:root {
  --container-bg: #20232a;
}

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

.page {
  display: flex;
  flex-direction: column;
  font-family: Roboto, sans-serif;
  min-height: 100vh;
  background: #111;
  color: #e2e8f0;
}

.header {
  background: linear-gradient(135deg, #25d366, #128c7e);
  color: #fff;
  padding: 64px 24px 48px;
  text-align: center;
}

.header-title {
  font-size: 2.5rem;
  margin-bottom: 8px;
}

.header-link,
.footer-link {
  color: inherit;
  text-decoration: none;
}

.header-link:hover {
  text-decoration: underline;
}

.footer-link:hover {
  color: #94a3b8;
}

.header-sub {
  font-size: 1.1rem;
  color: #fff;
}

.main {
  flex: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: 48px 24px;
  width: 100%;
}

.section-options {
  margin-bottom: 48px;
}

.section-title {
  font-size: 1.4rem;
  margin: 0 0 16px;
  color: #f1f5f9;
}

.text {
  line-height: 1.7;
  color: #94a3b8;
}

.code-block {
  background: #282c34;
  padding: 20px;
  overflow-x: auto;
  font-size: 0.9rem;
  line-height: 1.5;
  margin-bottom: 24px;
}

.code-inline {
  font-family: "JetBrains Mono", "Fira Code", monospace;
}

.footer {
  text-align: center;
  padding: 32px 24px;
  color: #475569;
  font-size: 0.85rem;
}

.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 0;
}

.tab {
  flex: 1;
  padding: 12px;
  border: none;
  background: #282c34;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  color: #64748b;
  transition: all 0.2s;
}

.tab.active {
  background: var(--container-bg);
  color: #fff;
}

.panels {
  position: relative;
  min-height: 380px;
}

.panel {
  position: absolute;
  inset: 0;
  overflow-y: auto;
  margin-bottom: 0 !important;
  border-radius: 0 !important;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.panel.active {
  opacity: 1;
  pointer-events: auto;
}

.table-wrapper {
  overflow-x: auto;
  margin-bottom: 40px;
}

.options-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  background: var(--container-bg);
}

.options-table th,
.options-table td {
  text-align: left;
  padding: 16px;
  border-bottom: 1px solid #1e293b;
}

.options-table th {
  color: #94a3b8;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.options-table td code {
  color: #a5d6ff;
}

.badge {
  display: inline-block;
  background: #22c55e;
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  text-transform: uppercase;
}