:root {
  --color-bg: #f4f5f7;
  --color-surface: #ffffff;
  --color-border: #e2e4e9;
  --color-text: #1f2430;
  --color-text-muted: #6b7280;
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-danger: #dc2626;
  --color-success: #16a34a;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.navbar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.navbar .brand { font-weight: 700; font-size: 1.05rem; color: var(--color-text); }
.navbar .brand span { color: var(--color-primary); }

.navbar nav { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.navbar nav a { color: var(--color-text-muted); font-size: 0.92rem; }
.navbar nav a.active { color: var(--color-primary); font-weight: 600; }

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

.container-narrow {
  max-width: 480px;
  margin: 60px auto;
  padding: 0 20px;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 20px;
}

.card h1, .card h2 { margin-top: 0; }

h1 { font-size: 1.5rem; }
h2 { font-size: 1.2rem; }
h3 { font-size: 1.02rem; }

.text-muted { color: var(--color-text-muted); }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-weight: 600; font-size: 0.88rem; margin-bottom: 6px; }
.form-group .hint { font-size: 0.8rem; color: var(--color-text-muted); margin-top: 4px; }

input[type=text], input[type=email], input[type=password], input[type=number], input[type=tel], select, textarea {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
  background: #fff;
  color: var(--color-text);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

textarea { resize: vertical; min-height: 70px; }

.btn {
  display: inline-block;
  padding: 9px 16px;
  border-radius: 6px;
  border: 1px solid transparent;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
}

.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); text-decoration: none; }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-danger:hover { opacity: 0.9; text-decoration: none; }
.btn-secondary { background: #fff; border-color: var(--color-border); color: var(--color-text); }
.btn-secondary:hover { background: #f2f3f5; text-decoration: none; }
.btn-sm { padding: 5px 10px; font-size: 0.82rem; }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }

.btn-group { display: flex; gap: 8px; flex-wrap: wrap; }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--color-border); }
th { color: var(--color-text-muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.02em; }
tr:last-child td { border-bottom: none; }
.table-wrap { overflow-x: auto; }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.badge-pendiente { background: #fef3c7; color: #92400e; }
.badge-aprobado { background: #dbeafe; color: #1e40af; }
.badge-cancelado { background: #fee2e2; color: #991b1b; }
.badge-preparando { background: #ede9fe; color: #5b21b6; }
.badge-despachado { background: #dcfce7; color: #166534; }

.flash { padding: 12px 16px; border-radius: 6px; margin-bottom: 16px; font-size: 0.9rem; }
.flash-success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.flash-error { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.flash-info { background: #dbeafe; color: #1e40af; border: 1px solid #bfdbfe; }

.categoria-block { margin-bottom: 24px; }
.categoria-block h3 { border-bottom: 2px solid var(--color-border); padding-bottom: 8px; margin-bottom: 12px; }

.material-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid #f0f1f3;
}
.material-row:last-child { border-bottom: none; }
.material-row .material-info { flex: 1; }
.material-row .material-nombre { font-weight: 500; }
.material-row .material-unidad { color: var(--color-text-muted); font-size: 0.82rem; }
.material-row input[type=number] { width: 100px; text-align: right; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}
.stat-tile {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px;
}
.stat-tile .value { font-size: 1.6rem; font-weight: 700; }
.stat-tile .label { color: var(--color-text-muted); font-size: 0.82rem; margin-top: 4px; }

.bar-row { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; font-size: 0.85rem; }
.bar-row .bar-label { width: 160px; flex-shrink: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-row .bar-track { flex: 1; background: #eef0f3; border-radius: 4px; height: 14px; overflow: hidden; }
.bar-row .bar-fill { background: var(--color-primary); height: 100%; }
.bar-row .bar-value { width: 40px; text-align: right; flex-shrink: 0; }

.empty-state { text-align: center; padding: 40px 20px; color: var(--color-text-muted); }

.login-box { margin-top: 48px; }
.login-box .logo { text-align: center; margin-bottom: 20px; font-weight: 700; font-size: 1.2rem; }

.receipt {
  max-width: 480px;
  margin: 0 auto;
  font-family: "Courier New", monospace;
}
.receipt h2 { text-align: center; }
.receipt table { font-size: 0.85rem; }

@media print {
  .no-print { display: none !important; }
  body { background: #fff; }
  .container { padding: 0; max-width: 100%; }
}