:root {
  --bg-app: #0b111b;
  --bg-surface: #121a29;
  --bg-elevated: #172235;
  --bg-hover: #1d2a40;
  --border: #25334d;
  --border-soft: #1b273b;
  --text-primary: #eef3fb;
  --text-secondary: #9fb0cb;
  --text-muted: #6f82a2;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-soft: rgba(59, 130, 246, 0.16);
  --green: #22c55e;
  --green-soft: rgba(34, 197, 94, 0.16);
  --amber: #f59e0b;
  --amber-soft: rgba(245, 158, 11, 0.16);
  --red: #ef4444;
  --red-soft: rgba(239, 68, 68, 0.16);
  --cyan: #06b6d4;
  --purple: #a855f7;
  --radius: 12px;
  --radius-sm: 8px;
  --font-sans: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "Cascadia Code", "Consolas", "Courier New", monospace;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg-app);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.app-shell {
  display: grid;
  grid-template-columns: 248px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: #0e1522;
  border-right: 1px solid var(--border-soft);
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 8px;
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, #2563eb, #06b6d4);
  display: grid;
  place-items: center;
  color: #fff;
  flex-shrink: 0;
}

.brand-icon svg {
  width: 21px;
  height: 21px;
}

.brand-title {
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.02em;
}

.brand-sub {
  font-size: 11px;
  color: var(--text-muted);
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 11px;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

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

.nav-item.active {
  background: var(--accent-soft);
  border-color: rgba(59, 130, 246, 0.35);
  color: #93c5fd;
  font-weight: 600;
}

.nav-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: currentColor;
  opacity: 0.7;
}

.sidebar-footer {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--border-soft);
}

.source-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-secondary);
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 7px 10px;
}

.status-led {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--text-muted);
  flex-shrink: 0;
}

.source-pill.ok .status-led { background: var(--green); box-shadow: 0 0 8px rgba(34, 197, 94, 0.5); }
.source-pill.warn .status-led { background: var(--amber); }
.source-pill.err .status-led { background: var(--red); }

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

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 26px;
  border-bottom: 1px solid var(--border-soft);
  background: rgba(11, 17, 27, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.topbar-left h1 {
  margin: 0 0 4px 0;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.topbar-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.view-container {
  padding: 22px 26px 36px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.alert-banner {
  margin: 14px 26px 0;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(245, 158, 11, 0.4);
  background: rgba(245, 158, 11, 0.1);
  color: #fde68a;
  font-size: 13px;
}

.alert-banner.error {
  border-color: rgba(239, 68, 68, 0.45);
  background: rgba(239, 68, 68, 0.12);
  color: #fecaca;
}

.hidden {
  display: none !important;
}

/* Badges & Buttons */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
  border: 1px solid transparent;
}

.badge-neutral { background: var(--bg-elevated); color: var(--text-secondary); border-color: var(--border); }
.badge-green { background: var(--green-soft); color: #86efac; border-color: rgba(34, 197, 94, 0.35); }
.badge-amber { background: var(--amber-soft); color: #fcd34d; border-color: rgba(245, 158, 11, 0.35); }
.badge-red { background: var(--red-soft); color: #fca5a5; border-color: rgba(239, 68, 68, 0.35); }
.badge-blue { background: var(--accent-soft); color: #93c5fd; border-color: rgba(59, 130, 246, 0.35); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
}

.btn:hover:not(:disabled) { background: var(--bg-hover); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }
.btn-danger { background: #dc2626; border-color: #dc2626; color: #fff; }
.btn-danger:hover:not(:disabled) { background: #b91c1c; }
.btn-amber { background: rgba(245, 158, 11, 0.2); border-color: rgba(245, 158, 11, 0.45); color: #fcd34d; }
.btn-amber:hover:not(:disabled) { background: rgba(245, 158, 11, 0.3); }
.btn-ghost { background: transparent; border-color: var(--border); color: var(--text-secondary); }
.btn-sm { padding: 5px 10px; font-size: 12px; }

/* Grid & Cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.card-title {
  margin: 0;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text-primary);
}

.kpi-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.kpi-value {
  font-size: 25px;
  font-weight: 700;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}

.kpi-sub {
  font-size: 12.5px;
  color: var(--text-secondary);
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.muted-text {
  color: var(--text-muted);
  font-size: 12.5px;
}

/* Progress bars */
.progress-track {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: #0c121e;
  border: 1px solid var(--border-soft);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 999px;
  background: var(--accent);
  transition: width 0.35s ease;
}

.progress-fill.green { background: var(--green); }
.progress-fill.amber { background: var(--amber); }
.progress-fill.red { background: var(--red); }
.progress-fill.cyan { background: var(--cyan); }

/* Tables */
.table-wrap {
  width: 100%;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th {
  text-align: left;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  font-weight: 600;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--border-soft);
  color: var(--text-secondary);
  vertical-align: middle;
}

tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.text-right { text-align: right; }

/* Charts */
.donut-layout {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
}

.legend-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
  min-width: 180px;
}

.legend-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 13px;
}

.legend-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.swatch {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  flex-shrink: 0;
}

.chart-box {
  width: 100%;
  overflow-x: auto;
  position: relative;
}

.chart-tooltip {
  position: absolute;
  pointer-events: none;
  background: #0a0f18;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 12px;
  color: var(--text-primary);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.45);
  z-index: 10;
  white-space: nowrap;
}

/* Mail Workspace */
.mail-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 16px;
  min-height: 620px;
}

.account-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.account-card {
  padding: 11px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-soft);
  background: var(--bg-elevated);
  cursor: pointer;
  text-align: left;
  color: var(--text-primary);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.account-card:hover { background: var(--bg-hover); }
.account-card.active {
  border-color: var(--accent);
  background: rgba(59, 130, 246, 0.12);
}

.account-email {
  font-weight: 600;
  font-size: 13px;
  word-break: break-all;
}

.account-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  margin-top: 6px;
  font-size: 11.5px;
  color: var(--text-muted);
}

.tabs-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.tab-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.chip {
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
}

.chip:hover, .chip.active {
  border-color: var(--accent);
  color: #93c5fd;
  background: var(--accent-soft);
}

.mail-split {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 14px;
  min-height: 460px;
}

.mail-list {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  background: #0d1420;
  overflow-y: auto;
  max-height: 540px;
}

.mail-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px;
  border-bottom: 1px solid var(--border-soft);
  cursor: pointer;
}

.mail-row:hover { background: rgba(255, 255, 255, 0.03); }
.mail-row.selected { background: rgba(59, 130, 246, 0.14); }
.mail-row.unread .mail-subject { color: #fff; font-weight: 700; }

.mail-row-content {
  flex: 1;
  min-width: 0;
}

.mail-subject {
  font-size: 13px;
  color: var(--text-primary);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mail-subline {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 11.5px;
  color: var(--text-muted);
  margin-top: 3px;
}

.mail-preview {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  background: #0d1420;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 540px;
  overflow-y: auto;
}

.mail-iframe {
  width: 100%;
  min-height: 290px;
  border: 1px solid var(--border-soft);
  border-radius: 6px;
  background: #ffffff;
}

.mail-plain {
  white-space: pre-wrap;
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--text-secondary);
  background: var(--bg-surface);
  padding: 12px;
  border-radius: 6px;
  border: 1px solid var(--border-soft);
}

.bulk-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.35);
}

/* Forms */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.field label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.input, select {
  width: 100%;
  padding: 8px 11px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #0c121d;
  color: var(--text-primary);
  font-size: 13px;
  font-family: inherit;
}

.input:focus, select:focus {
  outline: none;
  border-color: var(--accent);
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
}

/* Modal & Toast */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(5, 8, 15, 0.72);
  display: grid;
  place-items: center;
  padding: 20px;
  z-index: 50;
}

.modal-card {
  width: 100%;
  max-width: 440px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.modal-card h3 { margin: 0; font-size: 16px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; }

.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 60;
}

.toast {
  padding: 11px 15px;
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 13px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.45);
  max-width: 380px;
}

.toast.ok { border-color: rgba(34, 197, 94, 0.5); }
.toast.err { border-color: rgba(239, 68, 68, 0.55); }

.loading-state {
  padding: 40px;
  text-align: center;
  color: var(--text-muted);
}

.login-backdrop {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at top, #14223a 0%, #080d16 70%);
  display: grid;
  place-items: center;
  padding: 20px;
  z-index: 100;
}

.login-card {
  width: 100%;
  max-width: 390px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 26px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.55);
}

@media (max-width: 1180px) {
  .kpi-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-2, .mail-split { grid-template-columns: 1fr; }
  .mail-layout { grid-template-columns: 1fr; }
}

@media (max-width: 820px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar {
    position: static;
    height: auto;
    padding: 14px;
    gap: 12px;
    border-right: none;
    border-bottom: 1px solid var(--border-soft);
  }
  .nav { flex-direction: row; flex-wrap: nowrap; overflow-x: auto; padding-bottom: 4px; }
  .nav-item { white-space: nowrap; width: auto; padding: 8px 12px; }
  .sidebar-footer { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .topbar { padding: 14px 16px; flex-wrap: wrap; }
  .view-container { padding: 16px 14px 28px; }
  .form-grid, .grid-3, .kpi-grid { grid-template-columns: 1fr; }
}