:root {
  --bg-body: #0f172a;
  --bg-card: #1e293b;
  --bg-input: #334155;
  --bg-input-focus: #475569;
  --border-color: #334155;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-glow: rgba(59, 130, 246, 0.25);

  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.15);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.15);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.15);

  --tag-caf: #38bdf8;
  --tag-alstom: #c084fc;

  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --radius: 8px;
  --transition: all 0.2s ease-in-out;
}

[data-theme="light"] {
  --bg-body: #f1f5f9;
  --bg-card: #ffffff;
  --bg-input: #f8fafc;
  --bg-input-focus: #ffffff;
  --border-color: #cbd5e1;
  --text-main: #0f172a;
  --text-muted: #64748b;

  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-glow: rgba(37, 99, 235, 0.15);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-body);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.app-header {
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-brand { display: flex; align-items: center; gap: 0.75rem; }
.logo-badge {
  background: linear-gradient(135deg, var(--primary), #6366f1);
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
}
.header-brand h1 { font-size: 1.2rem; font-weight: 700; }
.subtitle { font-size: 0.8rem; color: var(--text-muted); }

.header-actions { display: flex; align-items: center; gap: 0.75rem; }
.select-group { display: flex; align-items: center; gap: 0.4rem; font-size: 0.85rem; color: var(--text-muted); }
.input-select-sm {
  background-color: var(--bg-input);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 0.35rem 0.6rem;
  font-weight: 600;
}

.btn-icon {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 0.4rem 0.65rem;
  cursor: pointer;
  display: flex;
}

.app-container {
  max-width: 1200px;
  width: 100%;
  margin: 1.5rem auto;
  padding: 0 1rem;
  flex: 1;
}

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  margin-bottom: 1.5rem;
}

.card-header {
  margin-bottom: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
}
.card-header-clean { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.5rem; }
.card-header h2, .card-header h3 { font-size: 1.15rem; font-weight: 600; }
.card-header p { font-size: 0.85rem; color: var(--text-muted); margin-top: 0.2rem; }

.login-card { max-width: 440px; margin: 4rem auto; }
.dashboard-grid { display: grid; grid-template-columns: 380px 1fr; gap: 1.5rem; }
@media (max-width: 860px) { .dashboard-grid { grid-template-columns: 1fr; } }

.dashboard-right { display: flex; flex-direction: column; gap: 1rem; }

/* RÈGLE DES 3 MOIS */
.rule-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  border-left: 4px solid var(--border-color);
}
.rule-card.ok { border-left-color: var(--success); }
.rule-card.warn { border-left-color: var(--warning); background-color: var(--warning-bg); }
.rule-card.alert { border-left-color: var(--danger); background-color: var(--danger-bg); }
.rule-icon { font-size: 1.8rem; }
.rule-details { flex: 1; }
.rule-title { font-weight: 700; font-size: 0.9rem; }
.rule-dates { font-size: 0.85rem; color: var(--text-muted); margin-top: 0.2rem; }

/* TRAJECTOIRE ANNUELLE */
.trajectory-card { padding: 1rem; }
.traj-title { font-weight: 600; font-size: 0.85rem; color: var(--text-muted); }
.traj-bars-wrapper { display: flex; flex-direction: column; gap: 0.5rem; }
.traj-legend { display: flex; justify-content: space-between; font-size: 0.85rem; }
.timeline-container {
  position: relative;
  height: 12px;
  background-color: var(--bg-input);
  border-radius: 6px;
  overflow: visible;
}
.timeline-bar-real {
  height: 100%;
  background-color: var(--primary);
  border-radius: 6px;
  transition: width 0.4s ease;
}
.timeline-marker {
  position: absolute;
  top: -4px;
  width: 4px;
  height: 20px;
  background-color: var(--warning);
  border-radius: 2px;
  box-shadow: 0 0 4px rgba(0,0,0,0.5);
}

/* KPI */
.kpi-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.kpi-card { display: flex; flex-direction: column; gap: 0.4rem; padding: 1rem; }
.kpi-header { display: flex; justify-content: space-between; align-items: center; }
.kpi-value { font-size: 1.8rem; font-weight: 800; }
.progress-bar-container { height: 6px; background-color: var(--bg-input); border-radius: 3px; overflow: hidden; }
.progress-bar { height: 100%; background-color: var(--primary); transition: width 0.4s ease; }
.progress-bar.completed { background-color: var(--success); }
.kpi-footer { display: flex; justify-content: space-between; font-size: 0.8rem; color: var(--text-muted); }

/* FORMULAIRES */
.form-flow { display: flex; flex-direction: column; gap: 0.85rem; }
.form-group { display: flex; flex-direction: column; gap: 0.35rem; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--text-muted); }
.form-row { display: flex; gap: 0.75rem; }
.flex-1 { flex: 1; }
.input-field {
  width: 100%;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-main);
  padding: 0.6rem 0.8rem;
  font-size: 0.95rem;
  outline: none;
}
.input-field:focus { border-color: var(--primary); }
.pin-field { letter-spacing: 0.5rem; font-size: 1.3rem; text-align: center; font-weight: 700; }

.duration-preview {
  display: flex; justify-content: space-between; align-items: center;
  background-color: var(--bg-input);
  border: 1px dashed var(--border-color);
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius);
}
.duration-preview strong { color: var(--primary); font-size: 1.1rem; }

/* BOUTONS & STATUS */
.btn-primary {
  background-color: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 0.7rem 1rem;
  font-weight: 600;
  cursor: pointer;
}
.btn-primary:hover { background-color: var(--primary-hover); }
.btn-secondary {
  background-color: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 0.5rem 0.8rem;
  cursor: pointer;
}
.btn-danger-sm {
  background-color: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
  border-radius: var(--radius);
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  cursor: pointer;
}
.btn-danger-sm:hover { background-color: var(--danger-bg); }
.btn-sm { font-size: 0.8rem; padding: 0.35rem 0.6rem; }
.btn-block { width: 100%; }

.status-pill {
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
}
.pill-ok { background-color: var(--success-bg); color: var(--success); }
.pill-warn { background-color: var(--warning-bg); color: var(--warning); }
.pill-alert { background-color: var(--danger-bg); color: var(--danger); }

.tram-tag { font-size: 0.75rem; font-weight: 700; padding: 0.2rem 0.5rem; border-radius: 4px; }
.tag-caf { background-color: rgba(56, 189, 248, 0.2); color: var(--tag-caf); }
.tag-alstom { background-color: rgba(192, 132, 252, 0.2); color: var(--tag-alstom); }

/* TABLEAUX & CAMEMBERTS */
.table-responsive { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; text-align: left; }
.data-table th, .data-table td { padding: 0.65rem 0.85rem; border-bottom: 1px solid var(--border-color); }
.data-table th { background-color: var(--bg-input); color: var(--text-muted); font-weight: 600; }

.donut-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}
.donut-svg { transform: rotate(-90deg); }
.donut-text { font-size: 0.8rem; font-weight: 700; }

/* MODAL & ADMIN */
.modal-overlay {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0, 0, 0, 0.75);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
}
.modal-card { max-width: 420px; width: 90%; margin: 0; }
.cadre-header-action { display: flex; justify-content: space-between; align-items: center; }
.admin-quick-add {
  background-color: var(--bg-input);
  padding: 0.75rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
}
.quick-add-form { display: flex; gap: 0.5rem; }

.hidden { display: none !important; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.alert-error {
  background-color: var(--danger-bg);
  color: var(--danger);
  border: 1px solid var(--danger);
  padding: 0.6rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
  text-align: center;
}