:root {
  --bg: #0f1117;
  --card: #1a1d27;
  --card-hover: #22263a;
  --text: #e4e4e7;
  --text-secondary: #a1a1aa;
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --success: #22c55e;
  --warning: #f59e0b;
  --error: #ef4444;
  --border: #27273a;
  --sidebar: #141620;
  --input-bg: #1a1d27;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* Login */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  width: 100%;
  max-width: 400px;
  text-align: center;
}

.login-logo {
  color: var(--primary);
  margin-bottom: 16px;
}

.login-card h1 {
  font-size: 22px;
  margin-bottom: 4px;
}

.login-subtitle {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 16px;
  text-align: left;
}

.form-group label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-group input {
  width: 100%;
  padding: 10px 12px;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus {
  border-color: var(--primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  width: 100%;
}

.btn-primary:hover { background: var(--primary-hover); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

.error-message {
  margin-top: 12px;
  padding: 10px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--error);
  border-radius: 8px;
  color: var(--error);
  font-size: 13px;
}

.error-message.hidden { display: none; }

.spinner {
  width: 18px; height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.hidden { display: none !important; }

@keyframes spin { to { transform: rotate(360deg); } }

/* Dashboard layout */
.dashboard {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 240px;
  background: var(--sidebar);
  padding: 24px 16px;
  flex-shrink: 0;
  position: fixed;
  height: 100vh;
  overflow-y: auto;
}

.sidebar-logo {
  color: var(--primary);
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 32px;
  padding: 0 8px;
}

.sidebar-nav { list-style: none; }

.sidebar-nav li { margin-bottom: 4px; }

.sidebar-nav a {
  display: flex;
  align-items: center;
  padding: 9px 12px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 8px;
  font-size: 14px;
  transition: all 0.2s;
}

.nav-badge {
  margin-left: auto;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: 10px;
  background: var(--warning);
  color: #1a1a1a;
  font-size: 11px;
  font-weight: 700;
  align-items: center;
  justify-content: center;
}

.sidebar-user {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
  background: var(--card);
  color: var(--text);
}

.sidebar-footer {
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.main {
  flex: 1;
  margin-left: 240px;
  padding: 24px;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.header h2 { font-size: 20px; }

.btn-logout {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
}

.btn-logout:hover { border-color: var(--error); color: var(--error); }

/* Cards */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.metric-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.metric-card h4 {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.metric-card .value {
  font-size: 28px;
  font-weight: bold;
}

.metric-card .subtitle {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* Tables */
.table-container {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 12px 16px;
  text-align: left;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.chart-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.chart-card h3 {
  font-size: 16px;
  margin-bottom: 16px;
}

/* Status badges */
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
}

.badge-pending { background: rgba(245,158,11,0.15); color: var(--warning); }
.badge-approved { background: rgba(34,197,94,0.15); color: var(--success); }
.badge-rejected { background: rgba(239,68,68,0.15); color: var(--error); }
.badge-under_review { background: rgba(99,102,241,0.15); color: var(--primary); }

/* Forms */
.form-row {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
}

.form-row input,
.form-row select {
  flex: 1;
  padding: 8px 12px;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 14px;
  outline: none;
}

.form-row input:focus,
.form-row select:focus { border-color: var(--primary); }

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
  border-radius: 6px;
}

.btn-danger { background: var(--error); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

/* Chips (límites, precios) */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  white-space: nowrap;
}

.chip strong {
  color: var(--text);
  font-weight: 600;
}

.chip-on {
  background: rgba(34, 197, 94, 0.12);
  border-color: rgba(34, 197, 94, 0.3);
  color: var(--success);
}

.chip-price {
  background: rgba(99, 102, 241, 0.12);
  border-color: rgba(99, 102, 241, 0.3);
  color: #a5b4fc;
}

.muted {
  color: var(--text-secondary);
  opacity: 0.6;
}

.badge-neutral {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
}

td code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  color: #a5b4fc;
}

td.actions {
  white-space: nowrap;
}

td.empty {
  text-align: center;
  color: var(--text-secondary);
  padding: 32px;
}

.rate-up {
  color: #ef4444;
  font-weight: 600;
}

.rate-down {
  color: #10b981;
  font-weight: 600;
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.modal-content {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-content h3 {
  margin-bottom: 16px;
}

.field-label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-row-label {
  font-size: 13px;
  color: var(--text-secondary);
  white-space: nowrap;
  align-self: center;
  min-width: 130px;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 200;
  max-width: 90vw;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast-success { background: var(--success); color: #fff; }
.toast-error { background: var(--error); color: #fff; }
.toast-info { background: var(--primary); color: #fff; }

/* Page header bar */
.page-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.page-head h2 {
  font-size: 20px;
}

.page-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.toolbar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 16px;
}

.toolbar input,
.toolbar select {
  padding: 8px 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  outline: none;
}

.toolbar input:focus,
.toolbar select:focus { border-color: var(--primary); }

.toolbar input { min-width: 240px; }

/* Stat strip */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}

.stat .label {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.stat .num {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
}

.stat .num.html-cell {
  font-size: 1rem;
  line-height: 1.2;
}

.stat .num.warn { color: var(--warning); }
.stat .num.bad { color: var(--error); }
.stat .num.good { color: var(--success); }

/* Usage bar (limits) */
.usage {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 160px;
}

.usage-row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-secondary);
}

.usage-bar {
  height: 5px;
  background: var(--card-hover);
  border-radius: 3px;
  overflow: hidden;
}

.usage-fill {
  height: 100%;
  border-radius: 3px;
  background: var(--success);
  transition: width 0.3s;
}

.usage-fill.warn { background: var(--warning); }
.usage-fill.bad { background: var(--error); }

/* Alert list */
.alert-list { display: flex; flex-direction: column; gap: 8px; }

.alert {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 13px;
  border: 1px solid transparent;
}

.alert-error { background: rgba(239,68,68,0.1); border-color: rgba(239,68,68,0.3); color: #fca5a5; }
.alert-warning { background: rgba(245,158,11,0.1); border-color: rgba(245,158,11,0.3); color: #fcd34d; }
.alert-info { background: rgba(99,102,241,0.1); border-color: rgba(99,102,241,0.3); color: #a5b4fc; }
.alert-ok { background: rgba(34,197,94,0.1); border-color: rgba(34,197,94,0.3); color: #86efac; }

/* Detail drawer */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 90;
}

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  width: min(560px, 100vw);
  background: var(--card);
  border-left: 1px solid var(--border);
  z-index: 100;
  overflow-y: auto;
  padding: 24px;
}

.drawer h3 { margin-bottom: 4px; }
.drawer .drawer-sub { color: var(--text-secondary); font-size: 13px; margin-bottom: 20px; }

.detail-grid {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 8px 16px;
  font-size: 14px;
  margin-bottom: 20px;
}

.detail-grid dt { color: var(--text-secondary); }
.detail-grid dd { margin: 0; word-break: break-word; }

.drawer-section { margin-top: 24px; }
.drawer-section h4 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.spinner-page {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px;
}

.skeleton {
  background: linear-gradient(90deg, var(--card) 25%, var(--card-hover) 50%, var(--card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: 6px;
  height: 14px;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@media (max-width: 900px) {
  .sidebar { position: static; width: 100%; height: auto; }
  .main { margin-left: 0; padding: 16px; }
  .dashboard { flex-direction: column; }
  .detail-grid { grid-template-columns: 1fr; gap: 2px 0; }
  .detail-grid dt { margin-top: 8px; }
}