/* ========== Variables (pro theme Stripe/Linear style) ========== */
:root {
  --admin-bg: #0c0c0e;
  --admin-bg-elevated: #111113;
  --admin-bg-card: #161618;
  --admin-bg-hover: #1c1c1f;
  --admin-border: rgba(255, 255, 255, 0.06);
  --admin-border-strong: rgba(255, 255, 255, 0.1);
  --admin-text: #fafafa;
  --admin-text-secondary: #a1a1aa;
  --admin-text-muted: #71717a;
  --admin-primary: #6366f1;
  --admin-primary-hover: #818cf8;
  --admin-primary-soft: rgba(99, 102, 241, 0.15);
  --admin-accent: #f59e0b;
  --admin-accent-soft: rgba(245, 158, 11, 0.15);
  --admin-success: #22c55e;
  --admin-error: #ef4444;
  --admin-error-soft: rgba(239, 68, 68, 0.12);
  --admin-radius: 12px;
  --admin-radius-sm: 8px;
  --admin-radius-lg: 16px;
  --admin-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --admin-sidebar-width: 260px;
  --admin-header-height: 60px;
  --admin-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ========== Reset & base ========== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--admin-font);
  background: var(--admin-bg);
  color: var(--admin-text);
  line-height: 1.5;
}

.hidden {
  display: none !important;
}

/* ========== Login view ========== */
#loginView {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background: var(--admin-bg);
  background-image: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(99, 102, 241, 0.12), transparent 55%);
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--admin-bg-card);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-lg);
  padding: 2.5rem;
  box-shadow: var(--admin-shadow), 0 0 0 1px rgba(255,255,255,0.02);
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.login-logo-img {
  flex-shrink: 0;
  border-radius: 8px;
}

.login-card h1 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--admin-text);
}

.login-card h1 .logo-f {
  color: var(--admin-accent);
}

.login-admin-badge {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--admin-text-muted);
  margin-left: 0.35rem;
}

.login-card .login-subtitle {
  color: var(--admin-text-secondary);
  font-size: 0.9375rem;
  margin: 0 0 1.75rem;
}

#loginForm {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 0;
}

#loginForm input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  font-family: inherit;
  color: var(--admin-text);
  background: var(--admin-bg-elevated);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

#loginForm input::placeholder {
  color: var(--admin-text-muted);
}

#loginForm input:focus {
  outline: none;
  border-color: var(--admin-primary);
  box-shadow: 0 0 0 3px var(--admin-primary-soft);
}

#loginForm button {
  margin-top: 0.25rem;
  padding: 0.75rem 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  color: #fff;
  background: var(--admin-primary);
  border: none;
  border-radius: var(--admin-radius-sm);
  cursor: pointer;
  transition: background 0.2s ease, transform 0.1s ease;
}

#loginForm button:hover {
  background: var(--admin-primary-hover);
}

#loginForm button:active {
  transform: scale(0.99);
}

#loginError {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  color: var(--admin-error);
  background: var(--admin-error-soft);
  border-radius: var(--admin-radius-sm);
  border: 1px solid rgba(239, 68, 68, 0.25);
}

/* ========== App layout (sidebar + main) ========== */
#appView {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  width: var(--admin-sidebar-width);
  flex-shrink: 0;
  background: var(--admin-bg-elevated);
  border-right: 1px solid var(--admin-border);
  padding: 1rem 0;
  display: flex;
  flex-direction: column;
}

.admin-sidebar-brand {
  padding: 1.25rem 1.25rem 1rem;
  margin-bottom: 0.5rem;
  border-bottom: 1px solid var(--admin-border);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.admin-sidebar-brand .admin-brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  flex-shrink: 0;
}

.admin-sidebar-brand .admin-logo-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.admin-logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--admin-text);
}

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

.admin-brand-label {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--admin-text-muted);
}

.admin-sidebar-brand h1 {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--admin-text);
}

.nav-icon {
  opacity: 0.7;
  font-size: 1rem;
  width: 1.25rem;
  display: inline-block;
  text-align: center;
}

.admin-sidebar-nav {
  flex: 1;
  padding: 0.5rem 0;
}

.admin-nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 1.25rem;
  margin: 0 0.5rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--admin-text-secondary);
  text-decoration: none;
  border-radius: var(--admin-radius-sm);
  transition: color 0.2s ease, background 0.2s ease;
}

.admin-nav-link:hover {
  color: var(--admin-text);
  background: var(--admin-bg-hover);
}

.admin-nav-link.active {
  color: var(--admin-primary);
  background: var(--admin-primary-soft);
}

.admin-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.admin-header {
  height: var(--admin-header-height);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
  padding: 0 1.5rem;
  background: var(--admin-bg-card);
  border-bottom: 1px solid var(--admin-border);
  box-shadow: 0 1px 0 rgba(0,0,0,0.2);
}

.admin-header .user-email {
  font-size: 0.875rem;
  color: var(--admin-text-secondary);
}

.admin-header .btn-logout {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  font-family: inherit;
  color: var(--admin-text-secondary);
  background: var(--admin-bg-hover);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-sm);
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.admin-header .btn-logout:hover {
  color: var(--admin-text);
  background: var(--admin-bg-elevated);
  border-color: var(--admin-border-strong);
}

.admin-content {
  flex: 1;
  padding: 1.5rem;
  overflow: auto;
}

/* ========== Cards ========== */
.admin-card {
  background: var(--admin-bg-card);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.admin-card h2 {
  margin: 0 0 1.25rem;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--admin-text);
}

.admin-card h3 {
  margin: 1.25rem 0 0.75rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--admin-text-secondary);
}

.admin-card > p {
  margin: 0 0 1rem;
  font-size: 0.9375rem;
  color: var(--admin-text-secondary);
}

/* ========== Stats & KPI ========== */
.admin-stats {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.kpi-grid {
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.admin-stat {
  background: var(--admin-bg-elevated);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-sm);
  padding: 1.25rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.admin-stat.kpi {
  padding: 1.5rem;
  border-radius: var(--admin-radius);
  background: var(--admin-bg-card);
  border-color: var(--admin-border);
}

.admin-stat.kpi strong {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--admin-text);
}

.admin-stat:hover {
  border-color: var(--admin-border-strong);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.admin-stat strong {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--admin-text);
  margin-bottom: 0.25rem;
}

.admin-stat span {
  font-size: 0.8125rem;
  color: var(--admin-text-muted);
  font-weight: 500;
}

/* ========== Page title & sections ========== */
.page-title {
  margin-bottom: 1.5rem;
}

.page-title h1 {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--admin-text);
}

.page-subtitle {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--admin-text-muted);
}

.section-title {
  margin: 2rem 0 1rem !important;
  font-size: 0.9375rem !important;
  font-weight: 600 !important;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--admin-text-muted) !important;
}

/* ========== Charts ========== */
.charts-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 900px) {
  .charts-row { grid-template-columns: 1fr; }
}

.chart-card {
  background: var(--admin-bg-card);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius);
  padding: 1.25rem;
  overflow: hidden;
}

.chart-card h3 {
  margin: 0 0 1rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--admin-text-secondary);
}

.chart-wrap {
  height: 220px;
  position: relative;
}

.chart-doughnut { height: 200px; max-width: 280px; margin: 0 auto; }

.chart-card-half {
  min-width: 0;
}

.compact-table table { font-size: 0.8125rem; }
.compact-table th, .compact-table td { padding: 0.5rem 0.75rem; }

/* ========== Tables ========== */
.admin-table-wrap {
  overflow-x: auto;
  border-radius: var(--admin-radius-sm);
  border: 1px solid var(--admin-border);
}

.admin-table-wrap table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.admin-table-wrap th,
.admin-table-wrap td {
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--admin-border);
}

.admin-table-wrap th {
  font-weight: 600;
  color: var(--admin-text-secondary);
  background: var(--admin-bg-elevated);
  white-space: nowrap;
}

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

.admin-table-wrap tbody tr {
  transition: background 0.15s ease;
}

.admin-table-wrap tbody tr:hover {
  background: var(--admin-bg-hover);
}

.admin-table-wrap tbody tr:nth-child(even) {
  background: rgba(255,255,255,0.02);
}

.admin-table-wrap tbody tr:nth-child(even):hover {
  background: var(--admin-bg-hover);
}

.admin-table-wrap td {
  color: var(--admin-text);
  vertical-align: middle;
}

.admin-table-wrap .btn-delete {
  padding: 0.35rem 0.6rem;
  font-size: 0.8125rem;
  font-family: inherit;
  color: var(--admin-text-muted);
  background: transparent;
  border: 1px solid var(--admin-border);
  border-radius: 6px;
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.admin-table-wrap .btn-delete:hover {
  color: var(--admin-error);
  background: var(--admin-error-soft);
  border-color: rgba(239, 68, 68, 0.3);
}

/* ========== Forms & inputs ========== */
#userSearch {
  max-width: 320px;
  width: 100%;
  padding: 0.6rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.9375rem;
  font-family: inherit;
  color: var(--admin-text);
  background: var(--admin-bg-elevated);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-sm);
}

#userSearch::placeholder,
.search-input::placeholder {
  color: var(--admin-text-muted);
}

#userSearch:focus,
.search-input:focus {
  outline: none;
  border-color: var(--admin-primary);
  box-shadow: 0 0 0 3px var(--admin-primary-soft);
}

.search-input {
  max-width: 320px;
  width: 100%;
  padding: 0.6rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.9375rem;
  font-family: inherit;
  color: var(--admin-text);
  background: var(--admin-bg-elevated);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-sm);
}

/* ========== Content tabs ========== */
.content-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.content-tab {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  font-family: inherit;
  color: var(--admin-text-secondary);
  background: var(--admin-bg-elevated);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-sm);
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.content-tab:hover {
  color: var(--admin-text);
  background: var(--admin-bg-hover);
  border-color: var(--admin-border-strong);
}

.content-tab.active {
  color: #fff;
  background: var(--admin-primary);
  border-color: var(--admin-primary);
}

/* ========== Content panel ========== */
#contentPanel {
  margin-top: 0.5rem;
}

#contentPanel > h3 {
  margin: 0 0 1rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--admin-text-secondary);
}

#contentPanel > p {
  margin: 0 0 1rem;
  font-size: 0.9375rem;
  color: var(--admin-text-secondary);
}

#contentPanel .error {
  color: var(--admin-error);
  padding: 1rem;
  background: var(--admin-error-soft);
  border-radius: var(--admin-radius-sm);
  border: 1px solid rgba(239, 68, 68, 0.25);
}

#contentPanel .admin-config-hint {
  margin-top: 1rem;
  font-size: 0.875rem;
  color: var(--admin-text-muted);
}

/* ========== Pagination ========== */
.pagination {
  margin-top: 1rem;
  font-size: 0.875rem;
  color: var(--admin-text-muted);
}

/* ========== Empty state ========== */
.admin-card > p:only-child,
.admin-table-wrap > p,
#recentTx > p,
#usersList > p,
#transactionsList > p {
  color: var(--admin-text-muted);
  font-size: 0.9375rem;
  margin: 0;
  padding: 1.5rem 0;
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
  #appView {
    flex-direction: column;
  }

  .admin-sidebar {
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
    padding: 0.75rem;
    gap: 0.5rem;
  }

  .admin-sidebar-brand {
    width: 100%;
    padding: 0 0 0.75rem;
    margin-bottom: 0;
    border-bottom: 1px solid var(--admin-border);
  }

  .admin-sidebar-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    padding: 0;
  }

  .admin-nav-link {
    margin: 0;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
  }

  .admin-content {
    padding: 1rem;
  }
}

/* Secondary button & modal */
.btn-secondary {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-family: inherit;
  color: var(--admin-text-secondary);
  background: var(--admin-bg-hover);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-sm);
  cursor: pointer;
  margin-right: 0.5rem;
}
.btn-secondary:hover {
  color: var(--admin-text);
  background: var(--admin-border-strong);
}
.admin-header .btn-secondary { margin-left: auto; margin-right: 0.5rem; }

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}
.modal-overlay.hidden { display: none; }
.modal {
  background: var(--admin-bg-card);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-lg);
  padding: 1.5rem;
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow: auto;
  position: relative;
}
.modal-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: none;
  border: none;
  color: var(--admin-text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}
.modal-close:hover { color: var(--admin-text); }
.modal h3 { margin-top: 0; }
.modal form { display: flex; flex-direction: column; gap: 1rem; }
.modal form label { display: block; font-size: 0.875rem; color: var(--admin-text-secondary); }
.modal form input, .modal form select { width: 100%; padding: 0.5rem; border-radius: var(--admin-radius-sm); border: 1px solid var(--admin-border); background: var(--admin-bg); color: var(--admin-text); }
.btn-small { padding: 0.25rem 0.5rem; font-size: 0.75rem; margin-right: 0.25rem; }
.status-badge { display: inline-block; padding: 0.2rem 0.5rem; border-radius: 4px; font-size: 0.75rem; }
.status-active { background: var(--admin-primary-soft); color: var(--admin-primary); }
.status-suspended { background: var(--admin-error-soft); color: var(--admin-error); }
.status-closed { background: var(--admin-text-muted); color: var(--admin-text-secondary); }
.status-self_excluded { background: var(--admin-error-soft); color: var(--admin-error); }