:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --surface-soft: #f8fafb;
  --text: #111827;
  --muted: #667085;
  --line: #e4e7ec;
  --accent: #111827;
  --success: #16845b;
  --warning: #a15c00;
  --shadow: 0 10px 30px rgba(16, 24, 40, 0.06);
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  min-height: 100vh;
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(17, 24, 39, 0.035), transparent 28rem),
    var(--bg);
}

button,
a {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 264px minmax(0, 1fr);
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  background: #0d1117;
  color: #fff;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: #fff;
  color: #0d1117;
  font-weight: 800;
  font-size: 20px;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 15px;
}

.brand small {
  margin-top: 3px;
  color: #98a2b3;
  font-size: 12px;
}

.nav {
  margin-top: 44px;
  display: grid;
  gap: 8px;
}

.nav-item {
  width: 100%;
  padding: 13px 15px;
  border: 0;
  border-radius: 12px;
  text-align: left;
  color: #98a2b3;
  background: transparent;
  transition: 160ms ease;
}

.nav-item:hover,
.nav-item.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.09);
}

.sidebar-footer {
  margin-top: auto;
  padding: 14px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
}

.sidebar-footer strong,
.sidebar-footer small {
  display: block;
}

.sidebar-footer strong {
  font-size: 12px;
}

.sidebar-footer small {
  margin-top: 4px;
  color: #98a2b3;
  font-size: 11px;
}

.environment-dot {
  width: 9px;
  height: 9px;
  margin-top: 3px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: #32d583;
  box-shadow: 0 0 0 5px rgba(50, 213, 131, 0.1);
}

.main {
  min-width: 0;
  padding: 34px 42px 56px;
}

.topbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 30px;
}

.eyebrow,
.panel-kicker {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(28px, 4vw, 42px);
  letter-spacing: -0.04em;
}

h2 {
  margin-bottom: 12px;
  font-size: 30px;
  letter-spacing: -0.035em;
}

h3 {
  margin-bottom: 0;
  font-size: 19px;
  letter-spacing: -0.02em;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.last-sync {
  color: var(--muted);
  font-size: 12px;
}

.last-sync strong {
  color: var(--text);
}

.button {
  padding: 10px 15px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
}

.button:hover {
  background: var(--surface-soft);
}

.button.primary {
  color: #fff;
  border-color: var(--accent);
  background: var(--accent);
}

.button.primary:hover {
  background: #252f3f;
}

.button:disabled {
  cursor: wait;
  opacity: 0.6;
}

.hidden {
  display: none !important;
}

.page-section {
  display: none;
}

.page-section.active {
  display: block;
}

.hero-card {
  min-height: 260px;
  padding: 40px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  overflow: hidden;
  position: relative;
  border-radius: var(--radius-lg);
  color: #fff;
  background:
    linear-gradient(125deg, rgba(255, 255, 255, 0.08), transparent 45%),
    #111827;
  box-shadow: var(--shadow);
}

.hero-card::after {
  content: "";
  position: absolute;
  width: 340px;
  height: 340px;
  right: -90px;
  top: -140px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  box-shadow:
    0 0 0 48px rgba(255, 255, 255, 0.025),
    0 0 0 96px rgba(255, 255, 255, 0.018);
}

.hero-card > * {
  position: relative;
  z-index: 1;
}

.hero-card p {
  max-width: 660px;
  margin-bottom: 0;
  color: #cbd5e1;
  line-height: 1.7;
}

.badge {
  display: inline-flex;
  margin-bottom: 20px;
  padding: 7px 10px;
  border-radius: 999px;
  color: #344054;
  background: #eef2f6;
  font-size: 11px;
  font-weight: 700;
}

.hero-card .badge {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  white-space: nowrap;
  color: #d0d5dd;
  font-size: 12px;
  font-weight: 600;
}

.pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #32d583;
  box-shadow: 0 0 0 6px rgba(50, 213, 131, 0.11);
}

.metric-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.metric-card,
.panel {
  border: 1px solid rgba(228, 231, 236, 0.9);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow);
}

.metric-card {
  padding: 22px;
  border-radius: var(--radius-md);
}

.metric-label,
.metric-meta,
.connection-row span {
  display: block;
}

.metric-label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.metric-value {
  display: block;
  margin-top: 13px;
  font-size: 26px;
  letter-spacing: -0.04em;
}

.metric-value.muted {
  color: #475467;
  font-size: 20px;
}

.metric-value.success {
  color: var(--success);
}

.metric-meta {
  margin-top: 9px;
  color: #98a2b3;
  font-size: 11px;
}

.content-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(330px, 0.9fr);
  gap: 20px;
}

.panel {
  padding: 26px;
  border-radius: var(--radius-lg);
}

.panel-header {
  margin-bottom: 22px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.connection-list {
  display: grid;
}

.connection-row {
  padding: 18px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--line);
}

.connection-row:first-child {
  border-top: 0;
}

.connection-row strong {
  display: block;
  font-size: 14px;
}

.connection-row span:not(.status-pill) {
  margin-top: 5px;
  color: var(--muted);
  font-size: 12px;
}

.status-pill {
  flex: 0 0 auto;
  padding: 7px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
}

.status-pill.waiting {
  color: var(--warning);
  background: #fff7e8;
}

.status-pill.connected {
  color: var(--success);
  background: #eaf8f1;
}

.roadmap {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
  list-style: none;
}

.roadmap li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  align-items: start;
}

.roadmap li > span {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 11px;
  color: var(--muted);
  background: var(--surface-soft);
  font-size: 12px;
  font-weight: 700;
}

.roadmap li.done > span {
  color: #fff;
  border-color: var(--text);
  background: var(--text);
}

.roadmap strong,
.roadmap small {
  display: block;
}

.roadmap strong {
  padding-top: 2px;
  font-size: 13px;
}

.roadmap small {
  margin-top: 5px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
}

.empty-state {
  min-height: 340px;
  display: grid;
  place-content: center;
  text-align: center;
}

.empty-state p {
  max-width: 620px;
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.7;
}

.connection-layout {
  display: grid;
  grid-template-columns: minmax(340px, 0.85fr) minmax(0, 1.15fr);
  gap: 20px;
}

.section-copy {
  color: var(--muted);
  line-height: 1.7;
}

.login-form {
  margin-top: 24px;
  display: grid;
  gap: 16px;
}

.login-form label {
  display: grid;
  gap: 8px;
  color: #344054;
  font-size: 12px;
  font-weight: 700;
}

.login-form input {
  width: 100%;
  padding: 12px 13px;
  border: 1px solid var(--line);
  border-radius: 11px;
  color: var(--text);
  background: var(--surface);
  outline: none;
}

.login-form input:focus {
  border-color: #98a2b3;
  box-shadow: 0 0 0 3px rgba(152, 162, 179, 0.15);
}

.session-card {
  margin-top: 24px;
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border: 1px solid #b7e4cf;
  border-radius: 14px;
  background: #f0faf5;
}

.session-card span,
.session-card strong {
  display: block;
}

.session-card span {
  color: var(--muted);
  font-size: 11px;
}

.session-card strong {
  margin-top: 4px;
  font-size: 14px;
}

.form-message {
  min-height: 20px;
  margin: 14px 0 0;
  color: var(--success);
  font-size: 12px;
}

.form-message.error {
  color: #b42318;
}

.campaign-list {
  display: grid;
}

.campaign-list.locked-state {
  min-height: 180px;
  place-content: center;
  text-align: center;
  color: var(--muted);
}

.campaign-list code {
  padding: 2px 5px;
  border-radius: 5px;
  background: #eef2f6;
}

.campaign-row {
  padding: 16px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid var(--line);
}

.campaign-row:first-child {
  border-top: 0;
}

.campaign-row strong,
.campaign-row span:not(.status-pill) {
  display: block;
}

.campaign-row strong {
  font-size: 14px;
}

.campaign-row span:not(.status-pill) {
  margin-top: 4px;
  color: var(--muted);
  font-size: 11px;
}

@media (max-width: 1100px) {
  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .connection-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .app-shell {
    display: block;
  }

  .sidebar {
    position: static;
    width: 100%;
    height: auto;
    padding: 18px;
  }

  .nav {
    margin-top: 20px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    overflow-x: auto;
  }

  .nav-item {
    text-align: center;
    white-space: nowrap;
  }

  .sidebar-footer {
    display: none;
  }

  .main {
    padding: 24px 18px 40px;
  }

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

  .topbar-actions {
    width: 100%;
    justify-content: space-between;
  }

  .hero-card {
    padding: 28px;
  }

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

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