@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ============================================================
   Design Tokens
   ============================================================ */
:root {
  /* Backgrounds */
  --bg-main:            #09090B;
  --bg-surface:         #111113;
  --bg-surface-2:       #18181B;
  --bg-surface-hover:   #1E1E22;
  --bg-input:           #0D0D10;

  /* Borders */
  --border-color:       #27272A;
  --border-subtle:      #1C1C1F;

  /* Text */
  --text-primary:       #F4F4F5;
  --text-secondary:     #A1A1AA;
  --text-tertiary:      #71717A;

  /* Semantic Accents */
  --accent-ok:              #10B981;
  --accent-ok-bg:           rgba(16, 185, 129, 0.10);
  --accent-ok-border:       rgba(16, 185, 129, 0.25);

  --accent-warn:            #F59E0B;
  --accent-warn-bg:         rgba(245, 158, 11, 0.10);
  --accent-warn-border:     rgba(245, 158, 11, 0.25);

  --accent-error:           #EF4444;
  --accent-error-bg:        rgba(239, 68, 68, 0.10);
  --accent-error-border:    rgba(239, 68, 68, 0.25);

  --accent-action:          #3B82F6;
  --accent-action-bg:       rgba(59, 130, 246, 0.10);
  --accent-action-border:   rgba(59, 130, 246, 0.25);

  --accent-purple:          #8B5CF6;
  --accent-purple-bg:       rgba(139, 92, 246, 0.10);
  --accent-purple-border:   rgba(139, 92, 246, 0.25);

  /* Layout */
  --sidebar-width: 256px;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-normal: 220ms ease;
}

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

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Custom Scrollbar */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg-surface-hover); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-tertiary); }

/* ============================================================
   Sidebar
   ============================================================ */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background-color: var(--bg-surface);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-primary);
  text-decoration: none;
  padding: 18px 20px 16px;
  border-bottom: 1px solid var(--border-subtle);
  letter-spacing: -0.01em;
  flex-shrink: 0;
}
.sidebar-brand:hover { color: var(--text-primary); }

.brand-icon {
  width: 28px;
  height: 28px;
  background: var(--accent-action-bg);
  border: 1px solid var(--accent-action-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-action);
  font-size: 0.8rem;
  flex-shrink: 0;
}

.sidebar-nav-section {
  padding: 18px 20px 6px;
}

.sidebar-nav-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.sidebar-nav {
  list-style: none;
  padding: 0 10px;
  margin: 0;
}

.sidebar-nav-item { margin-bottom: 2px; }

.sidebar-nav-link {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.855rem;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  position: relative;
}

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

.sidebar-nav-link.active {
  background-color: var(--accent-action-bg);
  color: var(--accent-action);
}

.sidebar-nav-link.active::before {
  content: '';
  position: absolute;
  left: 0; top: 7px; bottom: 7px;
  width: 3px;
  background: var(--accent-action);
  border-radius: 0 2px 2px 0;
}

.nav-icon {
  font-size: 0.95rem;
  flex-shrink: 0;
}

.sidebar-footer {
  margin-top: auto;
  padding: 14px 12px;
  border-top: 1px solid var(--border-color);
  flex-shrink: 0;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-md);
  margin-bottom: 8px;
}

.sidebar-user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-action-bg);
  border: 1px solid var(--accent-action-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-action);
  font-size: 0.75rem;
  position: relative;
  flex-shrink: 0;
}

.sidebar-user-avatar::after {
  content: '';
  position: absolute;
  bottom: -1px; right: -1px;
  width: 8px; height: 8px;
  background: var(--accent-ok);
  border-radius: 50%;
  border: 2px solid var(--bg-surface);
}

.sidebar-user-name {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-primary);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ============================================================
   Main Layout
   ============================================================ */
.main-wrapper {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.page-content {
  padding: 28px 32px 48px;
  flex: 1;
}

/* Mobile Header */
.mobile-header { display: none; }

@media (max-width: 991.98px) {
  .sidebar {
    transform: translateX(-100%);
    z-index: 1040;
    transition: transform 0.25s ease;
  }
  .sidebar.show { transform: translateX(0); }

  .main-wrapper { margin-left: 0; }
  .page-content { padding: 20px 16px 40px; padding-top: 76px; }

  .mobile-header {
    display: flex;
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    height: 56px;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    z-index: 1030;
    align-items: center;
    padding: 0 16px;
    justify-content: space-between;
  }

  .mobile-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
    z-index: 1035;
    backdrop-filter: blur(2px);
  }
  .mobile-backdrop.show { display: block; }
}

/* ============================================================
   Flash Messages
   ============================================================ */
.flash-container { margin-bottom: 20px; }

.flash-container .alert {
  background-color: var(--bg-surface-2);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  padding: 11px 16px;
  font-size: 0.855rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.alert-success { border-left: 3px solid var(--accent-ok) !important; }
.alert-danger  { border-left: 3px solid var(--accent-error) !important; }
.alert-warning { border-left: 3px solid var(--accent-warn) !important; }
.alert-info    { border-left: 3px solid var(--accent-action) !important; }

/* ============================================================
   Typography
   ============================================================ */
.font-mono {
  font-family: 'JetBrains Mono', 'IBM Plex Mono', monospace;
  font-size: 0.85em;
}

/* ============================================================
   Cards
   ============================================================ */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: none;
  color: var(--text-primary);
}

.card-header {
  background-color: transparent;
  border-bottom: 1px solid var(--border-color);
  padding: 14px 20px;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-primary);
}

.card-body { padding: 20px; }

.card-footer {
  background-color: transparent;
  border-top: 1px solid var(--border-color);
  padding: 12px 20px;
}

/* KPI Cards */
.kpi-card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.kpi-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.45);
}

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; bottom: 0;
  width: 3px;
  background: var(--kpi-color, var(--accent-action));
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.kpi-card::after {
  content: '';
  position: absolute;
  top: -20px; right: -20px;
  width: 90px; height: 90px;
  background: radial-gradient(circle, var(--kpi-color, var(--accent-action)), transparent 70%);
  opacity: 0.06;
  pointer-events: none;
}

.kpi-card.active-card {
  box-shadow: 0 0 0 1.5px var(--kpi-color, var(--accent-action)), 0 8px 28px rgba(0,0,0,0.45) !important;
  transform: translateY(-2px);
}

.kpi-card-blue   { --kpi-color: var(--accent-action); }
.kpi-card-green  { --kpi-color: var(--accent-ok); }
.kpi-card-amber  { --kpi-color: var(--accent-warn); }
.kpi-card-red    { --kpi-color: var(--accent-error); }
.kpi-card-purple { --kpi-color: var(--accent-purple); }

.kpi-icon {
  width: 36px; height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.kpi-card-blue   .kpi-icon { background: var(--accent-action-bg);  border: 1px solid var(--accent-action-border); color: var(--accent-action); }
.kpi-card-green  .kpi-icon { background: var(--accent-ok-bg);      border: 1px solid var(--accent-ok-border);     color: var(--accent-ok); }
.kpi-card-amber  .kpi-icon { background: var(--accent-warn-bg);    border: 1px solid var(--accent-warn-border);   color: var(--accent-warn); }
.kpi-card-red    .kpi-icon { background: var(--accent-error-bg);   border: 1px solid var(--accent-error-border);  color: var(--accent-error); }
.kpi-card-purple .kpi-icon { background: var(--accent-purple-bg);  border: 1px solid var(--accent-purple-border); color: var(--accent-purple); }

.kpi-value {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  font-family: 'JetBrains Mono', monospace;
  line-height: 1;
  color: var(--text-primary);
}

.kpi-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.kpi-hint {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-top: 6px;
}

/* ============================================================
   Dashboard Filter Tab Strip
   ============================================================ */
.dashboard-tab-strip {
  display: flex;
  gap: 4px;
  padding: 12px 16px 0;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
}

.btn-dash-tab {
  padding: 7px 12px;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  border: 1px solid transparent;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: -1px;
}

.btn-dash-tab:hover {
  color: var(--text-primary);
  background: var(--bg-surface-hover);
}

.btn-dash-tab.active {
  color: var(--text-primary);
  border-bottom-color: var(--accent-action);
  background: transparent;
}

/* ============================================================
   Tables
   ============================================================ */
.table {
  color: var(--text-primary);
  margin-bottom: 0;
  font-size: 0.855rem;
}

.table > :not(caption) > * > * {
  background-color: transparent;
  border-bottom-color: var(--border-subtle);
  padding: 11px 16px;
}

.table > thead > * > * {
  border-bottom-color: var(--border-color);
}

.table-hover > tbody > tr:hover > * {
  background-color: var(--bg-surface-hover);
}

.table th {
  color: var(--text-tertiary);
  font-weight: 600;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  border-bottom-width: 1px;
  white-space: nowrap;
}

.table td { vertical-align: middle; }

.table-sm > :not(caption) > * > * { padding: 8px 14px; }

/* ============================================================
   Badges
   ============================================================ */
.badge {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.7rem;
  letter-spacing: 0.01em;
  border-radius: 20px;
  padding: 0.28em 0.65em;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.badge-ok     { background: var(--accent-ok-bg);     color: var(--accent-ok);     border: 1px solid var(--accent-ok-border); }
.badge-warn   { background: var(--accent-warn-bg);   color: var(--accent-warn);   border: 1px solid var(--accent-warn-border); }
.badge-error  { background: var(--accent-error-bg);  color: var(--accent-error);  border: 1px solid var(--accent-error-border); }
.badge-info   { background: var(--accent-action-bg); color: var(--accent-action); border: 1px solid var(--accent-action-border); }
.badge-purple { background: var(--accent-purple-bg); color: var(--accent-purple); border: 1px solid var(--accent-purple-border); }
.badge-neutral { background: var(--bg-surface-2);   color: var(--text-secondary); border: 1px solid var(--border-color); }

/* ============================================================
   Forms & Inputs
   ============================================================ */
.form-control,
.form-select {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  font-size: 0.855rem;
  padding: 8px 12px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus,
.form-select:focus {
  background-color: var(--bg-input);
  color: var(--text-primary);
  border-color: var(--accent-action);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.18);
  outline: none;
}

.form-control::placeholder { color: var(--text-tertiary); }

.form-control[readonly],
.form-control:disabled {
  background-color: var(--bg-surface-2);
  color: var(--text-secondary);
  opacity: 1;
}

.form-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 5px;
  letter-spacing: 0.01em;
}

.form-text { color: var(--text-tertiary); font-size: 0.74rem; }

.form-check-input {
  background-color: var(--bg-input);
  border-color: var(--border-color);
}
.form-check-input:checked {
  background-color: var(--accent-action);
  border-color: var(--accent-action);
}
.form-check-label { font-size: 0.855rem; color: var(--text-secondary); }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  font-weight: 600;
  font-size: 0.825rem;
  border-radius: var(--radius-md);
  padding: 8px 14px;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.btn-sm { padding: 5px 10px; font-size: 0.775rem; gap: 4px; }

.btn-primary {
  background-color: var(--accent-action);
  border-color: var(--accent-action);
  color: #fff;
}
.btn-primary:hover { background-color: #2563EB; border-color: #2563EB; color: #fff; }

.btn-outline-light {
  border-color: var(--border-color);
  color: var(--text-secondary);
  background: transparent;
}
.btn-outline-light:hover {
  background-color: var(--bg-surface-hover);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-outline-danger {
  border-color: var(--accent-error-border);
  color: var(--accent-error);
  background: transparent;
}
.btn-outline-danger:hover {
  background-color: var(--accent-error-bg);
  border-color: var(--accent-error-border);
  color: var(--accent-error);
}

.btn-outline-success {
  border-color: var(--accent-ok-border);
  color: var(--accent-ok);
  background: transparent;
}
.btn-outline-success:hover { background-color: var(--accent-ok-bg); color: var(--accent-ok); }

.btn-danger { background-color: var(--accent-error); border-color: var(--accent-error); color: #fff; }
.btn-danger:hover { background-color: #DC2626; border-color: #DC2626; color: #fff; }

.btn-success { background-color: var(--accent-ok); border-color: var(--accent-ok); color: #fff; }
.btn-success:hover { background-color: #059669; border-color: #059669; color: #fff; }

/* ============================================================
   Nav Tabs
   ============================================================ */
.nav-tabs {
  border-bottom: 1px solid var(--border-color);
  gap: 2px;
}

.nav-tabs .nav-link {
  border: none;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.855rem;
  padding: 10px 16px;
  border-radius: 0;
  margin-bottom: -1px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-tabs .nav-link:hover {
  color: var(--text-primary);
  background: transparent;
  border-bottom-color: var(--border-color);
}

.nav-tabs .nav-link.active {
  color: var(--text-primary);
  border-bottom-color: var(--accent-action);
  background: transparent;
}

/* ============================================================
   List Group
   ============================================================ */
.list-group-item {
  background-color: transparent;
  border-color: var(--border-subtle);
  color: var(--text-primary);
  padding: 11px 16px;
  font-size: 0.855rem;
}

/* ============================================================
   Utilities
   ============================================================ */
.text-muted { color: var(--text-secondary) !important; }

.copy-btn {
  cursor: pointer;
  color: var(--text-tertiary);
  transition: color var(--transition-fast);
  padding: 0 2px;
}
.copy-btn:hover { color: var(--text-primary); }

.vr { background-color: var(--border-color); width: 1px; }

/* Danger Zone card */
.card.border-danger {
  border-color: var(--accent-error-border) !important;
}
.card.border-danger .card-header {
  color: var(--accent-error);
  border-bottom-color: var(--accent-error-border);
}

/* Input group button */
.input-group .btn { border-color: var(--border-color); }
.input-group .form-control { border-right: none; }
.input-group .btn { border-left: 1px solid var(--border-color); }

/* Alert tweaks */
.alert-info.card { border-left: 3px solid var(--accent-action); }

/* ============================================================
   Login Page (Standalone Full-Screen)
   ============================================================ */
body.login-page {
  min-height: 100vh;
  display: flex;
}

.login-split {
  display: flex;
  width: 100%;
  min-height: 100vh;
}

.login-brand-panel {
  flex: 0 0 400px;
  background: var(--bg-surface);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 48px 40px;
}

.login-brand-logo {
  width: 44px; height: 44px;
  background: var(--accent-action-bg);
  border: 1px solid var(--accent-action-border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-action);
  font-size: 1.3rem;
  margin-bottom: 20px;
}

.login-brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.login-brand-desc {
  font-size: 0.855rem;
  color: var(--text-tertiary);
  line-height: 1.7;
}

.login-brand-features {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
}

.login-brand-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.825rem;
  color: var(--text-secondary);
  padding: 7px 0;
  border-top: 1px solid var(--border-subtle);
}

.login-brand-features li:last-child { border-bottom: 1px solid var(--border-subtle); }

.login-brand-features li i {
  font-size: 0.95rem;
  flex-shrink: 0;
}

.login-form-panel {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 32px;
  background: var(--bg-main);
}

.login-form-box {
  width: 100%;
  max-width: 360px;
}

.login-form-title {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.login-form-subtitle {
  font-size: 0.82rem;
  color: var(--text-tertiary);
  margin-bottom: 28px;
}

@media (max-width: 768px) {
  .login-split { flex-direction: column; }
  .login-brand-panel { flex: none; padding: 28px 24px 20px; border-right: none; border-bottom: 1px solid var(--border-color); }
  .login-brand-features { display: none; }
  .login-form-panel { padding: 32px 24px; }
}

/* ============================================================
   Pagination footer
   ============================================================ */
.card-footer .btn { min-width: 90px; justify-content: center; }