/* ============================================
   Facturación Marva - Sistema de diseño
   ============================================ */

:root {
  --color-primary: #0d6efd;
  --color-primary-dark: #0a58ca;
  --color-accent: #198754;
  --color-danger: #dc3545;
  --color-warning: #fd7e14;
  --color-bg: #f8f9fa;
  --color-surface: #ffffff;
  --color-text: #212529;
  --color-text-muted: #6c757d;
  --color-border: #dee2e6;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.1);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* { box-sizing: border-box; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
}

/* --- Layout principal --- */
.app-container {
  flex: 1;
  padding-bottom: 2rem;
}

/* --- Navbar mejorada --- */
.navbar-marva {
  background: linear-gradient(135deg, #1a1d29 0%, #2d3142 100%) !important;
  box-shadow: var(--shadow-md);
  padding: 0.5rem 0;
}

.navbar-marva .navbar-brand img {
  filter: brightness(1.05);
  transition: opacity 0.2s;
}

.navbar-marva .navbar-brand:hover img {
  opacity: 0.9;
}

.navbar-marva .btn-outline-light {
  border-radius: var(--radius-sm);
  padding: 0.4rem 1rem;
  font-weight: 500;
  transition: all 0.2s;
}

.navbar-marva .btn-outline-light:hover {
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.5);
  transform: translateY(-1px);
}

/* --- Login --- */
.login-wrapper {
  min-height: calc(100vh - 200px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  background: linear-gradient(145deg, #e8ecf1 0%, #f0f4f8 50%, #e2e8f0 100%);
}

.login-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 2.5rem;
  width: 100%;
  max-width: 420px;
  border: 1px solid rgba(0,0,0,0.05);
}

.login-card h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.login-card .subtitle {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.75rem;
}

.login-card .form-control {
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--color-border);
}

.login-card .form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.15);
}

.login-card .btn-primary {
  padding: 0.65rem 1.25rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.login-card .btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(13, 110, 253, 0.35);
}

/* --- Páginas admin: encabezados --- */
.page-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0;
  color: var(--color-text);
}

/* --- Cards --- */
.card-marva {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.card-marva .card-body {
  padding: 1.5rem;
}

/* --- Dashboard: enlaces como tarjetas --- */
.dash-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}

.dash-card {
  display: block;
  padding: 1.5rem;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  text-decoration: none;
  color: var(--color-text);
  transition: all 0.25s;
  box-shadow: var(--shadow-sm);
}

.dash-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.dash-card .icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  opacity: 0.8;
}

.dash-card .title {
  font-weight: 600;
  font-size: 1.1rem;
}

.dash-card .desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

/* --- Tablas --- */
.table-marva {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.table-marva thead th {
  background: #f1f3f5;
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

.table-marva tbody td {
  padding: 0.85rem 1rem;
  vertical-align: middle;
}

.table-marva tbody tr {
  transition: background 0.15s;
}

.table-marva tbody tr:hover {
  background: #f8f9fa;
}

.table-marva .btn-sm {
  border-radius: var(--radius-sm);
  padding: 0.3rem 0.6rem;
  font-size: 0.8rem;
}

/* --- Botones --- */
.btn-primary {
  border-radius: var(--radius-sm);
  font-weight: 500;
}

.btn-outline-primary, .btn-outline-secondary, .btn-outline-danger {
  border-radius: var(--radius-sm);
}

/* --- Alerts --- */
.alert {
  border-radius: var(--radius-sm);
  border: none;
}

.alert-danger {
  background: #fff5f5;
  color: #c92a2a;
}

.alert-success {
  background: #f0f9f4;
  color: #2b8a3e;
}

.alert-warning {
  background: #fff9db;
  color: #e67700;
}

/* --- Forms --- */
.form-label {
  font-weight: 500;
  color: var(--color-text);
}

.form-control, .form-select {
  border-radius: var(--radius-sm);
}

/* --- Footer --- */
.footer-marva {
  margin-top: auto;
  padding: 1.25rem 0;
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.footer-marva a {
  color: var(--color-primary);
  text-decoration: none;
}

.footer-marva a:hover {
  text-decoration: underline;
}

/* --- Badge ENV (solo desarrollo) --- */
.badge-env {
  font-size: 0.7rem;
  font-weight: 500;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .login-card { padding: 1.75rem; }
  .page-header { flex-direction: column; align-items: flex-start; }
  .dash-cards { grid-template-columns: 1fr; }
}