:root {
  --rojo: #c81324;
  --rojo-oscuro: #97101c;
  --negro: #14151a;
  --gris-oscuro: #23252c;
  --gris: #6b7280;
  --gris-claro: #f3f4f6;
  --borde: #e5e7eb;
  --texto: #1f2430;
  --verde: #1f9d55;
  --amarillo: #b7791f;
  --sombra: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--gris-claro);
  color: var(--texto);
}

a { color: inherit; text-decoration: none; }

.app {
  display: flex;
  min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
  width: 220px;
  background: linear-gradient(180deg, var(--negro), var(--gris-oscuro));
  color: #fff;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.sidebar .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 18px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.sidebar .brand img { width: 40px; height: 40px; object-fit: contain; border-radius: 6px; background: #000;}
.sidebar .brand span { font-weight: 700; font-size: 15px; letter-spacing: 0.3px; }

.sidebar nav { flex: 1; padding: 10px 8px; }
.sidebar nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  margin: 2px 0;
  border-radius: 8px;
  color: rgba(255,255,255,0.75);
  font-size: 14px;
  font-weight: 500;
}
.sidebar nav a:hover { background: rgba(255,255,255,0.06); color: #fff; }
.sidebar nav a.active { background: var(--rojo); color: #fff; }

.sidebar .user-box {
  padding: 14px 16px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 13px;
}
.sidebar .user-box .rol { color: rgba(255,255,255,0.5); text-transform: uppercase; font-size: 11px; letter-spacing: 0.5px;}
.sidebar .user-box form { margin-top: 8px; }
.sidebar .user-box button {
  background: none; border: 1px solid rgba(255,255,255,0.2); color: #fff;
  padding: 6px 10px; border-radius: 6px; font-size: 12px; cursor: pointer; width: 100%;
}
.sidebar .user-box button:hover { background: rgba(255,255,255,0.1); }

/* --- Main --- */
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.topbar {
  background: #fff;
  border-bottom: 1px solid var(--borde);
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.topbar h1 { font-size: 19px; margin: 0; font-weight: 700; }
.content { padding: 24px 28px; flex: 1; }

/* --- Componentes --- */
.card {
  background: #fff;
  border: 1px solid var(--borde);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--sombra);
}
.grid { display: grid; gap: 16px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } .grid-2 { grid-template-columns: 1fr; } }

.stat { padding: 18px; border-radius: 12px; background: #fff; border: 1px solid var(--borde); box-shadow: var(--sombra); }
.stat .label { color: var(--gris); font-size: 12.5px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.3px; }
.stat .value { font-size: 26px; font-weight: 800; margin-top: 6px; }
.stat.accent { border-left: 4px solid var(--rojo); }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--rojo); color: #fff; border: none;
  padding: 9px 16px; border-radius: 8px; font-size: 14px; font-weight: 600;
  cursor: pointer;
}
.btn:hover { background: var(--rojo-oscuro); }
.btn.secondary { background: #fff; color: var(--texto); border: 1px solid var(--borde); }
.btn.secondary:hover { background: var(--gris-claro); }
.btn.small { padding: 6px 10px; font-size: 12.5px; }
.btn.danger { background: #fff; color: #b91c1c; border: 1px solid #fecaca; }
.btn.danger:hover { background: #fef2f2; }
.btn.ghost { background: transparent; color: var(--rojo); border: 1px solid transparent; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
thead th {
  text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: 0.4px;
  color: var(--gris); padding: 10px 12px; border-bottom: 1px solid var(--borde);
}
tbody td { padding: 12px; border-bottom: 1px solid var(--borde); vertical-align: middle; }
tbody tr:hover { background: #fafafa; }

.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.pendiente { background: #fef3c7; color: #92400e; }
.badge.en_proceso { background: #dbeafe; color: #1e40af; }
.badge.pagada { background: #dcfce7; color: #166534; }
.badge.rechazada { background: #fee2e2; color: #991b1b; }
.badge.enviada { background: #ede9fe; color: #5b21b6; }
.badge.stock-bajo { background: #fee2e2; color: #991b1b; }
.badge.admin { background: #ede9fe; color: #5b21b6; }
.badge.mecanico { background: #e0f2fe; color: #075985; }
.badge.tipo-vehiculo { background: #f3f4f6; color: #374151; }

.form-row { margin-bottom: 14px; }
.form-row label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 5px; color: #374151; }
input, select, textarea {
  width: 100%; padding: 9px 11px; border: 1px solid var(--borde); border-radius: 8px;
  font-size: 14px; font-family: inherit; background: #fff; color: var(--texto);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--rojo); outline-offset: 0; border-color: var(--rojo); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
@media (max-width: 700px) { .form-grid { grid-template-columns: 1fr; } }

.toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; gap: 12px; flex-wrap: wrap; }
.search-box { display: flex; gap: 8px; flex: 1; max-width: 420px; }

.alert { padding: 12px 16px; border-radius: 8px; font-size: 14px; margin-bottom: 16px; }
.alert.ok { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.alert.error { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }

.section-title { font-size: 13px; font-weight: 700; text-transform: uppercase; color: var(--rojo); letter-spacing: 0.4px; margin: 22px 0 10px; }
.muted { color: var(--gris); }

.items-table input { padding: 7px 9px; font-size: 13.5px; }
.items-table td { padding: 6px; }
.items-table th { padding: 8px 6px; }

.login-page {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: radial-gradient(circle at top, #23252c, #0c0d10);
}
.login-card {
  background: #fff; border-radius: 16px; padding: 36px 32px; width: 380px; box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  text-align: center;
}
.login-card img { width: 90px; height: 90px; object-fit: contain; margin-bottom: 8px; border-radius: 14px; background: #0c0d10; padding: 4px; }
.login-card h2 { margin: 6px 0 4px; font-size: 18px; }
.login-card p.sub { color: var(--gris); font-size: 13px; margin-bottom: 22px; }
.login-card form { text-align: left; }
.login-card .btn { width: 100%; justify-content: center; margin-top: 6px; padding: 11px; }

.empty-state { text-align: center; padding: 50px 20px; color: var(--gris); }
.empty-state .btn { margin-top: 12px; }

.detail-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 20px; }
@media (max-width: 900px) { .detail-grid { grid-template-columns: 1fr; } }
.kv { display: flex; justify-content: space-between; padding: 7px 0; border-bottom: 1px dashed var(--borde); font-size: 14px; }
.kv .k { color: var(--gris); }
.kv .v { font-weight: 600; text-align: right; }

.totales { margin-top: 10px; }
.totales .kv .v { font-size: 15px; }
.totales .total-final { font-size: 20px; color: var(--rojo); font-weight: 800; }