/* ── Vivaldi Design System ─────────────────────────────── */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: rgba(255,255,255,0.04);
  --bg-card-hover: rgba(255,255,255,0.07);
  --bg-glass: rgba(255,255,255,0.06);
  --border: rgba(255,255,255,0.08);
  --border-hover: rgba(255,255,255,0.15);
  --text-primary: #e8e8ef;
  --text-secondary: #8b8b9e;
  --text-dim: #55556a;
  --accent: #7C3AED;
  --accent-light: #A78BFA;
  --cyan: #06B6D4;
  --green: #10B981;
  --yellow: #F59E0B;
  --red: #EF4444;
  --orange: #F97316;
  --sidebar-w: 240px;
  --sidebar-collapsed: 64px;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.2s cubic-bezier(0.4,0,0.2,1);
  --font: 'Inter', -apple-system, sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

/* ── Login ────────────────────────────────────────────── */
.login-screen {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
  background: radial-gradient(ellipse at 30% 20%, rgba(124,58,237,0.15), transparent 60%),
              radial-gradient(ellipse at 70% 80%, rgba(6,182,212,0.1), transparent 60%),
              var(--bg-primary);
}
.login-card {
  background: var(--bg-glass);
  backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 48px 40px;
  text-align: center;
  width: 380px; max-width: 90vw;
  animation: fadeUp 0.5s ease;
}
.login-logo { margin-bottom: 16px; }
.login-title { font-size: 28px; font-weight: 700; letter-spacing: 4px; background: linear-gradient(135deg, var(--accent-light), var(--cyan)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.login-subtitle { color: var(--text-secondary); font-size: 13px; margin-top: 4px; margin-bottom: 32px; }
.login-form input {
  width: 100%; padding: 14px 16px; background: rgba(255,255,255,0.05);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text-primary); font-size: 14px; font-family: var(--font);
  outline: none; transition: var(--transition);
}
.login-form input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(124,58,237,0.2); }
.login-form button {
  width: 100%; margin-top: 16px; padding: 14px;
  background: linear-gradient(135deg, var(--accent), #5B21B6);
  border: none; border-radius: var(--radius-sm);
  color: #fff; font-size: 14px; font-weight: 600; font-family: var(--font);
  cursor: pointer; transition: var(--transition);
}
.login-form button:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(124,58,237,0.4); }
.login-error { color: var(--red); font-size: 13px; margin-top: 12px; min-height: 20px; }

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

/* ── Sidebar ──────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w); min-height: 100vh;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  position: fixed; left: 0; top: 0; bottom: 0; z-index: 100;
  transition: width var(--transition);
}
.sidebar-header {
  display: flex; align-items: center; gap: 10px;
  padding: 20px 16px; border-bottom: 1px solid var(--border);
}
.sidebar-title { font-size: 16px; font-weight: 700; letter-spacing: 3px; background: linear-gradient(135deg, var(--accent-light), var(--cyan)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.sidebar-toggle { display: none; background: none; border: none; color: var(--text-secondary); cursor: pointer; margin-left: auto; padding: 4px; }
.sidebar-nav { flex: 1; padding: 8px; display: flex; flex-direction: column; gap: 2px; }
.sidebar-footer { padding: 8px; border-top: 1px solid var(--border); }

.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; border-radius: var(--radius-sm);
  background: none; border: none; color: var(--text-secondary);
  font-size: 13px; font-family: var(--font); font-weight: 500;
  cursor: pointer; transition: var(--transition); width: 100%; text-align: left;
}
.nav-item:hover { background: var(--bg-card-hover); color: var(--text-primary); }
.nav-item.active { background: rgba(124,58,237,0.15); color: var(--accent-light); }
.nav-item.logout:hover { color: var(--red); }
.nav-badge { background: var(--red); color: #fff; font-size: 10px; font-weight: 700; padding: 2px 6px; border-radius: 10px; margin-left: auto; }

/* ── Main Content ─────────────────────────────────────── */
.main-content { flex: 1; margin-left: var(--sidebar-w); padding: 24px 28px; transition: margin-left var(--transition); }

.view { display: none; animation: fadeUp 0.3s ease; }
.view.active { display: block; }

.view-header { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; flex-wrap: wrap; }
.view-header h1 { font-size: 24px; font-weight: 700; }
.header-actions { display: flex; gap: 8px; margin-left: auto; }

/* ── Buttons ──────────────────────────────────────────── */
.btn-primary, .btn-secondary, .btn-danger, .btn-refresh, .btn-back {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 500; font-family: var(--font);
  cursor: pointer; transition: var(--transition); border: none;
}
.btn-primary { background: linear-gradient(135deg, var(--accent), #5B21B6); color: #fff; }
.btn-primary:hover { box-shadow: 0 4px 16px rgba(124,58,237,0.4); transform: translateY(-1px); }
.btn-secondary { background: var(--bg-card); border: 1px solid var(--border); color: var(--text-primary); }
.btn-secondary:hover { border-color: var(--border-hover); background: var(--bg-card-hover); }
.btn-danger { background: rgba(239,68,68,0.15); color: var(--red); border: 1px solid rgba(239,68,68,0.2); }
.btn-danger:hover { background: rgba(239,68,68,0.25); }
.btn-refresh, .btn-back { background: none; border: none; color: var(--text-secondary); padding: 8px; border-radius: 50%; }
.btn-refresh:hover, .btn-back:hover { background: var(--bg-card-hover); color: var(--text-primary); }
.btn-sm { padding: 6px 10px; font-size: 12px; }

/* ── Summary Bar ──────────────────────────────────────── */
.summary-bar { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin-bottom: 24px; }
.summary-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; transition: var(--transition);
}
.summary-card:hover { border-color: var(--border-hover); }
.summary-label { font-size: 11px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 1px; font-weight: 600; }
.summary-value { font-size: 28px; font-weight: 700; margin-top: 4px; }
.summary-value.green { color: var(--green); }
.summary-value.yellow { color: var(--yellow); }
.summary-value.red { color: var(--red); }
.summary-value.cyan { color: var(--cyan); }

/* ── Service Cards ────────────────────────────────────── */
.services-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 12px; }
.service-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; cursor: pointer; transition: var(--transition);
  position: relative; overflow: hidden;
}
.service-card:hover { border-color: var(--border-hover); background: var(--bg-card-hover); transform: translateY(-2px); }
.service-card::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--accent); border-radius: 0 2px 2px 0;
}
.service-card.healthy::before { background: var(--green); }
.service-card.degraded::before { background: var(--yellow); }
.service-card.down::before { background: var(--red); }
.service-card.stopped::before { background: var(--text-dim); }
.service-card.unknown::before { background: var(--text-secondary); }

.svc-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.svc-name { font-size: 14px; font-weight: 600; }
.svc-display-name { font-size: 11px; color: var(--text-secondary); margin-top: 1px; }
.svc-status { display: flex; align-items: center; gap: 6px; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; }
.status-dot.healthy { background: var(--green); box-shadow: 0 0 8px var(--green); }
.status-dot.degraded { background: var(--yellow); box-shadow: 0 0 8px var(--yellow); }
.status-dot.down { background: var(--red); box-shadow: 0 0 8px var(--red); animation: pulse 1.5s infinite; }
.status-dot.stopped { background: var(--text-dim); }
.status-dot.unknown { background: var(--text-secondary); }

.svc-stats { display: flex; gap: 16px; margin-top: 8px; }
.svc-stat { font-size: 12px; color: var(--text-secondary); }
.svc-stat strong { color: var(--text-primary); font-weight: 600; }
.svc-domain { font-size: 11px; color: var(--cyan); margin-top: 6px; opacity: 0.8; }
.svc-actions { display: flex; gap: 4px; margin-top: 10px; }

/* ── Detail View ──────────────────────────────────────── */
.detail-content { display: grid; gap: 16px; }
.detail-section { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.detail-section h3 { font-size: 14px; font-weight: 600; margin-bottom: 12px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 1px; }
.detail-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.detail-field label { font-size: 11px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.5px; }
.detail-field .value { font-size: 14px; font-weight: 500; margin-top: 2px; }

/* ── Logs Viewer ──────────────────────────────────────── */
.logs-container {
  background: #08080d; border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-family: 'JetBrains Mono', 'Fira Code', monospace; font-size: 12px;
  max-height: 400px; overflow-y: auto; padding: 12px;
}
.log-line { padding: 2px 0; line-height: 1.6; word-break: break-all; }
.log-line.error { color: var(--red); }
.log-line.warn { color: var(--yellow); }
.log-line.debug { color: var(--text-dim); }
.log-line .ts { color: var(--text-dim); margin-right: 8px; }

/* ── Charts ───────────────────────────────────────────── */
.chart-container { position: relative; height: 180px; background: rgba(0,0,0,0.3); border-radius: var(--radius-sm); overflow: hidden; }
.chart-canvas { width: 100%; height: 100%; }

/* ── Gateway Cards ────────────────────────────────────── */
.gateway-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(360px, 1fr)); gap: 12px; }
.route-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; transition: var(--transition);
}
.route-card:hover { border-color: var(--border-hover); }
.route-card.readonly { opacity: 0.8; }
.route-domain { font-size: 15px; font-weight: 600; color: var(--cyan); }
.route-upstream { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }
.route-badges { display: flex; gap: 6px; margin-top: 8px; flex-wrap: wrap; }
.route-badge { font-size: 10px; padding: 3px 8px; border-radius: 4px; background: rgba(255,255,255,0.06); color: var(--text-secondary); font-weight: 500; text-transform: uppercase; letter-spacing: 0.5px; }
.route-badge.ssl { background: rgba(16,185,129,0.15); color: var(--green); }
.route-badge.ws { background: rgba(124,58,237,0.15); color: var(--accent-light); }
.route-badge.complex { background: rgba(249,115,22,0.15); color: var(--orange); }
.route-actions { display: flex; gap: 6px; margin-top: 12px; }

/* ── Stacks ───────────────────────────────────────────── */
.stacks-list { display: grid; gap: 12px; }
.stack-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; transition: var(--transition);
}
.stack-card:hover { border-color: var(--border-hover); }
.stack-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.stack-name { font-size: 16px; font-weight: 600; }
.stack-desc { font-size: 12px; color: var(--text-secondary); margin-bottom: 12px; }
.stack-services { display: flex; gap: 6px; flex-wrap: wrap; }
.stack-svc-tag { font-size: 11px; padding: 4px 10px; background: rgba(255,255,255,0.05); border-radius: 6px; color: var(--text-secondary); }
.stack-status-bar { display: flex; gap: 12px; margin-top: 12px; }
.stack-stat { font-size: 12px; color: var(--text-secondary); }

/* ── Alerts ───────────────────────────────────────────── */
.alerts-list { display: flex; flex-direction: column; gap: 8px; }
.alert-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 14px 16px; display: flex; gap: 12px; align-items: flex-start; transition: var(--transition);
}
.alert-card:hover { border-color: var(--border-hover); }
.alert-icon { width: 10px; height: 10px; border-radius: 50%; margin-top: 4px; flex-shrink: 0; }
.alert-icon.critical { background: var(--red); box-shadow: 0 0 8px var(--red); }
.alert-icon.warning { background: var(--yellow); box-shadow: 0 0 8px var(--yellow); }
.alert-icon.info { background: var(--green); box-shadow: 0 0 8px var(--green); }
.alert-body { flex: 1; }
.alert-title { font-size: 13px; font-weight: 600; }
.alert-message { font-size: 12px; color: var(--text-secondary); margin-top: 2px; }
.alert-meta { font-size: 11px; color: var(--text-dim); margin-top: 4px; }

.filter-group { display: flex; gap: 4px; margin-left: auto; }
.filter-btn { padding: 6px 12px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text-secondary); font-size: 12px; font-family: var(--font); cursor: pointer; transition: var(--transition); }
.filter-btn:hover { border-color: var(--border-hover); }
.filter-btn.active { background: rgba(124,58,237,0.15); border-color: var(--accent); color: var(--accent-light); }

/* ── Settings ─────────────────────────────────────────── */
.settings-form { max-width: 600px; }
.settings-group { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 12px; }
.settings-group h3 { font-size: 13px; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 16px; }
.setting-row { display: flex; align-items: center; justify-content: space-between; padding: 8px 0; }
.setting-row + .setting-row { border-top: 1px solid var(--border); }
.setting-label { font-size: 13px; }
.setting-input { padding: 8px 12px; background: rgba(255,255,255,0.05); border: 1px solid var(--border); border-radius: 6px; color: var(--text-primary); font-size: 13px; font-family: var(--font); width: 120px; text-align: right; outline: none; }
.setting-input:focus { border-color: var(--accent); }

/* Toggle Switch */
.toggle { position: relative; width: 44px; height: 24px; cursor: pointer; }
.toggle input { display: none; }
.toggle-slider { position: absolute; inset: 0; background: rgba(255,255,255,0.1); border-radius: 12px; transition: var(--transition); }
.toggle-slider::before { content: ''; position: absolute; width: 18px; height: 18px; left: 3px; bottom: 3px; background: var(--text-secondary); border-radius: 50%; transition: var(--transition); }
.toggle input:checked + .toggle-slider { background: var(--accent); }
.toggle input:checked + .toggle-slider::before { transform: translateX(20px); background: #fff; }

/* ── Modal ────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center; z-index: 1000;
  animation: fadeIn 0.2s ease;
}
.modal-card {
  background: var(--bg-secondary); border: 1px solid var(--border); border-radius: 16px;
  width: 480px; max-width: 92vw; max-height: 85vh; overflow-y: auto;
  animation: fadeUp 0.3s ease;
}
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; border-bottom: 1px solid var(--border); }
.modal-header h2 { font-size: 16px; font-weight: 600; }
.modal-close { background: none; border: none; color: var(--text-secondary); cursor: pointer; padding: 4px; border-radius: 6px; }
.modal-close:hover { background: var(--bg-card-hover); color: var(--text-primary); }
.modal-body { padding: 24px; }
.modal-body .form-group { margin-bottom: 16px; }
.modal-body label { display: block; font-size: 12px; color: var(--text-secondary); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.5px; }
.modal-body input, .modal-body select { width: 100%; padding: 10px 12px; background: rgba(255,255,255,0.05); border: 1px solid var(--border); border-radius: 6px; color: var(--text-primary); font-size: 13px; font-family: var(--font); outline: none; }
.modal-body input:focus { border-color: var(--accent); }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 20px; }

/* ── Toast ────────────────────────────────────────────── */
.toast-container { position: fixed; bottom: 24px; right: 24px; z-index: 2000; display: flex; flex-direction: column; gap: 8px; }
.toast {
  padding: 12px 20px; border-radius: var(--radius-sm);
  background: var(--bg-secondary); border: 1px solid var(--border);
  font-size: 13px; min-width: 280px; animation: slideIn 0.3s ease;
  display: flex; align-items: center; gap: 8px;
}
.toast.success { border-color: rgba(16,185,129,0.3); }
.toast.error { border-color: rgba(239,68,68,0.3); }

/* ── Animations ───────────────────────────────────────── */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideIn { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: translateX(0); } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

/* ── Scrollbar ────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* ── Mobile ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { width: var(--sidebar-w); transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-toggle { display: block; }
  .main-content { margin-left: 0; padding: 16px; }
  .view-header h1 { font-size: 20px; }
  .services-grid { grid-template-columns: 1fr; }
  .gateway-grid { grid-template-columns: 1fr; }
  .summary-bar { grid-template-columns: repeat(2, 1fr); }
  .detail-grid { grid-template-columns: 1fr; }
  .filter-group { margin-left: 0; width: 100%; overflow-x: auto; }

  /* Mobile hamburger button */
  .mobile-menu-btn {
    position: fixed; top: 16px; left: 16px; z-index: 99;
    background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm);
    padding: 8px; color: var(--text-primary); cursor: pointer;
  }
}