spec-unit {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--color-m-blue-dark);
}

.spec-lbl {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--color-muted);
  width: 100%;
}

.hero-spec-divider {
  width: 1px;
  height: 40px;
  background: var(--color-hairline);
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════════════
   DASHBOARD GRID
═══════════════════════════════════════════════════════════ */
.dashboard-grid {
  display: grid;
  grid-template-columns: 280px 1fr 280px;
  gap: 1px;
  background: var(--color-hairline);
  min-height: calc(100vh - var(--nav-h) - 340px - 48px);
}

.col-left,
.col-center,
.col-right {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--color-hairline);
}

/* ═══════════════════════════════════════════════════════════
   PANELS
═══════════════════════════════════════════════════════════ */
.panel {
  background: var(--color-surface-card);
  padding: var(--sp-md);
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--sp-sm);
  border-bottom: 1px solid var(--color-hairline);
}

.panel-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--color-white);
}

.panel-meta {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 1px;
  color: var(--color-muted);
}

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

/* ═══════════════════════════════════════════════════════════
   LAP TIMER PANEL
═══════════════════════════════════════════════════════════ */
.timer-controls {
  display: flex;
  gap: var(--sp-xs);
}

.btn-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-surface-elevated);
  color: var(--color-body);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, color 0.2s;
}

.btn-icon:hover {
  background: var(--color-hairline);
  color: var(--color-white);
}

.btn-icon svg {
  width: 14px;
  height: 14px;
}

.lap-timer-display {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: var(--sp-sm) 0;
}

.lap-time-main {
  font-size: 40px;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: -1px;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.lap-time-delta {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
}

.lap-time-delta.positive { color: var(--color-m-red); }
.lap-time-delta.negative { color: var(--color-success); }

.sector-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-hairline);
  border: 1px solid var(--color-hairline);
}

.sector-cell {
  background: var(--color-surface-soft);
  padding: var(--sp-sm);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sector-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--color-muted);
}

.sector-time {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-white);
  font-variant-numeric: tabular-nums;
}

.sector-time.green { color: var(--color-success); }
.sector-time.purple { color: var(--color-purple); }

.best-lap-row {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  padding-top: var(--sp-xs);
  border-top: 1px solid var(--color-hairline);
}

.best-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--color-muted);
}

.best-time {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-white);
  font-variant-numeric: tabular-nums;
}

.best-gap {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  margin-left: auto;
}

.best-gap.green { color: var(--color-success); }

/* ═══════════════════════════════════════════════════════════
   PEDAL TRACE
═══════════════════════════════════════════════════════════ */
.pedal-live-row {
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
}

.pedal-live {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

.pedal-lbl {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--color-muted);
  width: 60px;
  flex-shrink: 0;
}

.pedal-bar-track {
  flex: 1;
  height: 6px;
  background: var(--color-surface-elevated);
}

.pedal-bar {
  height: 100%;
  transition: width 0.1s linear;
}

.throttle-bar { background: var(--color-success); }
.brake-bar { background: var(--color-m-red); }

.pedal-pct {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-body-strong);
  width: 32px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* ═══════════════════════════════════════════════════════════
   G-FORCE
═══════════════════════════════════════════════════════════ */
.gforce-container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-sm) 0;
}

.gforce-center-label {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.gforce-val {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.gforce-unit {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--color-muted);
}

/* ═══════════════════════════════════════════════════════════
   TYRE TEMPS
═══════════════════════════════════════════════════════════ */
.tyre-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--color-hairline);
}

.tyre-cell {
  background: var(--color-surface-soft);
  padding: var(--sp-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-xs);
}

.tyre-pos {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--color-muted);
}

.tyre-ring {
  position: relative;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tyre-ring svg {
  width: 80px;
  height: 80px;
  position: absolute;
  top: 0;
  left: 0;
}

.tyre-temp {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-white);
  position: relative;
  z-index: 1;
  font-variant-numeric: tabular-nums;
}

.tyre-wear {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 1px;
  color: var(--color-muted);
}

.tyre-wear span {
  color: var(--color-body-strong);
  font-weight: 700;
}

/* Hot tyre indicator */
.tyre-cell.hot .tyre-temp { color: var(--color-m-red); }
.tyre-cell.optimal .tyre-temp { color: var(--color-success); }

/* ═══════════════════════════════════════════════════════════
   ENGINE SPEC CELLS
═══════════════════════════════════════════════════════════ */
.status-pill {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  padding: 3px 8px;
  border: 1px solid currentColor;
}

.status-pill.green { color: var(--color-success); }
.status-pill.red { color: var(--color-m-red); }
.status-pill.yellow { color: var(--color-warning); }

.spec-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--color-hairline);
}

.spec-cell {
  background: var(--color-surface-soft);
  padding: var(--sp-md) var(--sp-sm);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.spec-cell-val {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.spec-cell-unit {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-m-blue-dark);
}

.spec-cell-lbl {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--color-muted);
  margin-top: 2px;
}

.fuel-bar-wrap {
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
}

.fuel-bar-track {
  height: 4px;
  background: var(--color-surface-elevated);
  width: 100%;
}

.fuel-bar-fill {
  height: 100%;
  background: linear-gradient(to right, var(--color-m-blue-light), var(--color-m-blue-dark));
  transition: width 1s ease;
}

.fuel-bar-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--color-muted);
}

/* ═══════════════════════════════════════════════════════════
   POWER DELIVERY
═══════════════════════════════════════════════════════════ */
.power-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-hairline);
  border-top: 1px solid var(--color-hairline);
  padding-top: var(--sp-sm);
}

.power-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--sp-xs);
}

.ps-val {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-white);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.ps-lbl {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--color-muted);
}

/* ═══════════════════════════════════════════════════════════
   LEADERBOARD
═══════════════════════════════════════════════════════════ */
.leaderboard-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--color-hairline);
}

.lb-row {
  display: grid;
  grid-template-columns: 20px 1fr 50px 70px 50px;
  align-items: center;
  gap: var(--sp-xs);
  padding: var(--sp-sm) var(--sp-sm);
  background: var(--color-surface-soft);
  font-size: 11px;
  font-weight: 400;
  color: var(--color-body);
  transition: background 0.15s;
}

.lb-row:hover { background: var(--color-surface-elevated); }

.lb-row-1 { background: rgba(28, 105, 212, 0.12); }
.lb-row-1 .lb-pos { color: var(--color-m-blue-dark); font-weight: 700; }

.lb-row-2 { background: rgba(28, 105, 212, 0.06); }

.lb-row-me {
  background: rgba(255, 255, 255, 0.06);
  border-left: 2px solid var(--color-white);
}

.lb-row-me .lb-name,
.lb-row-me .lb-time {
  color: var(--color-white);
  font-weight: 700;
}

.lb-pos {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-muted);
  text-align: center;
}

.lb-name {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--color-body-strong);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lb-car {
  font-size: 10px;
  color: var(--color-muted);
  letter-spacing: 0.5px;
}

.lb-time {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-body-strong);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.lb-gap {
  font-size: 11px;
  color: var(--color-muted);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* ═══════════════════════════════════════════════════════════
   LEGEND
═══════════════════════════════════════════════════════════ */
.legend-row {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.legend-txt {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-muted);
}

/* ═══════════════════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════════════════ */
.dash-footer {
  background: var(--color-canvas);
  border-top: 1px solid var(--color-hairline);
}

.m-stripe-footer {
  height: 3px;
  background: linear-gradient(to right,
    var(--color-m-blue-light) 0%,
    var(--color-m-blue-light) 33.3%,
    var(--color-m-blue-dark) 33.3%,
    var(--color-m-blue-dark) 66.6%,
    var(--color-m-red) 66.6%,
    var(--color-m-red) 100%
  );
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-md) var(--sp-lg);
  max-width: 1600px;
  margin: 0 auto;
}

.footer-logo {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--color-white);
}

.footer-copy {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 1.5px;
  color: var(--color-muted);
}

.footer-version {
  font-size: 10px;
  color: var(--color-muted);
  letter-spacing: 1px;
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════════════════ */
@media (max-width: 1200px) {
  .dashboard-grid {
    grid-template-columns: 260px 1fr 260px;
  }
}

@media (max-width: 960px) {
  .dashboard-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
  }

  .col-left { grid-column: 1; }
  .col-center { grid-column: 2; }
  .col-right { grid-column: 1 / -1; flex-direction: row; flex-wrap: wrap; }
  .col-right .panel { flex: 1; min-width: 260px; }

  .hero-title { font-size: 40px; }
}

@media (max-width: 640px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }

  .col-left, .col-center, .col-right {
    grid-column: 1;
  }

  .col-right { flex-direction: column; }

  .hero-title { font-size: 32px; }
  .hero-spec-strip { overflow-x: auto; }
  .hero-spec { padding: 0 var(--sp-md); }

  .nav-tabs { display: none; }
  .brand-label { font-size: 11px; }
}

/* ═══════════════════════════════════════════════════════════
   CHART GLOBAL OVERRIDES
═══════════════════════════════════════════════════════════ */
.chart-wrap canvas {
  width: 100% !important;
}