:root {
  font-family: "Segoe UI", Arial, sans-serif;
  line-height: 1.5;
  font-weight: 400;
  color: #18212b;
  background: #f4f6f8;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;

  --bg: #f4f6f8;
  --surface: #ffffff;
  --surface-soft: #f8fafb;
  --border: #dde4ea;
  --border-strong: #cbd5dd;
  --text: #18212b;
  --muted: #667380;
  --accent: #1f6feb;
  --accent-soft: #edf4ff;
  --success: #16794c;
  --warn: #9a6700;
  --danger: #b42318;
  --idle: #667380;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

#app,
.login-shell,
.app-shell {
  min-height: 100vh;
}

.login-shell {
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card,
.panel-card,
.sidebar,
.topbar {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.login-card {
  width: min(100%, 420px);
  padding: 28px;
  border-radius: 16px;
  display: grid;
  gap: 18px;
}

.eyebrow,
.section-label {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.login-card h1,
.brand-block h1,
.panel-card h2,
.topbar h2 {
  margin: 0;
  color: var(--text);
  font-size: 1.375rem;
  line-height: 1.25;
  font-weight: 600;
}

.lede,
.muted,
.attention-item p,
.sidebar-foot p,
.service-row span,
.user-cell span,
.table-foot {
  margin: 0;
  color: var(--muted);
}

.login-form,
.modal-form {
  display: grid;
  gap: 14px;
}

.login-form label,
.modal-form label {
  display: grid;
  gap: 6px;
  color: var(--text);
  font-size: 0.94rem;
}

.login-form input,
.modal-form input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
}

.login-form input:focus,
.modal-form input:focus {
  outline: 2px solid rgba(31, 111, 235, 0.18);
  border-color: var(--accent);
}

.login-form button,
.action-row button,
.modal-form button,
.copy-link,
.danger-link,
.nav-item,
.ghost-button {
  transition:
    background-color 0.15s ease,
    border-color 0.15s ease,
    color 0.15s ease;
}

.login-form button,
.action-row button,
.modal-form button,
.header-actions button {
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #ffffff;
  font-weight: 600;
}

.secondary {
  border-color: var(--border-strong) !important;
  background: var(--surface) !important;
  color: var(--text) !important;
}

.login-form button:hover,
.action-row button:hover,
.modal-form button:hover,
.header-actions button:hover,
.ghost-button:hover,
.copy-link:hover,
.danger-link:hover {
  filter: brightness(0.98);
}

.form-error {
  margin: 0;
  color: var(--danger);
  font-size: 0.92rem;
}

.login-note {
  display: grid;
  gap: 4px;
  padding-top: 6px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

.app-shell {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 16px;
  padding: 16px;
}

.sidebar {
  border-radius: 14px;
  padding: 20px;
  display: grid;
  gap: 20px;
  align-self: start;
  position: sticky;
  top: 16px;
}

.brand-block {
  display: grid;
  gap: 4px;
}

.brand-block h1 {
  font-size: 1.12rem;
}

.nav-list {
  display: grid;
  gap: 8px;
}

.nav-item {
  padding: 10px 12px;
  border-radius: 8px;
  text-align: left;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  display: block;
  font-weight: 500;
}

.nav-item.active {
  background: var(--accent-soft);
  border-color: #cfe0ff;
}

.sidebar-foot {
  display: grid;
  gap: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.content-shell {
  display: grid;
  gap: 16px;
}

.topbar {
  padding: 14px 18px;
  border-radius: 14px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}

.topbar-meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.88rem;
}

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

.users-grid {
  grid-template-columns: 1fr;
}

.system-grid {
  grid-template-columns: minmax(280px, 1fr) minmax(0, 2fr);
}

.panel-card {
  border-radius: 14px;
  padding: 18px;
  display: grid;
  gap: 14px;
  min-width: 0;
}

.hero-card {
  background: var(--surface);
}

.hero-status,
.action-row,
.stat-stack,
.attention-item,
.service-row,
.system-stats {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.metric {
  font-size: 2rem;
  line-height: 1;
  color: var(--text);
  font-weight: 600;
}

.sparkline-list,
.attention-list,
.service-list {
  display: grid;
  gap: 10px;
}

.sparkline-row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) 88px;
  gap: 10px;
  align-items: center;
  font-size: 0.92rem;
  color: var(--muted);
}

.sparkline-track {
  height: 8px;
  border-radius: 999px;
  background: #edf1f4;
  overflow: hidden;
}

.sparkline-track div {
  height: 100%;
  border-radius: inherit;
  background: #7aa7e8;
}

.stat-stack {
  justify-content: space-between;
}

.stat-stack div,
.system-stats div {
  flex: 1 1 120px;
  display: grid;
  gap: 4px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-soft);
}

.attention-item,
.service-row {
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface-soft);
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  flex: none;
}

.dot.warn {
  background: #d4a72c;
}

.dot.live {
  background: #2da66a;
}

.dot.fail {
  background: #d95040;
}

.table-card,
.config-card {
  min-width: 0;
}

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

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

.table-wrap {
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 700px;
  background: var(--surface);
}

th,
td {
  padding: 13px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.94rem;
}

th {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--surface-soft);
}

tbody tr:last-child td {
  border-bottom: none;
}

.user-cell {
  display: grid;
  gap: 2px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border: 1px solid currentColor;
  background: #ffffff;
}

.status-pill.live {
  color: var(--success);
}

.status-pill.warn {
  color: var(--warn);
}

.status-pill.fail {
  color: var(--danger);
}

.status-pill.idle {
  color: var(--idle);
}

.copy-link,
.danger-link {
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
}

.danger-link {
  color: var(--danger);
}

.service-row,
.service-meta {
  justify-content: space-between;
}

.config-card {
  grid-column: 1 / -1;
}

.table-foot {
  font-size: 0.88rem;
}

pre {
  margin: 0;
  padding: 14px;
  border-radius: 12px;
  overflow: auto;
  border: 1px solid var(--border);
  background: #fbfcfd;
  color: #24303c;
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.88rem;
  line-height: 1.6;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.18);
  display: grid;
  place-items: center;
  padding: 16px;
}

.modal-card {
  width: min(100%, 480px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.12);
  padding: 18px;
  display: grid;
  gap: 16px;
}

.modal-header,
.modal-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.modal-form {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.modal-actions {
  grid-column: 1 / -1;
  justify-content: end;
}

.ghost-button {
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
}

@media (max-width: 1120px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

  .tab-grid,
  .users-grid,
  .system-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .login-shell,
  .app-shell {
    padding: 12px;
  }

  .login-card,
  .sidebar,
  .panel-card,
  .topbar {
    padding: 16px;
  }

  .topbar {
    flex-direction: column;
    align-items: start;
  }

  .header-actions,
  .modal-form,
  .modal-actions {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: stretch;
  }

  .sparkline-row {
    grid-template-columns: 52px minmax(0, 1fr);
  }

  .sparkline-row span:last-child {
    grid-column: 2;
  }
}