/* ==========================================================================
   AIRLINK AI — ADMIN COMMAND CENTER STYLESHEET
   Clean, crisp modern SaaS dashboard matching main theme
   ========================================================================== */

:root {
  --admin-bg: #f8fafc;
  --admin-card-bg: #ffffff;
  --admin-sidebar-bg: #ffffff;
  --admin-border: #e2e8f0;
  --admin-border-subtle: #f1f5f9;
  --admin-text-primary: #0f172a;
  --admin-text-secondary: #475569;
  --admin-text-muted: #94a3b8;
  
  --admin-accent: #2563eb;
  --admin-accent-hover: #1d4ed8;
  --admin-accent-subtle: #eff6ff;
  
  --admin-success: #10b981;
  --admin-success-subtle: #ecfdf5;
  --admin-purple: #8b5cf6;
  --admin-purple-subtle: #f5f3ff;
  --admin-amber: #f59e0b;
  --admin-amber-subtle: #fffbeb;
  --admin-rose: #f43f5e;
  --admin-rose-subtle: #fff1f2;

  --admin-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --admin-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.06), 0 1px 2px -1px rgba(0, 0, 0, 0.04);
  --admin-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --admin-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.07), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

body.admin-body {
  font-family: var(--font-main);
  background-color: var(--admin-bg);
  color: var(--admin-text-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   LOGIN MODAL
   ========================================================================== */
.admin-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(6px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.admin-login-card {
  background: #ffffff;
  border-radius: 16px;
  width: 100%;
  max-width: 440px;
  padding: 36px 32px;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--admin-border);
  text-align: center;
}

.brand-badge-circle {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  margin: 0 auto 16px;
  box-shadow: 0 8px 16px -4px rgba(37, 99, 235, 0.35);
}

.login-brand h2 {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--admin-text-primary);
  margin-bottom: 8px;
}

.login-brand p {
  font-size: 13.5px;
  color: var(--admin-text-secondary);
  line-height: 1.5;
  margin-bottom: 24px;
}

.login-form {
  text-align: left;
}

.login-error-banner {
  background: var(--admin-rose-subtle);
  border: 1px solid rgba(244, 63, 94, 0.25);
  color: var(--admin-rose);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 16px;
  text-align: center;
}

.login-footer-hint {
  margin-top: 20px;
  font-size: 12px;
  color: var(--admin-text-muted);
}

/* ==========================================================================
   ADMIN LAYOUT & HEADER
   ========================================================================== */
.admin-layout {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.admin-header {
  height: 64px;
  background: #ffffff;
  border-bottom: 1px solid var(--admin-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.admin-header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.admin-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--admin-text-primary);
}

.brand-logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}

.brand-name {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-accent {
  color: var(--admin-accent);
}

.admin-badge {
  background: #f1f5f9;
  color: var(--admin-text-secondary);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: 6px;
  border: 1px solid var(--admin-border);
}

.admin-header-center {
  display: flex;
  align-items: center;
}

.server-health-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #f8fafc;
  border: 1px solid var(--admin-border);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--admin-text-secondary);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--admin-success);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.admin-header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.admin-profile-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #f1f5f9;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--admin-text-primary);
}

.admin-avatar {
  width: 22px;
  height: 22px;
  background: var(--admin-accent);
  color: #fff;
  border-radius: 50%;
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

/* ==========================================================================
   SIDEBAR & CONTENT CONTAINER
   ========================================================================== */
.admin-container {
  display: flex;
  flex: 1;
}

.admin-sidebar {
  width: 260px;
  background: var(--admin-sidebar-bg);
  border-right: 1px solid var(--admin-border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 20px 14px;
  position: sticky;
  top: 64px;
  height: calc(100vh - 64px);
}

.admin-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 10px;
  background: transparent;
  border: none;
  color: var(--admin-text-secondary);
  font-family: var(--font-main);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  transition: all 0.15s ease;
  width: 100%;
}

.nav-item:hover {
  background: #f1f5f9;
  color: var(--admin-text-primary);
}

.nav-item.active {
  background: var(--admin-accent-subtle);
  color: var(--admin-accent);
  font-weight: 700;
}

.nav-count-badge {
  margin-left: auto;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 10px;
  background: #e2e8f0;
  color: #475569;
}

.nav-count-badge.green {
  background: var(--admin-success-subtle);
  color: var(--admin-success);
}

.nav-count-badge.purple {
  background: var(--admin-purple-subtle);
  color: var(--admin-purple);
}

.sidebar-footer-card {
  background: #f8fafc;
  border: 1px solid var(--admin-border);
  padding: 12px 14px;
  border-radius: 10px;
}

.footer-card-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--admin-text-primary);
}

.footer-card-desc {
  font-size: 11px;
  color: var(--admin-text-muted);
  margin-top: 3px;
}

.admin-content {
  flex: 1;
  padding: 32px 40px;
  max-width: 1320px;
}

.admin-tab-pane {
  display: none;
}

.admin-tab-pane.active {
  display: block;
}

/* ==========================================================================
   PAGE HEADERS & ACTIONS
   ========================================================================== */
.page-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  gap: 16px;
  flex-wrap: wrap;
}

.page-title {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--admin-text-primary);
}

.page-sub {
  font-size: 13.5px;
  color: var(--admin-text-secondary);
  margin-top: 4px;
}

.page-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ==========================================================================
   KPI STAT CARDS
   ========================================================================== */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 28px;
}

@media (max-width: 1080px) {
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

.kpi-card {
  background: #ffffff;
  border: 1px solid var(--admin-border);
  border-radius: 14px;
  padding: 22px;
  box-shadow: var(--admin-shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.kpi-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--admin-shadow-md);
}

.kpi-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.kpi-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--admin-text-secondary);
}

.kpi-icon-wrap {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
}

.kpi-icon-wrap.green { background: var(--admin-success-subtle); color: var(--admin-success); }
.kpi-icon-wrap.blue { background: var(--admin-accent-subtle); color: var(--admin-accent); }
.kpi-icon-wrap.purple { background: var(--admin-purple-subtle); color: var(--admin-purple); }
.kpi-icon-wrap.amber { background: var(--admin-amber-subtle); color: var(--admin-amber); }

.kpi-value {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--admin-text-primary);
  margin-bottom: 8px;
  font-family: var(--font-main);
}

.kpi-unit {
  font-size: 15px;
  font-weight: 600;
  color: var(--admin-text-secondary);
}

.kpi-sub {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--admin-text-muted);
}

.trend-up {
  color: var(--admin-success);
  font-weight: 700;
}

.trend-neutral {
  color: var(--admin-accent);
  font-weight: 700;
}

/* ==========================================================================
   CARD BOXES & TABLES
   ========================================================================== */
.overview-dual-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 960px) {
  .overview-dual-grid {
    grid-template-columns: 1fr;
  }
}

.admin-card-box {
  background: #ffffff;
  border: 1px solid var(--admin-border);
  border-radius: 14px;
  padding: 24px;
  box-shadow: var(--admin-shadow-sm);
  margin-bottom: 24px;
}

.card-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.card-title {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--admin-text-primary);
}

.card-sub {
  font-size: 12.5px;
  color: var(--admin-text-secondary);
  margin-top: 3px;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--admin-border);
  border-radius: 10px;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.admin-table th {
  background: #f8fafc;
  padding: 12px 14px;
  font-weight: 700;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--admin-text-secondary);
  border-bottom: 1px solid var(--admin-border);
  white-space: nowrap;
}

.admin-table td {
  padding: 13px 14px;
  border-bottom: 1px solid var(--admin-border-subtle);
  color: var(--admin-text-primary);
  vertical-align: middle;
}

.admin-table tr:last-child td {
  border-bottom: none;
}

.admin-table tr:hover td {
  background-color: #f8fafc;
}

.table-empty {
  text-align: center;
  padding: 32px 14px !important;
  color: var(--admin-text-muted);
  font-size: 13px;
}

/* ==========================================================================
   BADGES & PILLS
   ========================================================================== */
.badge-pill {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-pill.green { background: var(--admin-success-subtle); color: var(--admin-success); border: 1px solid rgba(16, 185, 129, 0.2); }
.badge-pill.blue { background: var(--admin-accent-subtle); color: var(--admin-accent); border: 1px solid rgba(37, 99, 235, 0.2); }
.badge-pill.purple { background: var(--admin-purple-subtle); color: var(--admin-purple); border: 1px solid rgba(139, 92, 246, 0.2); }
.badge-pill.amber { background: var(--admin-amber-subtle); color: var(--admin-amber); border: 1px solid rgba(245, 158, 11, 0.2); }

.code-pill {
  font-family: var(--font-mono);
  font-size: 11.5px;
  background: #f1f5f9;
  padding: 2px 6px;
  border-radius: 4px;
  color: #334155;
}

/* ==========================================================================
   FORMS & INPUTS
   ========================================================================== */
.admin-settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 960px) {
  .admin-settings-grid {
    grid-template-columns: 1fr;
  }
}

.form-group {
  margin-bottom: 18px;
}

.form-row {
  display: flex;
  gap: 16px;
}

.form-group.half {
  flex: 1;
}

.form-label {
  display: block;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--admin-text-primary);
  margin-bottom: 6px;
}

.admin-input, .admin-select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--admin-border);
  border-radius: 8px;
  font-family: var(--font-main);
  font-size: 13.5px;
  color: var(--admin-text-primary);
  background: #ffffff;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.admin-input-sm {
  padding: 7px 12px;
  font-size: 12.5px;
}

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

.input-with-icon {
  position: relative;
}

.input-with-icon svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--admin-text-muted);
}

.input-with-icon .admin-input {
  padding-left: 38px;
}

.search-input-wrap {
  position: relative;
  width: 260px;
}

.search-input-wrap svg {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--admin-text-muted);
}

.search-input-wrap .admin-input {
  padding-left: 32px;
}

.form-help {
  display: block;
  font-size: 11.5px;
  color: var(--admin-text-muted);
  margin-top: 5px;
}

.form-inline-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 8px;
}

.test-status-hint {
  font-size: 12px;
  font-weight: 600;
}

.test-status-hint.success { color: var(--admin-success); }
.test-status-hint.error { color: var(--admin-rose); }

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn-admin-primary {
  background: var(--admin-accent);
  color: #ffffff;
  border: none;
  padding: 10px 18px;
  border-radius: 8px;
  font-family: var(--font-main);
  font-size: 13.5px;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.15s ease;
}

.btn-admin-primary:hover {
  background: var(--admin-accent-hover);
}

.btn-admin-secondary {
  background: #ffffff;
  color: var(--admin-text-secondary);
  border: 1px solid var(--admin-border);
  padding: 9px 16px;
  border-radius: 8px;
  font-family: var(--font-main);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
}

.btn-admin-secondary:hover {
  background: #f8fafc;
  color: var(--admin-text-primary);
  border-color: #cbd5e1;
}

.btn-admin-outline-sm {
  background: transparent;
  border: 1px solid var(--admin-border);
  color: var(--admin-text-secondary);
  font-size: 12.5px;
  font-weight: 600;
  padding: 5px 10px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  transition: all 0.15s ease;
}

.btn-admin-outline-sm:hover {
  background: #f1f5f9;
  color: var(--admin-text-primary);
}

.btn-admin-ghost-sm {
  background: transparent;
  border: none;
  color: var(--admin-text-secondary);
  font-family: var(--font-main);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.btn-admin-ghost-sm:hover {
  background: #f1f5f9;
  color: var(--admin-text-primary);
}

.btn-admin-action-sm {
  background: var(--admin-accent-subtle);
  border: 1px solid rgba(37, 99, 235, 0.2);
  color: var(--admin-accent);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-admin-action-sm:hover {
  background: var(--admin-accent);
  color: #fff;
}

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12.5px;
}

/* ==========================================================================
   MODAL CARD FOR ADJUST CREDITS
   ========================================================================== */
.admin-modal-card {
  background: #ffffff;
  border-radius: 14px;
  width: 100%;
  max-width: 480px;
  border: 1px solid var(--admin-border);
  box-shadow: var(--admin-shadow-lg);
  overflow: hidden;
}

.modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--admin-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.modal-title {
  font-size: 16px;
  font-weight: 800;
  color: var(--admin-text-primary);
}

.modal-sub {
  font-size: 12px;
  color: var(--admin-text-secondary);
}

.modal-close-btn {
  background: transparent;
  border: none;
  font-size: 22px;
  color: var(--admin-text-muted);
  cursor: pointer;
  line-height: 1;
}

.modal-close-btn:hover {
  color: var(--admin-text-primary);
}

.admin-modal-body {
  padding: 24px;
}

.balance-preview-box {
  background: #f8fafc;
  border: 1px solid var(--admin-border);
  border-radius: 8px;
  padding: 12px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13.5px;
  margin-bottom: 18px;
}

.balance-preview-box strong {
  font-weight: 800;
  color: var(--admin-accent);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
}