/* DNS Monitoring Service — style.css */

/* === Design Tokens === */
:root {
  --bg:             #f5f7fb;
  --surface:        #ffffff;
  --border:         #e5e7eb;
  --text:           #111827;
  --muted:          #6b7280;

  --primary:        #4f6ef7;
  --primary-dark:   #3d5ce0;
  --primary-light:  #eff2fe;

  --success:        #16a34a;
  --success-bg:     #dcfce7;
  --warning:        #d97706;
  --warning-bg:     #fef3c7;
  --danger:         #dc2626;
  --danger-bg:      #fee2e2;
  --neutral:        #6b7280;
  --neutral-bg:     #f3f4f6;

  --sidebar-w:      220px;
  --sidebar-bg:     #1a1d2e;
  --sidebar-text:   #94a3b8;

  --radius:         10px;
  --shadow:         0 1px 3px rgba(0,0,0,.07), 0 2px 8px rgba(0,0,0,.05);
  --shadow-md:      0 4px 16px rgba(0,0,0,.08);
}

/* === Base === */
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 0.875rem;
}

/* === App Layout === */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* === Sidebar === */
.sidebar {
  width: var(--sidebar-w);
  background: var(--sidebar-bg);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 100;
  transition: transform .25s ease;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: 1.25rem 1.25rem 1rem;
  font-size: .9375rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -.01em;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.sidebar-brand i {
  font-size: 1.25rem;
  color: var(--primary);
}

.sidebar-nav {
  padding: .75rem .5rem;
  flex: 1;
  overflow-y: auto;
}

.sidebar-section-label {
  font-size: .65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: rgba(148,163,184,.5);
  padding: .75rem .75rem .25rem;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: .6rem .75rem;
  border-radius: 8px;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: .8125rem;
  font-weight: 500;
  transition: background .15s, color .15s;
  margin-bottom: 2px;
}
.sidebar-link i {
  font-size: 1rem;
  width: 18px;
  text-align: center;
  flex-shrink: 0;
}
.sidebar-link:hover {
  background: rgba(255,255,255,.06);
  color: #fff;
}
.sidebar-link.active {
  background: rgba(79,110,247,.18);
  color: #818cf8;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.4);
  z-index: 99;
}

/* === Main Wrapper === */
.main-wrapper {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* === Topbar === */
.topbar {
  height: 52px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 50;
  gap: .75rem;
}
.sidebar-toggle { display: none; }

/* === Main Content === */
.main-content {
  flex: 1;
  padding: 1.5rem;
}

/* === Page Header === */
.page-header {
  margin-bottom: 1.375rem;
}
.page-header h1 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--text);
  margin-bottom: 0;
}

/* === KPI Cards === */
.kpi-row {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(152px, 1fr));
  gap: .875rem;
  margin-bottom: 1.375rem;
}

.kpi-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: .9rem 1rem;
  display: flex;
  align-items: center;
  gap: .875rem;
  box-shadow: var(--shadow);
  border-left: 3px solid var(--border);
  transition: box-shadow .15s;
}
.kpi-card:hover { box-shadow: var(--shadow-md); }

.kpi-icon {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  flex-shrink: 0;
}
.kpi-card > div:last-child {
  min-width: 0;
}
.kpi-value {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
}
.kpi-label {
  font-size: .72rem;
  color: var(--muted);
  margin-top: 3px;
  line-height: 1.35;
  word-break: break-word;
}

.kpi-success { border-left-color: var(--success); }
.kpi-success .kpi-icon  { background: var(--success-bg); color: var(--success); }
.kpi-success .kpi-value { color: var(--success); }

.kpi-warning { border-left-color: var(--warning); }
.kpi-warning .kpi-icon  { background: var(--warning-bg); color: var(--warning); }
.kpi-warning .kpi-value { color: var(--warning); }

.kpi-danger { border-left-color: var(--danger); }
.kpi-danger .kpi-icon  { background: var(--danger-bg); color: var(--danger); }
.kpi-danger .kpi-value { color: var(--danger); }

.kpi-neutral { border-left-color: var(--neutral); }
.kpi-neutral .kpi-icon  { background: var(--neutral-bg); color: var(--neutral); }
.kpi-neutral .kpi-value { color: var(--text); }

.kpi-primary { border-left-color: var(--primary); }
.kpi-primary .kpi-icon  { background: var(--primary-light); color: var(--primary); }
.kpi-primary .kpi-value { color: var(--primary); }

/* === Tables === */
.table-responsive {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.table {
  background: var(--surface);
  margin-bottom: 0;
  font-size: .8125rem;
}

/* Light header — overrides table-dark */
.table > thead > tr > th,
thead.table-dark > tr > th,
.table-dark th {
  background: #f9fafb !important;
  color: var(--muted) !important;
  font-size: .7rem !important;
  font-weight: 600 !important;
  text-transform: uppercase;
  letter-spacing: .06em;
  border-bottom: 1px solid var(--border) !important;
  border-top: none !important;
  padding: .6rem .75rem !important;
  white-space: nowrap;
}

/* Remove stripes */
.table-striped > tbody > tr:nth-of-type(odd) > * {
  background-color: transparent;
  --bs-table-accent-bg: transparent;
}

/* Cell padding */
.table > :not(caption) > * > * {
  padding: .6rem .75rem;
  vertical-align: middle;
  border-color: var(--border);
}
.table-sm > :not(caption) > * > * {
  padding: .55rem .75rem;
}

/* Row separator */
.table tbody tr {
  border-bottom: 1px solid var(--border);
}
.table tbody tr:last-child {
  border-bottom: none;
}

/* Hover */
.table-hover > tbody > tr:hover > * {
  background-color: #f9fafb;
  --bs-table-accent-bg: #f9fafb;
}

/* === Cards View === */
.cards-view .card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform .15s, box-shadow .15s;
}
.cards-view .card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.cards-view .card-title {
  font-size: .875rem;
  font-weight: 600;
  color: var(--text);
}
.cards-view .card-body { padding: 1rem; }

/* === Status Row Classes === */
.status-ok      { background: var(--success-bg); color: #166534; border-radius: 4px; }
.status-warning { background: var(--warning-bg); color: #92400e; border-radius: 4px; }
.status-error   { background: var(--danger-bg);  color: #991b1b; border-radius: 4px; }
.status-gray    { background: var(--neutral-bg); color: #374151; border-radius: 4px; }

/* === View Controls === */
.view-controls {
  background: var(--surface);
  padding: .5rem .75rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: .5rem;
}

/* === Forms === */
.form-control, .form-select {
  border-color: var(--border);
  font-size: .8125rem;
}
.form-control:focus, .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,110,247,.12);
}
.form-control::placeholder { color: #9ca3af; }

/* === Buttons === */
.btn {
  font-size: .8125rem;
  font-weight: 500;
  border-radius: 7px;
}
.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
}
.btn-primary:hover, .btn-primary:focus {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
}
.btn-primary:focus {
  box-shadow: 0 0 0 3px rgba(79,110,247,.25);
}

/* === Nav Tabs === */
.nav-tabs {
  border-bottom: 2px solid var(--border);
  gap: .1rem;
}
.nav-tabs .nav-link {
  color: var(--muted);
  font-size: .8125rem;
  font-weight: 500;
  padding: .45rem .875rem;
  border: none;
  border-radius: 6px 6px 0 0;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color .15s;
}
.nav-tabs .nav-link:hover {
  color: var(--text);
  background: transparent;
  border-color: transparent;
}
.nav-tabs .nav-link.active {
  color: var(--primary);
  background: transparent;
  border-bottom-color: var(--primary);
  font-weight: 600;
}

/* === Progress === */
.progress {
  height: 6px;
  border-radius: 3px;
  background: var(--border);
}
.progress-bar {
  background: var(--primary);
  border-radius: 3px;
}

/* === Detail Cards === */
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card-title {
  font-size: .9375rem;
  font-weight: 600;
}

/* === Footer === */
.app-footer {
  padding: .625rem 1.5rem;
  border-top: 1px solid var(--border);
  font-size: .75rem;
  color: var(--muted);
  background: var(--surface);
  text-align: center;
}

/* === Misc === */
.cursor-pointer { cursor: pointer; }
.copyable { cursor: pointer; }
.copyable:hover { background: var(--success-bg) !important; }

/* === Mobile === */
@media (max-width: 991.98px) {
  .sidebar {
    transform: translateX(calc(-1 * var(--sidebar-w)));
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-md);
  }
  .sidebar-overlay.open { display: block; }
  .main-wrapper { margin-left: 0; }
  .sidebar-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: .25rem .4rem;
    color: var(--muted);
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
  }
  .main-content { padding: 1rem; }
  .kpi-row { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); }
}

/* === Sidebar disabled (login screen) === */
.sidebar-disabled .sidebar-link { pointer-events: none; opacity: 0.4; }