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

:root {
  --bg: #f5f5f5;
  --surface: #ffffff;
  --surface-2: #f0f3f8;
  --text: #171a21;
  --muted: #647084;
  --border: #dce2eb;
  --accent: #315fd6;
  --accent-2: #14a06f;
  --danger: #c43d3d;
  --warning: #a96f00;
  --shadow: rgba(24, 35, 55, 0.12);
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111318;
    --surface: #1a1d24;
    --surface-2: #222734;
    --text: #f1f3f8;
    --muted: #9aa6ba;
    --border: #303746;
    --accent: #8ab4ff;
    --accent-2: #44d3a2;
    --danger: #ff7a7a;
    --warning: #f4bf60;
    --shadow: rgba(0, 0, 0, 0.35);
  }
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
}

button,
input,
select {
  font: inherit;
}

button {
  border: 0;
}

.app-shell {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.login-panel {
  width: min(420px, 100%);
  margin: 20vh auto 0;
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 18px 48px var(--shadow);
}

.login-panel h1 {
  margin: 8px 0 12px;
  font-size: 1.6rem;
  letter-spacing: 0;
  line-height: 1.15;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.muted {
  color: var(--muted);
}

.button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 16px;
  border-radius: 7px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  font-weight: 700;
}

.button:hover {
  filter: brightness(1.04);
}

.button:disabled {
  cursor: wait;
  opacity: 0.62;
}

.button--secondary {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
}

.button--ghost {
  background: var(--surface-2);
  color: var(--text);
}

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0 18px;
}

.topbar h1 {
  margin: 4px 0 6px;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: 0;
  line-height: 1.05;
}

.topbar p {
  margin: 0;
}

.user-box {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  min-width: 240px;
  text-align: right;
}

.user-box strong,
.user-box span {
  display: block;
}

.tabs {
  display: flex;
  gap: 8px;
  margin: 12px 0 18px;
  border-bottom: 1px solid var(--border);
}

.tab {
  min-height: 44px;
  padding: 0 14px;
  border-bottom: 3px solid transparent;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-weight: 800;
}

.tab.is-active {
  border-color: var(--accent);
  color: var(--text);
}

.panel {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 14px 40px var(--shadow);
}

.panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 20px;
}

.panel-title {
  margin: 4px 0 6px;
  font-size: 1.25rem;
  letter-spacing: 0;
}

.state {
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--surface-2);
  color: var(--muted);
}

.state--error {
  border-color: color-mix(in srgb, var(--danger), var(--border) 60%);
  color: var(--danger);
}

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

.version-card {
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-2);
}

.version-card h3 {
  margin: 0 0 16px;
  font-size: 1rem;
}

.field {
  display: grid;
  gap: 7px;
  margin-top: 12px;
}

.field span {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.input,
.select {
  width: 100%;
  height: 42px;
  padding: 0 11px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--surface);
  color: var(--text);
}

.input:focus,
.select:focus {
  border-color: var(--accent);
  outline: 2px solid color-mix(in srgb, var(--accent), transparent 72%);
}

.actions {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 18px;
}

.message {
  margin: 0;
  color: var(--muted);
}

.message--success {
  color: var(--accent-2);
}

.message--error {
  color: var(--danger);
}

.callout {
  margin: 0 0 18px;
  padding: 14px 16px;
  border: 1px solid color-mix(in srgb, var(--warning), var(--border) 65%);
  border-radius: 7px;
  color: var(--warning);
  background: color-mix(in srgb, var(--warning), transparent 90%);
}

.analytics-toolbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}

.stat {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-2);
}

.stat span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.stat strong {
  display: block;
  margin-top: 8px;
  font-size: 1.55rem;
}

.analytics-section {
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
}

.analytics-section h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.analytics-section h3::before {
  content: "";
  width: 6px;
  height: 22px;
  border-radius: 999px;
  background: var(--accent);
}

.bar-row {
  display: grid;
  grid-template-columns: minmax(130px, 1fr) 72px minmax(160px, 3fr);
  align-items: center;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--border);
}

.bar-row:last-child {
  border-bottom: 0;
}

.bar-label {
  font-weight: 700;
}

.bar-count {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.bar-track {
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--surface-2);
}

.bar-fill {
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
}

.json-grid {
  display: grid;
  gap: 10px;
}

.json-row {
  display: grid;
  grid-template-columns: minmax(120px, 180px) minmax(0, 1fr);
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.json-key {
  color: var(--muted);
  font-weight: 800;
}

.json-value {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
}

@media (max-width: 820px) {
  .app-shell {
    width: min(100% - 20px, 1160px);
    padding-top: 14px;
  }

  .topbar,
  .panel-header,
  .analytics-toolbar {
    display: grid;
  }

  .user-box {
    justify-content: flex-start;
    text-align: left;
  }

  .versions-grid,
  .stat-grid {
    grid-template-columns: 1fr;
  }

  .panel,
  .login-panel {
    padding: 20px;
  }

  .bar-row,
  .json-row {
    grid-template-columns: 1fr;
  }

  .bar-count {
    text-align: left;
  }
}