/* GT Trader — Gran Turismo design system */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&family=Titillium+Web:wght@400;600;700&display=swap');

:root {
  --carbon: #0a0e14;
  --asphalt: #12171f;
  --glass: rgba(255, 255, 255, 0.045);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-hover: rgba(255, 255, 255, 0.07);
  --gt-blue: #00a3ff;
  --gt-purple: #b388ff;
  --gt-green: #00e676;
  --gt-red: #ff3b30;
  --gt-amber: #ffb300;
  --gt1-red: #c41e3a;
  --gt1-blue: #1e4db7;
  --gt1-gold: #ffd700;
  --text: #e8ecf1;
  --text-dim: #8b95a5;
  --mono: 'JetBrains Mono', monospace;
  --heading: 'Titillium Web', sans-serif;
  --body: 'Inter', sans-serif;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --radius: 12px;
  --nav-w: 96px;
  --header-h: 64px;
  --hit: 44px;
}

*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100vh;
  background: var(--carbon);
  color: var(--text);
  font-family: var(--body);
  font-size: 14px;
  line-height: 1.5;
  overflow-wrap: anywhere;
  word-break: break-word;
}

body {
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 163, 255, 0.12), transparent),
    radial-gradient(ellipse 60% 40% at 100% 100%, rgba(179, 136, 255, 0.06), transparent),
    var(--carbon);
}

a { color: var(--gt-blue); text-decoration: none; transition: color 0.2s var(--ease); }
a:hover { color: #5cc4ff; }

.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* Layout — nav is position:fixed, so the shell stays block flow and
   .gt-main is offset with margin-left. A grid here collapses main to zero. */
.gt-shell {
  min-height: 100vh;
}

.gt-nav {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--nav-w);
  background: rgba(10, 14, 20, 0.85);
  backdrop-filter: blur(20px);
  border-right: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px 0;
  z-index: 100;
}

.gt-nav-logo {
  font-family: var(--heading);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--gt-blue);
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  margin-bottom: 24px;
}

.gt-nav a {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: calc(var(--nav-w) - 16px);
  min-height: var(--hit);
  border-radius: 10px;
  color: var(--text-dim);
  margin: 3px 0;
  font-size: 15px;
  gap: 3px;
  transition: all 0.2s var(--ease);
}

.gt-nav-label {
  font-family: var(--heading);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1;
  white-space: nowrap;
}

.gt-nav a:hover, .gt-nav a.active {
  background: var(--glass-hover);
  color: var(--gt-blue);
  box-shadow: 0 0 20px rgba(0, 163, 255, 0.15);
}

.gt-main {
  margin-left: var(--nav-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.gt-header {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  border-bottom: 1px solid var(--glass-border);
  background: rgba(18, 23, 31, 0.6);
  backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.gt-header h1 {
  font-family: var(--heading);
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.gt-header-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  min-width: 0;
}

.gt-stat-pill {
  text-align: right;
}

.gt-stat-pill .label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}

.gt-stat-pill .value {
  font-family: var(--mono);
  font-size: clamp(0.85rem, 2vw, 1.1rem);
  font-weight: 600;
}

.gt-content {
  padding: 24px;
  padding-bottom: 80px;
  flex: 1;
  min-width: 0;
}

/* Glass panels */
.gt-panel {
  background: var(--glass);
  backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 20px;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.gt-panel:hover { box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3); }

.gt-panel-title {
  font-family: var(--heading);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  margin: 0 0 16px;
}

/* HUD tiles */
.gt-hud-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.gt-hud-tile {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  min-height: 88px;
  min-width: 0;
}

.gt-hud-tile .label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.gt-hud-tile .value {
  font-family: var(--mono);
  font-size: clamp(1rem, 3vw, 1.5rem);
  font-weight: 600;
}

.positive { color: var(--gt-green); }
.negative { color: var(--gt-red); }
.neutral { color: var(--text); }
.purple { color: var(--gt-purple); }
.amber { color: var(--gt-amber); }

/* Tachometer */
.gt-tacho-wrap {
  display: flex;
  justify-content: center;
  margin: 24px 0;
}

.gt-tacho {
  width: 280px;
  height: 160px;
}

.gt-tacho-value {
  text-align: center;
  margin-top: -40px;
}

.gt-tacho-value .amount {
  font-family: var(--mono);
  font-size: 2rem;
  font-weight: 600;
}

/* Timing tower table */
.gt-table-wrap { overflow-x: auto; }

.gt-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.gt-table th {
  font-family: var(--heading);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--glass-border);
  cursor: pointer;
  user-select: none;
}

.gt-table th:hover { color: var(--gt-blue); }

.gt-table td {
  padding: 9px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  font-family: var(--mono);
  font-size: 12px;
  white-space: nowrap;
}

.gt-table tbody tr:nth-child(odd) td { background: rgba(255,255,255,0.015); }
.gt-table tr:hover td { background: var(--glass-hover); }

.gt-table tr.gated td { opacity: 0.45; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-family: var(--heading);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.badge-p1 { background: linear-gradient(135deg, #ffd700, #ffb300); color: #000; }
.badge-p2 { background: linear-gradient(135deg, #c0c0c0, #9e9e9e); color: #000; }
.badge-p3 { background: linear-gradient(135deg, #cd7f32, #a0522d); color: #fff; }
.badge-gated { background: rgba(255,59,48,0.2); color: var(--gt-red); }
.badge-buy { background: rgba(0,230,118,0.15); color: var(--gt-green); }
.badge-sell { background: rgba(255,59,48,0.15); color: var(--gt-red); }
.badge-hold { background: rgba(139,149,165,0.15); color: var(--text-dim); }

/* Car cards */
.gt-car-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.gt-car-card {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  background: var(--asphalt);
  transition: transform 0.2s var(--ease);
  cursor: default;
}

.gt-car-card:hover { transform: translateY(-4px); }

.gt-car-livery {
  height: 8px;
  background: linear-gradient(90deg, var(--livery-bg), var(--livery-accent));
}

.gt-car-body { padding: 20px; }

.gt-car-symbol {
  font-family: var(--heading);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.gt-car-name {
  color: var(--text-dim);
  font-size: 12px;
  margin-bottom: 16px;
}

.gt-car-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.gt-car-stat .lbl { font-size: 10px; color: var(--text-dim); text-transform: uppercase; }
.gt-car-stat .val { font-family: var(--mono); font-size: 14px; }

/* Engineer radio cards */
.gt-radio-card {
  border-left: 3px solid var(--gt-blue);
  margin-bottom: 16px;
}

.gt-radio-card.sell { border-left-color: var(--gt-red); }
.gt-radio-card.buy { border-left-color: var(--gt-green); }

/* Buttons */
.gt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--hit);
  min-width: var(--hit);
  padding: 0 20px;
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  background: var(--glass);
  color: var(--text);
  font-family: var(--heading);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s var(--ease);
}

.gt-btn:hover {
  background: rgba(0, 163, 255, 0.15);
  border-color: var(--gt-blue);
  color: var(--gt-blue);
}

.gt-btn-primary {
  background: linear-gradient(135deg, rgba(0,163,255,0.3), rgba(0,163,255,0.1));
  border-color: var(--gt-blue);
  color: var(--gt-blue);
}

.gt-btn-danger:hover {
  background: rgba(255,59,48,0.15);
  border-color: var(--gt-red);
  color: var(--gt-red);
}

.gt-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 16px 0; }

/* Setup sliders */
.gt-slider-row {
  display: grid;
  grid-template-columns: 180px 1fr 80px;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  min-height: var(--hit);
}

.gt-slider-row label {
  font-family: var(--heading);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.gt-slider-row input[type=range] {
  width: 100%;
  accent-color: var(--gt-blue);
  height: 6px;
}

.gt-slider-row .mono { text-align: right; }

/* Tooltip */
[data-tip] { position: relative; cursor: help; }
[data-tip]:hover::after {
  content: attr(data-tip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: 8px 12px;
  background: var(--asphalt);
  border: 1px solid var(--glass-border);
  border-radius: 6px;
  font-family: var(--body);
  font-size: 11px;
  white-space: nowrap;
  max-width: 280px;
  white-space: normal;
  z-index: 200;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

/* Modal */
.gt-modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.gt-modal-backdrop.open { display: flex; }

.gt-modal {
  background: var(--asphalt);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 24px;
  max-width: 420px;
  width: 90%;
}

.gt-modal h3 { font-family: var(--heading); margin-top: 0; }

/* Toast */
.gt-toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.gt-toast {
  padding: 12px 20px;
  background: var(--asphalt);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  animation: slideIn 0.3s var(--ease);
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Loader */
.gt-loader {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10,14,20,0.85);
  z-index: 3000;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

.gt-loader.open { display: flex; }

.gt-loader svg { animation: tachoSweep 1.2s var(--ease) infinite; }

@keyframes tachoSweep {
  0% { transform: rotate(-90deg); }
  50% { transform: rotate(90deg); }
  100% { transform: rotate(-90deg); }
}

/* Flash messages */
.gt-flash {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  border: 1px solid var(--glass-border);
  background: rgba(0,163,255,0.1);
}

/* Login */
.gt-login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.gt-login-box {
  width: 100%;
  max-width: 400px;
}

.gt-login-box h1 {
  font-family: var(--heading);
  text-align: center;
  letter-spacing: 0.2em;
  color: var(--gt-blue);
  margin-bottom: 32px;
}

.gt-field {
  margin-bottom: 16px;
}

.gt-field label {
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.gt-field input {
  width: 100%;
  min-height: var(--hit);
  padding: 0 14px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
}

.gt-field input:focus {
  outline: none;
  border-color: var(--gt-blue);
  box-shadow: 0 0 0 2px rgba(0,163,255,0.2);
}

/* Car silhouette */
.gt-car-silhouette {
  width: 100%;
  height: 48px;
  opacity: 0.15;
  fill: currentColor;
  color: var(--livery-accent, var(--gt-blue));
}

/* GT1 scanline overlay on panels */
.gt-panel::before {
  content: '';
  pointer-events: none;
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.03) 2px,
    rgba(0, 0, 0, 0.03) 4px
  );
  opacity: 0.5;
}

.gt-panel { position: relative; overflow: hidden; }

/* Race director */
.gt-race-director { margin-bottom: 20px; }
.gt-session-line { font-size: 1.05rem; margin: 0 0 12px; }
.gt-session-steps { margin: 0 0 16px; padding-left: 20px; color: var(--text-dim); }
.gt-session-steps li { margin-bottom: 6px; }

/* Empty states */
.gt-empty-state {
  text-align: center;
  padding: 48px 24px;
  border: 1px dashed var(--glass-border);
  border-radius: var(--radius);
}
.gt-empty-title { font-family: var(--heading); font-size: 1.2rem; margin: 0 0 8px; }
.gt-empty-sub { color: var(--text-dim); margin: 0 0 20px; }
.gt-empty-error .gt-empty-title { color: var(--gt-red); }

/* Panel head + filters */
.gt-panel-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.gt-panel-head .gt-panel-title { margin: 0; }
.gt-filter-bar { display: flex; gap: 8px; }
.gt-filter-bar .gt-btn.active {
  background: rgba(0, 163, 255, 0.2);
  border-color: var(--gt-blue);
  color: var(--gt-blue);
}

/* Tower table */
.gt-tower-table { table-layout: auto; }
.gt-tower-table .row-name {
  font-size: 10px;
  color: var(--text-dim);
  font-family: var(--body);
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.gt-tower-table .car-cell { width: 60px; padding: 4px 8px; }
.gt-tower-table tbody tr { cursor: pointer; }
.gt-car-icon { width: 52px; height: 18px; display: block; }
.gt-tower-table tr.gt-livery-red { border-left: 3px solid var(--gt1-red); }
.gt-tower-table tr.gt-livery-blue { border-left: 3px solid var(--gt1-blue); }
.gt-tower-table tr.selected td { background: rgba(0, 163, 255, 0.08); }
.gt-tower-table tr.gated td { opacity: 0.55; }
.gate-panel { display: none; }
.gate-panel td { padding: 8px 16px 16px 48px !important; background: rgba(255, 59, 48, 0.06); }
.gate-reasons {
  font-family: var(--body);
  font-size: 12px;
  color: var(--text-dim);
  overflow-wrap: anywhere;
}

/* Sector pips */
.sector-pips { display: inline-flex; gap: 4px; }
.sector-pip {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  display: inline-block;
}
.sector-pip.hot { background: var(--gt-green); }
.sector-pip.mid { background: var(--gt-amber); }
.sector-pip.cold { background: var(--gt-red); }

/* Skeleton loading */
.skeleton-row td { padding: 16px; }
.skel-bar {
  display: block;
  height: 12px;
  border-radius: 4px;
  background: linear-gradient(90deg, rgba(255,255,255,0.04), rgba(255,255,255,0.1), rgba(255,255,255,0.04));
  background-size: 200% 100%;
  animation: skelPulse 1.2s ease infinite;
}
@keyframes skelPulse {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

/* Pit-stop cards */
.gt-pit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}
.gt-pit-card {
  border-radius: var(--radius);
  border: 1px solid var(--glass-border);
  background: var(--asphalt);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.gt-pit-red { border-top: 4px solid var(--gt1-red); }
.gt-pit-blue { border-top: 4px solid var(--gt1-blue); }
.gt-pit-card .gt-car-icon { width: 100%; height: 32px; margin: 8px 0 0; opacity: 0.85; }
.gt-pit-body { padding: 16px; }
.gt-pit-head { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; flex-wrap: wrap; }
.gt-pit-symbol { font-family: var(--heading); font-size: 1.25rem; }
.gt-pit-plain { font-size: 13px; margin: 0 0 12px; color: var(--text); overflow-wrap: anywhere; }
.gt-pit-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.gt-pit-hold { color: var(--gt-amber); font-size: 12px; font-family: var(--heading); text-transform: uppercase; }
.gt-btn-sm { min-height: 36px; padding: 0 12px; font-size: 10px; }

/* Charts */
.gt-nav-chart-panel canvas,
.gt-row-spark-panel canvas { background: #0a0e14; border-radius: 8px; border: 1px solid var(--glass-border); }
.gt-chart-note { font-size: 12px; color: var(--text-dim); margin: 8px 0 0; }

/* Collection car cards with GT1 liveries */
.gt-car-card.gt-pit-red .gt-car-livery { background: linear-gradient(90deg, var(--gt1-red), #00a3ff); }
.gt-car-card.gt-pit-blue .gt-car-livery { background: linear-gradient(90deg, var(--gt1-blue), #00a3ff); }
.gt-car-card .gt-car-icon { width: calc(100% - 24px); margin: 0 12px; opacity: 0.7; }

.change-row { padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.05); overflow-wrap: anywhere; }

/* Disable hover tooltips that overflow — use click panels instead */
[data-tip]:hover::after { display: none; }

@media (max-width: 768px) {
  .gt-nav {
    position: fixed;
    bottom: 0;
    top: auto;
    left: 0;
    right: 0;
    width: 100%;
    height: 56px;
    flex-direction: row;
    justify-content: space-around;
    padding: 0;
    border-right: none;
    border-top: 1px solid var(--glass-border);
  }
  .gt-nav-logo { display: none; }
  .gt-main { margin-left: 0; margin-bottom: 72px; }
  .gt-nav-label { font-size: 7px; }
  .gt-nav a { width: auto; flex: 1; min-height: 48px; font-size: 14px; }
}