:root {
  --bg-base: #131314;
  --bg-surface: #1e1f20;
  --bg-surface-elevated: #282a2c;
  --border-color: #3c4043;
  --border-subtle: #2d3135;
  --text-main: #e3e3e3;
  --text-muted: #9aa0a6;
  --primary: #8ab4f8;
  --primary-hover: #aecbfa;
  --primary-bg: rgba(138, 180, 248, 0.12);
  --success: #81c995;
  --success-bg: rgba(129, 201, 149, 0.12);
  --warning: #fdd663;
  --warning-bg: rgba(253, 214, 99, 0.12);
  --danger: #f28b82;
  --danger-bg: rgba(242, 139, 130, 0.12);
  --font-sans: 'Google Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Roboto Mono', monospace;
}

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

body {
  background-color: var(--bg-base);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
}

.hidden {
  display: none !important;
}

/* Icons */
.brand-icon {
  width: 24px;
  height: 24px;
  stroke: var(--primary);
}

.icon-sm {
  width: 16px;
  height: 16px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  border: 1px solid transparent;
  font-family: inherit;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-primary {
  background-color: var(--primary);
  color: #041e49;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: var(--bg-surface-elevated);
  color: var(--text-main);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background-color: #37393b;
}

.btn-danger {
  background-color: var(--danger-bg);
  color: var(--danger);
  border-color: rgba(242, 139, 130, 0.3);
}

.btn-danger:hover {
  background-color: rgba(242, 139, 130, 0.2);
}

.btn-icon {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
}

.btn-icon:hover {
  color: var(--text-main);
  background-color: var(--bg-surface-elevated);
}

.btn-block {
  width: 100%;
}

/* Form inputs */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.form-control, input[type="text"], input[type="password"], select, textarea {
  width: 100%;
  background-color: var(--bg-base);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 8px 12px;
  border-radius: 8px;
  font-family: inherit;
  font-size: 13px;
  outline: none;
  transition: border-color 0.15s;
}

.form-control:focus, input:focus, select:focus, textarea:focus {
  border-color: var(--primary);
}

/* Login Screen */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.login-card .brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.login-card .subtitle {
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 24px;
}

.error-msg {
  color: var(--danger);
  font-size: 12px;
  margin-bottom: 12px;
}

/* Topbar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  height: 60px;
}

.brand-nav {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-title {
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.2px;
}

.brand-badge {
  background-color: var(--primary-bg);
  color: var(--primary);
  font-size: 11px;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 12px;
  text-transform: uppercase;
}

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

.metric-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  background-color: var(--bg-surface-elevated);
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--border-subtle);
  font-size: 12px;
}

.metric-pill.highlight {
  border-color: rgba(129, 201, 149, 0.4);
  background-color: var(--success-bg);
}

.metric-pill.highlight .metric-val {
  color: var(--success);
  font-weight: 700;
}

.metric-label {
  color: var(--text-muted);
}

.metric-val {
  font-family: var(--font-mono);
  font-weight: 500;
}

/* Subnav Tabs */
.subnav {
  display: flex;
  gap: 8px;
  padding: 8px 24px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
}

.nav-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 8px;
  background: transparent;
  color: var(--text-muted);
  border: none;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
}

.nav-tab:hover {
  color: var(--text-main);
  background-color: var(--bg-surface-elevated);
}

.nav-tab.active {
  color: var(--primary);
  background-color: var(--primary-bg);
}

/* Content Area */
.content-area {
  padding: 24px;
  max-width: 1400px;
  margin: 0 auto;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

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

.section-header h3 {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 4px;
}

.section-desc {
  color: var(--text-muted);
  font-size: 13px;
}

/* Accounts Grid */
.accounts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 16px;
}

.account-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 16px;
  transition: border-color 0.15s;
}

.account-card:hover {
  border-color: var(--primary);
}

.account-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.account-title-box {
  display: flex;
  align-items: center;
  gap: 8px;
}

.account-alias {
  font-weight: 700;
  font-size: 14px;
}

.account-email {
  font-size: 12px;
  color: var(--text-muted);
}

.badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 500;
}

.badge-active {
  background-color: var(--success-bg);
  color: var(--success);
}

.badge-cooldown {
  background-color: var(--warning-bg);
  color: var(--warning);
}

.badge-disabled {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
}

.quota-meter {
  margin-bottom: 12px;
}

.meter-header {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  margin-bottom: 4px;
}

.meter-title {
  color: var(--text-muted);
}

.meter-pct {
  font-family: var(--font-mono);
  font-weight: 500;
}

.progress-track {
  width: 100%;
  height: 6px;
  background-color: var(--bg-base);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.3s ease;
}

.fill-high {
  background-color: var(--success);
}

.fill-mid {
  background-color: var(--warning);
}

.fill-low {
  background-color: var(--danger);
}

.account-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 10px;
  border-top: 1px solid var(--border-subtle);
  font-size: 12px;
}

.account-served {
  color: var(--text-muted);
}

/* Tables */
.table-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.data-table th {
  background-color: var(--bg-surface-elevated);
  padding: 10px 16px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
}

.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 13px;
}

.data-table tr:last-child td {
  border-bottom: none;
}

.key-code {
  font-family: var(--font-mono);
  background-color: var(--bg-base);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
  font-size: 12px;
}

/* Playground */
.playground-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.playground-editor, .playground-output {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
}

.output-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 500;
}

.meta-tag {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.output-content {
  background-color: var(--bg-base);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 14px;
  min-height: 250px;
  max-height: 500px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  white-space: pre-wrap;
  color: #c9d1d9;
}

/* Docs */
.docs-container {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 28px;
}

.docs-container h2 {
  font-size: 20px;
  margin-bottom: 6px;
}

.doc-block {
  margin-top: 24px;
}

.doc-block h4 {
  font-size: 14px;
  color: var(--primary);
  margin-bottom: 8px;
}

.doc-block p, .doc-block ul {
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 8px;
}

.doc-block ul {
  padding-left: 20px;
}

.code-box {
  background-color: var(--bg-base);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  overflow-x: auto;
  color: #c9d1d9;
}

/* Modals */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  width: 100%;
  max-width: 480px;
  padding: 24px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 20px;
}

.key-display-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: var(--bg-base);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px;
  margin: 16px 0;
}

.key-display-box code {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--primary);
  word-break: break-all;
}

.success-note {
  font-size: 13px;
  color: var(--text-muted);
}

/* Expandable Log Rows */
.log-row {
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.log-row:hover {
  background-color: var(--bg-surface-elevated);
}

.log-row.expanded {
  background-color: rgba(138, 180, 248, 0.08);
}

.log-expand-icon {
  display: inline-flex;
  align-items: center;
  transition: transform 0.2s ease;
  margin-right: 6px;
  color: var(--text-muted);
}

.log-row.expanded .log-expand-icon {
  transform: rotate(90deg);
  color: var(--primary);
}

.log-detail-row {
  background-color: #121316;
  border-bottom: 1px solid var(--border-color);
}

.log-detail-container {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.log-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  padding: 12px 16px;
  background-color: var(--bg-surface);
  border-radius: 8px;
  border: 1px solid var(--border-subtle);
}

.log-detail-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.log-detail-item .label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.log-detail-item .value {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-main);
  font-family: var(--font-mono);
}

.log-payloads-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

@media (max-width: 900px) {
  .log-payloads-wrapper {
    grid-template-columns: 1fr;
  }
}

.log-payload-box {
  background-color: var(--bg-base);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.log-payload-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}

.log-payload-content {
  padding: 12px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  color: #c9d1d9;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 350px;
  overflow-y: auto;
}