*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:       #0f1117;
  --surface:  #1a1d27;
  --border:   #2a2d3a;
  --text:     #e2e4ed;
  --muted:    #7a7d8e;
  --accent:   #4f7cff;
  --warn:     #f0a030;
  --ok:       #40c080;
  --danger:   #e05555;
  --radius:   8px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
}

/* ── Nav ── */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 56px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.nav-brand { font-weight: 600; font-size: 1rem; color: var(--accent); }
.nav-links a { color: var(--muted); text-decoration: none; margin-left: 1.5rem; font-size: 0.9rem; }
.nav-links a:hover { color: var(--text); }
.nav-logout { color: var(--danger) !important; }

/* ── Main ── */
main { max-width: 1100px; margin: 0 auto; padding: 2rem 1.5rem; }

/* ── Login ── */
.login-wrap {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
}
.login-box {
  width: 100%; max-width: 380px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
}
.login-box h1 { font-size: 1.4rem; margin-bottom: 1.5rem; }
.login-box label {
  display: block; font-size: 0.85rem; color: var(--muted);
  margin-bottom: 0.3rem; margin-top: 1rem;
}
.login-box input {
  width: 100%; padding: 0.6rem 0.8rem;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 6px; color: var(--text); font-size: 1rem;
  outline: none;
}
.login-box input:focus { border-color: var(--accent); }
.login-box button {
  width: 100%; margin-top: 1.5rem; padding: 0.7rem;
  background: var(--accent); color: #fff;
  border: none; border-radius: 6px;
  font-size: 1rem; font-weight: 600; cursor: pointer;
}
.login-box button:hover { opacity: 0.9; }

/* ── Alerts ── */
.alert { padding: 0.75rem 1rem; border-radius: 6px; font-size: 0.9rem; margin-bottom: 1rem; }
.alert-error { background: rgba(224,85,85,.15); border: 1px solid var(--danger); color: #f08080; }

/* ── Page header ── */
.page-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  margin-bottom: 2rem;
}
.page-header h1 { font-size: 1.6rem; }
.back-link { color: var(--muted); text-decoration: none; font-size: 0.9rem; display: block; margin-bottom: 0.3rem; }
.back-link:hover { color: var(--text); }
.btn-export {
  padding: 0.5rem 1.2rem; background: var(--surface);
  border: 1px solid var(--border); border-radius: 6px;
  color: var(--text); text-decoration: none; font-size: 0.9rem;
  white-space: nowrap;
}
.btn-export:hover { border-color: var(--accent); color: var(--accent); }

/* ── Project grid ── */
.project-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
.project-card {
  display: flex; align-items: center; gap: 1rem;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.25rem 1.5rem;
  text-decoration: none; color: var(--text);
  transition: border-color .15s;
}
.project-card:hover { border-color: var(--accent); }
.project-icon { font-size: 2rem; }
.project-info { flex: 1; }
.project-info h2 { font-size: 1.1rem; margin-bottom: 0.2rem; }
.project-info p { color: var(--muted); font-size: 0.85rem; }
.project-meta { margin-top: 0.5rem; font-size: 0.8rem; color: var(--muted); display: flex; gap: 0.4rem; flex-wrap: wrap; }
.project-arrow { color: var(--muted); font-size: 1.2rem; }

/* ── Section ── */
.section { margin-bottom: 3rem; }
.section h2 { font-size: 1.2rem; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--border); }
.section h3 { font-size: 1rem; color: var(--muted); margin: 1.5rem 0 0.5rem; }

/* ── Tables ── */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
thead { background: var(--surface); }
th { padding: 0.6rem 0.8rem; text-align: left; color: var(--muted); font-weight: 500; white-space: nowrap; }
td { padding: 0.5rem 0.8rem; border-top: 1px solid var(--border); }
tbody tr:hover { background: rgba(255,255,255,.02); }
.slot { color: var(--muted); font-size: 0.8rem; }

/* Heat colours (car duration) */
.heat-0 { color: var(--ok); }
.heat-1 { color: #80d060; }
.heat-2 { color: #c0c040; }
.heat-3 { color: var(--warn); }
.heat-4 { color: var(--danger); }

/* ── RER cards ── */
.rer-cards { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.rer-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.25rem;
}
.rer-canal { font-weight: 600; margin-bottom: 0.75rem; color: var(--accent); }
.rer-row { display: flex; justify-content: space-between; font-size: 0.875rem; padding: 0.25rem 0; }
.rer-row span { color: var(--muted); }

/* ── Chart ── */
.chart-container { position: relative; height: 300px; margin: 1rem 0 2rem; }

/* ── KPI cards (voiture) ── */
.kpi-cards { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); margin-bottom: 1.5rem; }
.kpi-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.25rem; }
.kpi-label { font-size: 0.8rem; color: var(--muted); margin-bottom: 0.25rem; }
.kpi-value { font-size: 1.4rem; font-weight: 700; }
.kpi-sub   { font-size: 0.75rem; color: var(--muted); margin-top: 0.2rem; }

/* Utilities */
.text-ok   { color: var(--ok); }
.text-warn { color: var(--warn); }
.empty { color: var(--muted); font-style: italic; padding: 1rem 0; }