/* ============================================================
   Meridian — Apple TV Design System
   ============================================================ */
:root {
  --black: #000000;
  --surface: rgba(255,255,255,.06);
  --surface-hover: rgba(255,255,255,.10);
  --surface-active: rgba(255,255,255,.14);
  --glass: rgba(30,30,30,.72);
  --glass-border: rgba(255,255,255,.08);
  --white: #ffffff;
  --white-87: rgba(255,255,255,.87);
  --white-60: rgba(255,255,255,.60);
  --white-38: rgba(255,255,255,.38);
  --white-12: rgba(255,255,255,.12);
  --blue: #0a84ff;
  --blue-glow: rgba(10,132,255,.35);
  --green: #30d158;
  --green-dim: rgba(48,209,88,.15);
  --red: #ff453a;
  --red-dim: rgba(255,69,58,.15);
  --orange: #ff9f0a;
  --orange-dim: rgba(255,159,10,.15);
  --teal: #64d2ff;
  --teal-dim: rgba(100,210,255,.15);
  --purple: #bf5af2;
  --radius-xs: 8px;
  --radius-sm: 12px;
  --radius: 16px;
  --radius-lg: 22px;
  --radius-xl: 28px;
  --nav-h: 64px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 15px; scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, 'SF Pro Display', system-ui, sans-serif;
  background: var(--black);
  color: var(--white);
  line-height: 1.5;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, select { font-family: inherit; }
::-webkit-scrollbar { width: 0; background: transparent; }

.mono-subtle { color: var(--white-38); }

/* ============================================================
   Animations
   ============================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px) scale(.98); }
  to   { opacity: 1; transform: none; }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(.92); }
  to   { opacity: 1; transform: none; }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: .5; }
}
@keyframes glow {
  0%, 100% { box-shadow: 0 0 20px var(--blue-glow), 0 0 60px rgba(10,132,255,.1); }
  50%      { box-shadow: 0 0 30px var(--blue-glow), 0 0 80px rgba(10,132,255,.15); }
}
@keyframes toastIn {
  from { opacity: 0; transform: translateX(60px); }
  to   { opacity: 1; transform: none; }
}
@keyframes toastOut {
  from { opacity: 1; transform: none; }
  to   { opacity: 0; transform: translateX(60px); }
}

.fade-up { animation: fadeUp .5s cubic-bezier(.16,1,.3,1) both; }
.fade-in { animation: fadeIn .4s ease both; }
.scale-in { animation: scaleIn .4s cubic-bezier(.16,1,.3,1) both; }
.stagger-1 { animation-delay: .05s; }
.stagger-2 { animation-delay: .10s; }
.stagger-3 { animation-delay: .15s; }
.stagger-4 { animation-delay: .20s; }
.stagger-5 { animation-delay: .25s; }
.stagger-6 { animation-delay: .30s; }

/* ============================================================
   Login Page
   ============================================================ */
#page-login {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--black);
  position: relative;
  overflow: hidden;
}
#page-login.hidden { display: none; }

#page-login::before {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(10,132,255,.12) 0%, transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%, -55%);
  pointer-events: none;
}

.login-card {
  width: 100%;
  max-width: 380px;
  position: relative;
  z-index: 1;
  animation: fadeUp .7s cubic-bezier(.16,1,.3,1) both;
}

.login-brand { text-align: center; margin-bottom: 48px; }

.login-brand h1 {
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -.04em;
  background: linear-gradient(135deg, #fff 60%, rgba(255,255,255,.5));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.login-brand p {
  color: var(--white-38);
  font-size: .85rem;
  font-weight: 400;
  margin-top: 8px;
  letter-spacing: .02em;
}

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

.form-help {
  margin-top: 8px;
  font-size: .75rem;
  line-height: 1.5;
  color: var(--white-38);
}

.form-group label {
  display: block;
  font-size: .75rem;
  font-weight: 500;
  color: var(--white-38);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: .06em;
}

.form-input {
  width: 100%;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-size: .9rem;
  font-weight: 400;
  outline: none;
  transition: all .25s cubic-bezier(.16,1,.3,1);
}

.form-input:focus {
  background: var(--surface-hover);
  border-color: rgba(10,132,255,.5);
  box-shadow: 0 0 0 4px rgba(10,132,255,.1);
}

.form-input::placeholder { color: var(--white-38); }

.btn-login {
  width: 100%;
  padding: 14px;
  background: var(--blue);
  color: #fff;
  font-weight: 600;
  font-size: .9rem;
  border-radius: var(--radius-sm);
  margin-top: 8px;
  transition: all .25s cubic-bezier(.16,1,.3,1);
  position: relative;
  overflow: hidden;
}

.btn-login:hover {
  transform: scale(1.02);
  box-shadow: 0 4px 24px rgba(10,132,255,.4);
}

.btn-login:active { transform: scale(.98); }

.login-footer {
  text-align: center;
  margin-top: 32px;
  font-size: .8rem;
  color: var(--white-38);
}

.login-footer a {
  color: var(--blue);
  font-weight: 500;
  transition: opacity .2s;
}

.login-footer a:hover { opacity: .8; }

.login-note {
  display: block;
  margin-top: 10px;
  font-size: .75rem;
  line-height: 1.5;
}

.login-note.warn { color: var(--orange); }

/* ============================================================
   Top Navigation
   ============================================================ */
#app-shell { display: none; min-height: 100vh; background: var(--black); }
#app-shell.active { display: block; }

.topnav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: var(--glass);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--glass-border);
  z-index: 1000;
  display: flex;
  align-items: center;
  padding: 0 40px;
}

.topnav-brand {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -.03em;
  margin-right: 48px;
  flex-shrink: 0;
}

.topnav-links { display: flex; gap: 4px; }

.topnav-link {
  padding: 8px 18px;
  font-size: .85rem;
  font-weight: 500;
  color: var(--white-60);
  border-radius: var(--radius-xs);
  transition: all .25s cubic-bezier(.16,1,.3,1);
}

.topnav-link:hover { color: var(--white-87); background: var(--surface); }
.topnav-link.active { color: var(--white); background: var(--surface-hover); }

.topnav-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 16px;
}

.avatar-btn {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .78rem;
  font-weight: 600;
  transition: transform .2s;
}

.avatar-btn:hover { transform: scale(1.1); }

/* ============================================================
   Main Content
   ============================================================ */
.main {
  padding: calc(var(--nav-h) + 40px) 48px 60px;
  max-width: 1400px;
  margin: 0 auto;
}

.page { display: none; }
.page.active { display: block; }

.section-title {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -.03em;
  margin-bottom: 6px;
}

.section-sub {
  font-size: .875rem;
  color: var(--white-38);
  margin-bottom: 36px;
}

.live-indicator {
  font-size: .7rem;
  font-weight: 600;
  color: var(--green);
  animation: pulse 2s infinite;
  margin-left: 8px;
}

/* ============================================================
   Stats Cards
   ============================================================ */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all .3s cubic-bezier(.16,1,.3,1);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  opacity: 0;
  transition: opacity .3s;
}

.stat-card:hover {
  transform: translateY(-2px) scale(1.01);
  background: var(--surface-hover);
  border-color: rgba(255,255,255,.12);
}

.stat-card:hover::before { opacity: 1; }
.stat-card.c-blue::before  { background: var(--blue); }
.stat-card.c-green::before { background: var(--green); }
.stat-card.c-teal::before  { background: var(--teal); }
.stat-card.c-orange::before { background: var(--orange); }

.stat-icon-wrap {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.stat-icon-wrap svg {
  width: 22px; height: 22px;
  stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; fill: none;
}

.stat-icon-wrap.blue  { background: rgba(10,132,255,.15); }
.stat-icon-wrap.blue svg { stroke: var(--blue); }
.stat-icon-wrap.green { background: var(--green-dim); }
.stat-icon-wrap.green svg { stroke: var(--green); }
.stat-icon-wrap.teal  { background: var(--teal-dim); }
.stat-icon-wrap.teal svg { stroke: var(--teal); }
.stat-icon-wrap.orange { background: var(--orange-dim); }
.stat-icon-wrap.orange svg { stroke: var(--orange); }

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1;
}

.stat-number span {
  font-size: .85rem;
  font-weight: 500;
  color: var(--white-38);
}

.stat-title {
  font-size: .8rem;
  color: var(--white-38);
  margin-top: 8px;
  font-weight: 500;
}

/* ============================================================
   Glass Cards & Tables
   ============================================================ */
.glass-card {
  background: var(--surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.glass-card-header {
  padding: 20px 28px;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.glass-card-title {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -.01em;
}

.live-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  display: inline-block;
  margin-right: 8px;
  animation: pulse 2s infinite;
}

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

th {
  text-align: left;
  padding: 12px 28px;
  font-size: .7rem;
  font-weight: 600;
  color: var(--white-38);
  text-transform: uppercase;
  letter-spacing: .08em;
}

td {
  padding: 16px 28px;
  font-size: .85rem;
  color: var(--white-87);
  border-top: 1px solid rgba(255,255,255,.04);
  transition: background .2s;
}

tr:hover td { background: var(--surface); }

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .78rem;
  font-weight: 500;
}

.status-led {
  width: 7px; height: 7px;
  border-radius: 50%;
}

.status-led.on  { background: var(--green); box-shadow: 0 0 8px rgba(48,209,88,.5); }
.status-led.off { background: var(--white-38); }

.mono {
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: .78rem;
  color: var(--white-38);
}

.pill {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 100px;
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .02em;
}

.pill-blue   { background: rgba(10,132,255,.15); color: var(--blue); }
.pill-green  { background: var(--green-dim); color: var(--green); }
.pill-orange { background: var(--orange-dim); color: var(--orange); }

.latency { font-variant-numeric: tabular-nums; }
.latency.good { color: var(--green); }
.latency.mid  { color: var(--orange); }
.latency.bad  { color: var(--red); }

/* ============================================================
   Sites Management
   ============================================================ */
.page-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}

.toolbar-info { font-size: .85rem; color: var(--white-38); }
.toolbar-info strong { color: var(--white-87); }

.btn-add {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: var(--blue);
  color: #fff;
  font-weight: 600;
  font-size: .85rem;
  border-radius: 100px;
  transition: all .25s cubic-bezier(.16,1,.3,1);
}

.btn-add:hover {
  transform: scale(1.04);
  box-shadow: 0 4px 20px rgba(10,132,255,.4);
}

.btn-add:active { transform: scale(.97); }

.btn-add svg {
  width: 16px; height: 16px;
  stroke: currentColor; fill: none;
  stroke-width: 2; stroke-linecap: round; stroke-linejoin: round;
}

.sites-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 16px;
}

.site-card {
  background: var(--surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all .35s cubic-bezier(.16,1,.3,1);
}

.site-card:hover {
  transform: translateY(-4px) scale(1.015);
  border-color: rgba(255,255,255,.15);
  background: var(--surface-hover);
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
}

.site-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.site-name { font-size: 1.05rem; font-weight: 600; letter-spacing: -.01em; }

.site-rows { display: flex; flex-direction: column; gap: 14px; margin-bottom: 22px; }

.site-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-row-label { font-size: .78rem; color: var(--white-38); }

.progress-wrap { width: 100%; }

.progress-labels {
  display: flex;
  justify-content: space-between;
  font-size: .72rem;
  color: var(--white-38);
  margin-bottom: 8px;
}

.progress-track {
  width: 100%;
  height: 4px;
  background: rgba(255,255,255,.06);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 2px;
  transition: width .8s cubic-bezier(.16,1,.3,1);
}

.progress-fill.normal { background: var(--blue); }
.progress-fill.warn   { background: var(--orange); }
.progress-fill.danger { background: var(--red); }

.site-actions {
  display: flex;
  gap: 10px;
  padding-top: 20px;
  border-top: 1px solid var(--glass-border);
}

.btn-ghost {
  flex: 1;
  padding: 9px;
  font-size: .8rem;
  font-weight: 500;
  color: var(--white-60);
  background: var(--surface);
  border: none;
  border-radius: var(--radius-xs);
  text-align: center;
  transition: all .2s;
}

.btn-ghost:hover { background: var(--surface-hover); color: var(--white); }
.btn-ghost.danger:hover { background: var(--red-dim); color: var(--red); }

/* ============================================================
   Traffic Page
   ============================================================ */
.controls-row { display: flex; gap: 12px; margin-bottom: 28px; }

.form-select {
  padding: 10px 40px 10px 16px;
  background: var(--surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xs);
  color: var(--white-87);
  font-size: .85rem;
  font-weight: 500;
  outline: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23666' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  cursor: pointer;
  transition: all .2s;
}

.form-select:hover { background: var(--surface-hover); }
.form-select:focus { border-color: rgba(10,132,255,.5); box-shadow: 0 0 0 3px rgba(10,132,255,.1); }
.form-select option { background: #1a1a1a; color: var(--white); }

.modal-select {
  width: 100%;
  min-height: 50px;
  font-size: .9rem;
  border-radius: var(--radius-sm);
  color: var(--white);
  color-scheme: dark;
  background-color: var(--surface);
  background-position: right 18px center;
}

.modal-select option {
  background: #16181d;
  color: var(--white);
}

.chart-wrap {
  background: var(--surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 24px;
}

.chart-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}

.chart-head h3 { font-size: 1.05rem; font-weight: 600; }

.chart-legend { display: flex; gap: 20px; }

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .78rem;
  color: var(--white-60);
}

.legend-dot { width: 8px; height: 8px; border-radius: 50%; }
.legend-dot.in  { background: var(--blue); box-shadow: 0 0 6px rgba(10,132,255,.5); }
.legend-dot.out { background: var(--teal); box-shadow: 0 0 6px rgba(100,210,255,.5); }

canvas#trafficChart { width: 100% !important; height: 280px !important; }

.traffic-totals {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.total-card {
  background: var(--surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 24px 28px;
  transition: all .3s cubic-bezier(.16,1,.3,1);
}

.total-card:hover { transform: translateY(-2px); background: var(--surface-hover); }

.total-label {
  font-size: .75rem;
  color: var(--white-38);
  text-transform: uppercase;
  letter-spacing: .06em;
  font-weight: 500;
  margin-bottom: 10px;
}

.total-value {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1;
}

.total-value span { font-size: .8rem; font-weight: 500; color: var(--white-38); }

.total-delta { font-size: .75rem; color: var(--green); margin-top: 6px; font-weight: 500; }

/* ============================================================
   Diagnostics Page
   ============================================================ */
.diag-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
}

.btn-scan {
  padding: 10px 28px;
  background: transparent;
  border: 1px solid var(--blue);
  color: var(--blue);
  font-weight: 600;
  font-size: .85rem;
  border-radius: 100px;
  transition: all .25s cubic-bezier(.16,1,.3,1);
}

.btn-scan:hover {
  background: var(--blue);
  color: #fff;
  transform: scale(1.04);
  box-shadow: 0 4px 20px rgba(10,132,255,.3);
}

.btn-scan:active { transform: scale(.97); }
.btn-scan.running { background: var(--blue); color: #fff; animation: glow 1.5s infinite; }

.diag-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.diag-card {
  background: var(--surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all .3s cubic-bezier(.16,1,.3,1);
}

.diag-card-wide { grid-column: 1 / -1; }
.diag-card:hover { transform: translateY(-2px); background: var(--surface-hover); }

.diag-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}

.diag-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.diag-icon svg {
  width: 22px; height: 22px;
  stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; fill: none;
}

.diag-title { font-size: .95rem; font-weight: 600; }
.diag-subtitle { font-size: .72rem; color: var(--white-38); margin-top: 2px; }

.diag-rows { display: flex; flex-direction: column; gap: 10px; }

.diag-empty {
  color: var(--white-38);
  text-align: center;
  padding: 36px 12px;
}

.diag-note-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.diag-note-item {
  flex: 1 1 260px;
  padding: 14px 16px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--glass-border);
  background: rgba(255,255,255,.03);
  color: var(--white-60);
  font-size: .8rem;
  line-height: 1.6;
}

.diag-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 16px;
  background: rgba(255,255,255,.02);
  border-radius: var(--radius-xs);
  transition: background .2s;
}

.diag-row:hover { background: rgba(255,255,255,.04); }
.diag-key { font-size: .82rem; color: var(--white-60); }

.diag-val {
  font-size: .82rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.diag-wrap {
  max-width: 240px;
  text-align: right;
  word-break: break-all;
}

.diag-val.good { color: var(--green); }
.diag-val.warn { color: var(--orange); }
.diag-val.bad  { color: var(--red); }

/* ============================================================
   Modal
   ============================================================ */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.7);
  backdrop-filter: blur(8px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-overlay.active { display: flex; }

.modal {
  background: #1a1a1a;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 480px;
  animation: scaleIn .3s cubic-bezier(.16,1,.3,1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 28px 0;
}

.modal-header h3 { font-size: 1.1rem; font-weight: 600; }

.modal-close {
  width: 32px; height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  font-size: .85rem;
  transition: background .2s;
}

.modal-close:hover { background: var(--surface-hover); }

.modal-body { padding: 24px 28px; }
.modal-body .form-group { margin-bottom: 16px; }
.modal-body .form-group:last-child { margin-bottom: 0; }

.modal-footer {
  padding: 16px 28px 24px;
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

.btn-modal {
  padding: 10px 24px;
  border-radius: var(--radius-xs);
  font-size: .85rem;
  font-weight: 600;
  transition: all .2s;
}

.btn-modal.secondary { background: var(--surface); color: var(--white-60); }
.btn-modal.secondary:hover { background: var(--surface-hover); color: var(--white); }
.btn-modal.primary { background: var(--blue); color: #fff; }
.btn-modal.primary:hover { box-shadow: 0 4px 20px rgba(10,132,255,.4); }

/* ============================================================
   Toast Notifications
   ============================================================ */
#toast-container {
  position: fixed;
  top: calc(var(--nav-h) + 16px);
  right: 24px;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  font-size: .82rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: toastIn .3s cubic-bezier(.16,1,.3,1);
  min-width: 280px;
  border: 1px solid var(--glass-border);
  background: rgba(30,30,30,.9);
  backdrop-filter: blur(12px);
}

.toast.out { animation: toastOut .3s ease forwards; }
.toast.success { border-left: 3px solid var(--green); }
.toast.error   { border-left: 3px solid var(--red); }
.toast.info    { border-left: 3px solid var(--blue); }

/* ============================================================
   Mobile Bottom Bar
   ============================================================ */
.mobile-bar {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--glass);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-top: 1px solid var(--glass-border);
  z-index: 1000;
  padding: 8px 0 env(safe-area-inset-bottom, 10px);
}

.mobile-bar-inner { display: flex; justify-content: space-around; }

.mobile-tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 6px 16px;
  font-size: .62rem;
  font-weight: 500;
  color: var(--white-38);
  transition: color .2s;
}

.mobile-tab.active { color: var(--blue); }

.mobile-tab svg {
  width: 22px; height: 22px;
  stroke: currentColor; fill: none;
  stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .diag-grid { grid-template-columns: 1fr; }
  .traffic-totals { grid-template-columns: 1fr; }
  .main { padding-left: 28px; padding-right: 28px; }
}

@media (max-width: 768px) {
  .topnav { display: none; }
  .mobile-bar { display: block; }
  .main { padding: 24px 18px 110px; }
  .stats-row { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat-card { padding: 20px; }
  .stat-number { font-size: 1.5rem; }
  .sites-grid { grid-template-columns: 1fr; }
  .page-toolbar { flex-direction: column; gap: 14px; align-items: stretch; }
  .diag-toolbar { flex-wrap: wrap; }
  .controls-row { flex-wrap: wrap; }
  .section-title { font-size: 1.3rem; }
}

@media (max-width: 480px) {
  .stats-row { grid-template-columns: 1fr; }
  .login-brand h1 { font-size: 2rem; }
}