:root {
  --bg: #0b0f14;
  --surface: #121821;
  --surface-2: #1a2230;
  --border: #243044;
  --text: #e6edf3;
  --muted: #8b97a8;
  --accent: #e10600;        /* motorsport red */
  --accent-hover: #c40500;
  --success: #2ecc71;
  --warning: #f1c40f;
  --danger: #ff4d4f;
  --info: #3aa0ff;
  --radius: 10px;
  --shadow: 0 6px 24px rgba(0,0,0,0.35);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  min-height: 100vh;
}

body {
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.5px;
}
.brand-mark {
  background: var(--accent);
  color: #fff;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.85rem;
}
.nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.nav-user { color: var(--muted); }
.logout-form { margin: 0; }

/* Main */
.main-content {
  flex: 1;
  padding: 2rem 1.25rem 3rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  padding: 1rem 0;
  text-align: center;
}

/* Auth */
.auth-card {
  max-width: 420px;
  margin: 3rem auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
}
.auth-card h1 { margin: 0 0 0.25rem; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }

.field { margin-bottom: 1rem; }
.field label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.9rem;
  color: var(--muted);
}
.field-inline {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.field-inline label { margin: 0; }

.input {
  width: 100%;
  padding: 0.7rem 0.85rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.15s;
}
.input:focus { border-color: var(--accent); }

/* Buttons */
.btn {
  display: inline-block;
  border: 1px solid transparent;
  background: var(--surface-2);
  color: var(--text);
  padding: 0.6rem 1rem;
  border-radius: 8px;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.btn:hover:not(:disabled) { background: #233044; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}
.btn-ghost { background: transparent; border-color: var(--border); }
.btn-block { width: 100%; }
.btn-inline-link {
  background: none; border: none; padding: 0; cursor: pointer;
  color: inherit; text-decoration: underline; font: inherit;
}

/* Flash messages */
.flash-stack { margin-bottom: 1.25rem; display: grid; gap: 0.5rem; }
.flash {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
}
.flash-success { border-color: var(--success); }
.flash-danger  { border-color: var(--danger); }
.flash-warning { border-color: var(--warning); }
.flash-info    { border-color: var(--info); }

/* Dashboard */
.hero {
  padding: 2rem 0 1rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
}
.hero h1 { margin: 0 0 0.25rem; }
.hero-sub { margin: 0; color: var(--text); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.card h2 { margin-top: 0; font-size: 1.1rem; }
.meta {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.35rem;
  color: var(--muted);
}
.meta strong { color: var(--text); margin-right: 0.25rem; }

/* Page head */
.page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.page-head h1 { margin: 0 0 0.15rem; }
.page-head p { margin: 0; }

/* Nav link */
.nav-link {
  color: var(--text);
  text-decoration: none;
  padding: 0.4rem 0.7rem;
  border-radius: 6px;
}
.nav-link:hover { background: var(--surface-2); }

/* Tables */
.table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: auto;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
.data-table th,
.data-table td {
  padding: 0.7rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.data-table thead th {
  background: var(--surface-2);
  color: var(--muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.data-table tbody tr:last-child td { border-bottom: 0; }
.cell-fastest {
  background: rgba(124, 58, 237, 0.25);
  color: #c4b5fd;
  font-weight: 600;
}
.actions-col { width: 1%; white-space: nowrap; }
.actions { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.inline-form { display: inline; margin: 0; }

.btn-sm { padding: 0.35rem 0.6rem; font-size: 0.85rem; }
.btn-danger {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}
.btn-danger:hover:not(:disabled) { background: #d93638; border-color: #d93638; }

/* Tags */
.tag {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  font-size: 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--muted);
  text-transform: lowercase;
  letter-spacing: 0.02em;
}
.tag-admin    { color: #fff; background: var(--accent); border-color: var(--accent); }
.tag-user     { color: var(--text); }
.tag-active   { color: var(--success); border-color: var(--success); }
.tag-inactive { color: var(--danger);  border-color: var(--danger); }
.tag-you      { color: var(--info);    border-color: var(--info); margin-left: 0.25rem; }
.tag-exempt   { color: #c4b5fd; border-color: #7c3aed; background: rgba(124,58,237,0.18); }

/* Forms */
.form-card {
  max-width: 560px;
  margin: 1rem auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
  box-shadow: var(--shadow);
}
.form-card h1 { margin: 0.5rem 0 0.25rem; }
.back-link {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
}
.back-link:hover { color: var(--text); }
.form-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
}
.err {
  display: block;
  margin-top: 0.25rem;
  color: var(--danger);
  font-size: 0.85rem;
}

.hint {
  display: block;
  margin-top: 0.3rem;
  color: var(--muted);
  font-size: 0.8rem;
}
.hint a { color: var(--info); }

.input-multi { min-height: 7.5rem; padding: 0.5rem; }

.head-actions { display: flex; gap: 0.5rem; }

/* Chips */
.chip-row { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.chip-row-lg { margin-top: 0.5rem; }
.chip {
  display: inline-block;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 0.8rem;
}

.upload-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}


/* ---- Review / ingest extras ---- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 1rem 0; }
.form-grid .card-wide { grid-column: 1 / -1; }
.form-grid label { display: block; font-size: 0.85rem; color: var(--muted, #9aa); margin-bottom: 0.7rem; }
.form-grid label input, .form-grid label select {
  display: block; width: 100%; margin-top: 0.25rem;
  background: #14181f; color: #eee; border: 1px solid #2a2f38;
  padding: 0.5rem 0.6rem; border-radius: 6px;
}
.meta-list { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 0.4rem 1rem; margin: 0.4rem 0 0; padding: 0; }
.meta-list > div { display: flex; justify-content: space-between; gap: 0.6rem; font-size: 0.85rem; }
.meta-list dt { color: #8b91a0; }
.meta-list dd { margin: 0; color: #ddd; }
.badge { display: inline-block; padding: 1px 6px; border-radius: 999px; font-size: 0.72rem; font-weight: 600; }
.badge-ok { background: #163d2a; color: #6ddc9d; }
.badge-warn { background: #3d3416; color: #e9c870; }
.badge-bad { background: #3d1616; color: #ef7676; }
.badge-fast { background: #3a2a09; color: #ffd166; margin-left: 4px; }
.badge-record { background: #122a3a; color: #6cb8ff; margin-left: 4px; }
.alert { padding: 0.7rem 0.9rem; border-radius: 8px; margin: 1rem 0; border: 1px solid; }
.alert-warning { background: #2a2210; color: #f1c46a; border-color: #5b4310; }
@media (max-width: 800px) { .form-grid { grid-template-columns: 1fr; } }

/* ---- Review / ingest extras ---- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 1rem 0; }
.form-grid .card-wide { grid-column: 1 / -1; }
.form-grid label { display: block; font-size: 0.85rem; color: #9aa; margin-bottom: 0.7rem; }
.form-grid label input, .form-grid label select { display: block; width: 100%; margin-top: 0.25rem; background: #14181f; color: #eee; border: 1px solid #2a2f38; padding: 0.5rem 0.6rem; border-radius: 6px; }
.meta-list { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 0.4rem 1rem; margin: 0.4rem 0 0; padding: 0; }
.meta-list > div { display: flex; justify-content: space-between; gap: 0.6rem; font-size: 0.85rem; }
.meta-list dt { color: #8b91a0; }
.meta-list dd { margin: 0; color: #ddd; }
.badge { display: inline-block; padding: 1px 6px; border-radius: 999px; font-size: 0.72rem; font-weight: 600; }
.badge-ok { background: #163d2a; color: #6ddc9d; }
.badge-warn { background: #3d3416; color: #e9c870; }
.badge-bad { background: #3d1616; color: #ef7676; }
.badge-fast { background: #3a2a09; color: #ffd166; margin-left: 4px; }
.badge-record { background: #122a3a; color: #6cb8ff; margin-left: 4px; }
.alert { padding: 0.7rem 0.9rem; border-radius: 8px; margin: 1rem 0; border: 1px solid; }
.alert-warning { background: #2a2210; color: #f1c46a; border-color: #5b4310; }
@media (max-width: 800px) { .form-grid { grid-template-columns: 1fr; } }


/* ---- Review / ingest extras ---- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 1rem 0; }
.form-grid .card-wide { grid-column: 1 / -1; }
.form-grid label { display: block; font-size: 0.85rem; color: #9aa; margin-bottom: 0.7rem; }
.form-grid label input, .form-grid label select { display: block; width: 100%; margin-top: 0.25rem; background: #14181f; color: #eee; border: 1px solid #2a2f38; padding: 0.5rem 0.6rem; border-radius: 6px; }
.meta-list { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 0.4rem 1rem; margin: 0.4rem 0 0; padding: 0; }
.meta-list > div { display: flex; justify-content: space-between; gap: 0.6rem; font-size: 0.85rem; }
.meta-list dt { color: #8b91a0; }
.meta-list dd { margin: 0; color: #ddd; }
.badge { display: inline-block; padding: 1px 6px; border-radius: 999px; font-size: 0.72rem; font-weight: 600; }
.badge-ok { background: #163d2a; color: #6ddc9d; }
.badge-warn { background: #3d3416; color: #e9c870; }
.badge-bad { background: #3d1616; color: #ef7676; }
.badge-fast { background: #3a2a09; color: #ffd166; margin-left: 4px; }
.badge-record { background: #122a3a; color: #6cb8ff; margin-left: 4px; }
.alert { padding: 0.7rem 0.9rem; border-radius: 8px; margin: 1rem 0; border: 1px solid; }
.alert-warning { background: #2a2210; color: #f1c46a; border-color: #5b4310; }
@media (max-width: 800px) { .form-grid { grid-template-columns: 1fr; } }


/* ---- Drivers of interest ---- */
.color-row { display: inline-flex; align-items: center; gap: 0.5rem; margin-top: 0.25rem; }
.color-swatch { width: 2.4rem; height: 2.4rem; padding: 0; border: 1px solid #2a2f38; border-radius: 6px; background: transparent; cursor: pointer; }
.color-chip { display: inline-block; width: 1rem; height: 1rem; border-radius: 50%; border: 1px solid #00000033; vertical-align: -2px; margin-right: 0.3rem; }
.btn-danger { background: #5a1d1d; color: #ffb3b3; border-color: #7a2a2a; }
.btn-danger:hover { background: #7a2a2a; }


/* ---- Analytics: filter bar + driver-of-interest highlight ---- */
.filter-bar { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; align-items: end; margin-bottom: 1.25rem; }
.filter-bar label { display: flex; flex-direction: column; gap: 0.3rem; font-size: 0.9rem; color: #c9d1d9; }
.filter-bar select { padding: 0.5rem; border-radius: 6px; border: 1px solid #2a2f38; background: #0f1218; color: #e6edf3; }
.filter-bar select:disabled { opacity: 0.5; }
.session-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; flex-wrap: wrap; margin-bottom: 0.75rem; }
.meta-pills { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.pill { background: #1c2330; border: 1px solid #2a2f38; border-radius: 999px; padding: 0.15rem 0.7rem; font-size: 0.8rem; color: #c9d1d9; }
.row-doi { box-shadow: inset 4px 0 0 0 var(--doi-color, transparent); background: color-mix(in srgb, var(--doi-color, transparent) 8%, transparent); }


/* ---- Plots ---- */
.checkbox-label { flex-direction: row !important; align-items: center; gap: 0.5rem; }
.checkbox-label input[type=checkbox] { width: 1.05rem; height: 1.05rem; accent-color: #4cc9f0; }


/* ---- Sub-navigation (Analysis tabs) ---- */
.subnav { display: flex; gap: 0.25rem; border-bottom: 1px solid #2a2f38; margin: 0 0 1.25rem 0; flex-wrap: wrap; }
.subnav-link { padding: 0.55rem 1rem; color: #c9d1d9; text-decoration: none; border-bottom: 2px solid transparent; font-size: 0.95rem; margin-bottom: -1px; transition: color 0.15s, border-color 0.15s; }
.subnav-link:hover { color: #e6edf3; border-bottom-color: #444c56; }
.subnav-link.is-active { color: #4cc9f0; border-bottom-color: #4cc9f0; font-weight: 600; }

/* ---- Sector ranking table ---- */
.sector-table th { text-align: left; }
.sector-table td.num, .sector-table th[colspan] { text-align: left; }
.sector-table .car-num { color: #8b91a0; font-variant-numeric: tabular-nums; margin-right: 0.15rem; }
.sector-table .sector-driver { white-space: nowrap; }
.sector-table .cell-doi { box-shadow: inset 3px 0 0 0 var(--doi-color, transparent); background: color-mix(in srgb, var(--doi-color, transparent) 12%, transparent); font-weight: 600; }

.sector-toolbar { display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; margin: 0; }
.sector-toolbar .checkbox-label { font-size: 0.85rem; color: #c9d1d9; margin: 0; }

.rising-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
.rising-cell { height: 360px; min-width: 0; }
@media (max-width: 900px) { .rising-grid { grid-template-columns: 1fr; } }