:root {
  --brand-red: #E4362E;
  --brand-orange: #F2952B;
  --brand-green: #8CC63F;
  --brand-blue: #1E5AA8;
  --bg-page: #F4F5F7;
  --bg-card: #FFFFFF;
  --border: #E2E4E9;
  --text-primary: #1F2430;
  --text-secondary: #6B7280;
  --sidebar-w: 220px;
  --success-bg: #E6F6E9;
  --success-text: #1E7B34;
  --warning-bg: #FDF1DD;
  --warning-text: #93600B;
  --neutral-bg: #EEF0F3;
  --neutral-text: #6B7280;
  --danger-bg: #FBE7E6;
  --danger-text: #A82A22;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg-page);
  color: var(--text-primary);
}

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

.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 20;
  transition: transform 0.25s ease;
}

.sidebar-brand { padding: 1.25rem 1rem; border-bottom: 1px solid var(--border); }
.sidebar-brand img { max-width: 100%; height: auto; display: block; }

.sidebar-nav { display: flex; flex-direction: column; padding: 0.75rem 0; flex: 1; }
.sidebar-nav a {
  padding: 0.65rem 1.25rem;
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  border-left: 3px solid transparent;
}
.sidebar-nav a:hover { background: var(--bg-page); }
.sidebar-nav a.active {
  color: var(--brand-blue);
  border-left-color: var(--brand-blue);
  background: var(--bg-page);
  font-weight: 600;
}

.sidebar-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border);
  font-size: 13px;
}
.usuario-actual { color: var(--text-secondary); margin-bottom: 6px; }
.logout-link { color: var(--danger-text); text-decoration: none; font-weight: 600; }

.content {
  margin-left: var(--sidebar-w);
  padding: 1.5rem 2rem;
  width: 100%;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.page-header h1 { font-size: 22px; margin: 0; }

.btn {
  display: inline-block;
  padding: 0.55rem 1rem;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border);
  cursor: pointer;
}
.btn-primary { background: var(--brand-blue); color: #fff; border-color: var(--brand-blue); }
.btn-secondary { background: var(--bg-card); color: var(--text-primary); }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 1.5rem;
}
.stat-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 1rem; }
.stat-label { font-size: 13px; color: var(--text-secondary); margin: 0 0 6px; }
.stat-value { font-size: 24px; font-weight: 700; margin: 0; }
.stat-success { color: var(--success-text); }
.stat-warning { color: var(--warning-text); }
.stat-sub { font-size: 13px; color: var(--text-secondary); margin: 2px 0 0; }

.panel { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.panel-header { padding: 0.85rem 1.1rem; border-bottom: 1px solid var(--border); font-size: 14px; font-weight: 600; }

.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 480px; }
.table th, .table td { padding: 10px 1.1rem; text-align: left; border-bottom: 1px solid var(--border); }
.table th { color: var(--text-secondary); font-weight: 600; }
.text-right { text-align: right; }

.badge { font-size: 12px; padding: 3px 10px; border-radius: 20px; font-weight: 600; }
.badge-borrador { background: var(--neutral-bg); color: var(--neutral-text); }
.badge-enviada { background: var(--warning-bg); color: var(--warning-text); }
.badge-aceptada { background: var(--success-bg); color: var(--success-text); }
.badge-rechazada, .badge-anulada { background: var(--danger-bg); color: var(--danger-text); }

.empty-state { padding: 2rem; text-align: center; color: var(--text-secondary); font-size: 14px; }

.menu-toggle {
  display: none;
  position: fixed;
  top: 14px; left: 14px;
  z-index: 30;
  width: 40px; height: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}
.menu-toggle span { width: 18px; height: 2px; background: var(--text-primary); }

.overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 15;
}

.search-form { display: flex; gap: 8px; padding: 1rem; flex-wrap: wrap; }
.input {
  flex: 1;
  min-width: 200px;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
.form-grid label {
  display: flex;
  flex-direction: column;
  font-size: 13px;
  color: var(--text-secondary);
  gap: 6px;
}
.form-grid input, .form-grid select, .form-grid textarea {
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  color: var(--text-primary);
  font-family: inherit;
  resize: vertical;
}
.form-actions {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 0.5rem;
}
.alert-error {
  background: var(--danger-bg);
  color: var(--danger-text);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  font-size: 14px;
}
.alert-error ul { margin: 0; padding-left: 1.1rem; }

.numero-tag {
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-blue);
  background: var(--bg-page);
  padding: 3px 10px;
  border-radius: 6px;
  margin-left: 8px;
  vertical-align: middle;
}

.hint { font-size: 13px; color: var(--text-secondary); margin: 0.75rem 0 0; }
.hint a { color: var(--brand-blue); }

#tabla-items input, #tabla-items select {
  width: 100%;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  font-family: inherit;
}
.linea-total { font-weight: 600; white-space: nowrap; }
.btn-remove {
  background: var(--danger-bg);
  color: var(--danger-text);
  border: none;
  border-radius: 6px;
  width: 26px; height: 26px;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
}

.totales { display: flex; flex-direction: column; gap: 8px; max-width: 320px; margin-left: auto; }
.totales div { display: flex; justify-content: space-between; font-size: 14px; }
.totales .total-final { border-top: 1px solid var(--border); padding-top: 8px; font-size: 17px; font-weight: 700; }

/* Login */
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  width: 100%;
  max-width: 360px;
}
.login-logo { max-width: 100%; display: block; margin: 0 auto 1.5rem; }
.login-form { display: flex; flex-direction: column; gap: 1rem; }
.login-form label { display: flex; flex-direction: column; font-size: 13px; color: var(--text-secondary); gap: 6px; }
.login-form input {
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
}

.badge-select {
  font-size: 12px; font-weight: 600; padding: 4px 8px; border-radius: 20px;
  border: none; cursor: pointer; font-family: inherit;
}
.badge-select.badge-borrador { background: var(--neutral-bg); color: var(--neutral-text); }
.badge-select.badge-enviada { background: var(--warning-bg); color: var(--warning-text); }
.badge-select.badge-aceptada { background: var(--success-bg); color: var(--success-text); }
.badge-select.badge-rechazada, .badge-select.badge-anulada { background: var(--danger-bg); color: var(--danger-text); }

.acciones-cell { display: flex; gap: 10px; justify-content: flex-end; align-items: center; flex-wrap: wrap; }
.acciones-cell a, .link-btn {
  color: var(--brand-blue); font-size: 13px; text-decoration: none;
  background: none; border: none; padding: 0; cursor: pointer; font-family: inherit;
}
.estado-form { display: inline-block; }

.info-tag { font-size: 12px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.02em; }

.admin-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.admin-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  text-decoration: none;
  color: var(--text-primary);
  display: block;
  transition: border-color 0.15s ease;
}
.admin-card:hover { border-color: var(--brand-blue); }
.admin-card-static { cursor: default; }
.admin-card-static:hover { border-color: var(--border); }
.admin-card-titulo { font-size: 14px; font-weight: 600; color: var(--text-secondary); }
.admin-card-valor { font-size: 26px; font-weight: 700; margin-top: 6px; }
.admin-card-desc { font-size: 12.5px; color: var(--text-secondary); margin-top: 6px; }
.admin-card code { background: var(--bg-page); padding: 1px 5px; border-radius: 4px; font-size: 12px; }

@media (max-width: 640px) {
  .admin-grid { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .menu-toggle { display: flex; }
  .sidebar { transform: translateX(-100%); width: 240px; }
  .sidebar.open { transform: translateX(0); }
  .overlay.open { display: block; }
  .content { margin-left: 0; padding: 1.25rem; padding-top: 4rem; }
  .stats-grid { grid-template-columns: 1fr; }
  .page-header h1 { font-size: 19px; }
}

@media (max-width: 640px) {
  .form-grid { grid-template-columns: 1fr; }
  .totales { max-width: 100%; }
}