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

:root {
  --bg: #fafafa;
  --bg-card: #ffffff;
  --bg-dark: #f4f4f5;
  --border: #18181b;
  --accent: #09090b;
  --accent-hover: #ffffff;
  --accent2: #71717a;
  --accent-error: #de2222;
  --accent-success: #059669;
  --text: #18181b;
  --text-muted: #52525b;
  --code-bg: #f4f4f5;
  --radius: 0px;
  --radius-lg: 0px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family:
    "Inter",
    system-ui,
    -apple-system,
    sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--accent);
  color: var(--bg);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 30px 24px;
  position: relative;
  z-index: 10;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
.nav-icon {
  font-size: 1.2rem;
  filter: grayscale(100%);
}
.nav-title {
  font-size: 1.1rem;
  font-weight: 500;
  font-family: "JetBrains Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: color 0.2s;
}
.nav-links a:hover {
  color: var(--accent);
}
.btn-outline {
  border: 1px solid var(--border) !important;
  color: var(--text) !important;
  padding: 10px 22px;
  transition:
    border-color 0.2s,
    background 0.2s,
    color 0.2s !important;
}
.btn-outline:hover {
  background: var(--accent) !important;
  color: var(--bg) !important;
  border-color: var(--accent) !important;
}

.hero {
  background: var(--bg);
  padding-bottom: 90px;
  border-bottom: 1px solid var(--border);
}
.hero-body {
  text-align: center;
  padding-top: 80px;
}

.badge-row {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 32px;
}
.badge {
  display: inline-block;
  padding: 6px 16px;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--bg);
  color: var(--accent);
  border: 1px solid var(--accent);
}
.badge-green {
  color: var(--accent-success);
  border-color: var(--accent-success);
}
.badge-purple {
  color: var(--accent2);
  border-color: var(--accent2);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.04em;
  margin-bottom: 28px;
  color: var(--text);
}
.gradient-text {
  font-family: "JetBrains Mono", monospace;
  font-style: italic;
  font-weight: 300;
  color: var(--accent);
}
.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.8;
  font-weight: 300;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 64px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--accent);
  color: var(--bg);
  padding: 14px 32px;
  font-weight: 500;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  border: 1px solid var(--accent);
  cursor: pointer;
  transition:
    background 0.2s,
    color 0.2s;
}
.btn-primary:hover {
  background: transparent;
  color: var(--accent);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  color: var(--text);
  padding: 14px 32px;
  font-weight: 500;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  border: 1px solid var(--border);
  transition: border-color 0.2s;
}
.btn-ghost:hover {
  border-color: var(--accent);
}

.terminal-preview {
  max-width: 720px;
  margin: 0 auto;
  background: var(--code-bg);
  border: 1px solid var(--border);
  text-align: left;
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}
.dot {
  width: 10px;
  height: 10px;
  border-radius: 0;
  background: var(--border);
}
.dot.red {
  background: var(--accent-error);
}
.dot.yellow {
  background: var(--accent2);
}
.dot.green {
  background: var(--text-muted);
}
.terminal-title {
  margin-left: auto;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-family: "JetBrains Mono", monospace;
}
.terminal-body {
  padding: 32px;
  font-family: "JetBrains Mono", "Courier New", monospace;
  font-size: 0.85rem;
  line-height: 1.8;
  overflow-x: auto;
  color: var(--text);
}
.t-cyan {
  color: var(--accent);
}
.t-red {
  color: var(--accent-error);
}
.t-yellow {
  color: var(--accent2);
}
.t-bold {
  font-weight: 600;
  color: var(--accent);
}
.t-dim {
  color: var(--text-muted);
}

.section {
  padding: 120px 0;
  border-bottom: 1px solid var(--border);
}
.section-dark {
  background: var(--bg-dark);
  padding: 120px 0;
  border-bottom: 1px solid var(--border);
}

.section-label {
  text-transform: uppercase;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-label::before {
  content: "";
  display: block;
  width: 40px;
  height: 1px;
  background: var(--border);
}
.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 24px;
}
.section-sub {
  color: var(--text-muted);
  max-width: 580px;
  margin-bottom: 60px;
  font-weight: 300;
  font-size: 1.1rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1px;
  margin-top: 60px;
  background: var(--border);
  border: 1px solid var(--border);
}
.feature-card {
  background: var(--bg);
  padding: 48px 40px;
  transition: background 0.3s;
}
.feature-card:hover {
  background: var(--bg-card);
}
.feature-icon {
  font-size: 1.5rem;
  margin-bottom: 24px;
  filter: grayscale(100%);
  opacity: 0.8;
}
.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.feature-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  font-weight: 300;
}
.feature-card code {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85em;
  border: 1px solid var(--border);
  color: var(--accent);
  padding: 2px 8px;
}

.demo-layout {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.demo-editors {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.editor-pane {
  background: var(--code-bg);
  border: 1px solid var(--border);
}
.editor-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
  font-size: 0.8rem;
  font-weight: 500;
  font-family: "JetBrains Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.lang-flag {
  font-size: 1rem;
  filter: grayscale(100%);
}
.editor-badge {
  font-size: 0.65rem;
  padding: 4px 10px;
  border: 1px solid var(--border);
  margin-left: auto;
  color: var(--text-muted);
}
.editor-badge.base {
  border-color: var(--accent);
  color: var(--accent);
}

.editor-textarea {
  width: 100%;
  min-height: 220px;
  resize: vertical;
  background: transparent;
  color: var(--text);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85rem;
  line-height: 1.7;
  padding: 20px;
  border: none;
  outline: none;
}

.demo-controls {
  display: flex;
  gap: 20px;
  align-items: flex-end;
  flex-wrap: wrap;
}
.whitelist-label {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  min-width: 250px;
}
.whitelist-input {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 14px 20px;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
}
.whitelist-input:focus {
  border-color: var(--accent);
}
.btn-full {
  width: auto;
  white-space: nowrap;
}

.demo-results {
  background: var(--bg);
  border: 1px solid var(--border);
}
.demo-results.hidden {
  display: none;
}
.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 32px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}
.results-header h3 {
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.results-badge {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 6px 16px;
  border: 1px solid;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.results-badge.pass {
  color: var(--accent-success);
  border-color: var(--accent-success);
}
.results-badge.fail {
  color: var(--accent-error);
  border-color: var(--accent-error);
}
#results-body {
  padding: 32px;
}

.result-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 0.9rem;
}
.result-row:last-child {
  border-bottom: none;
}
.result-icon {
  flex-shrink: 0;
  font-size: 1rem;
  filter: grayscale(100%);
}
.result-key {
  font-family: "JetBrains Mono", monospace;
  font-weight: 400;
  color: var(--accent);
}
.result-val {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 6px;
}
.result-langs {
  color: var(--accent-error);
  font-size: 0.8rem;
  margin-top: 6px;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.result-ok {
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 20px 0;
  font-weight: 300;
}
.result-summary {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.result-summary span {
  white-space: nowrap;
}
.result-summary strong {
  color: var(--text);
  font-weight: 500;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 48px;
  margin-bottom: 80px;
}
.step {
  display: flex;
  gap: 32px;
  align-items: flex-start;
}
.step-num {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--text-muted);
  font-family: "JetBrains Mono", monospace;
}
.step-content {
  flex: 1;
}
.step-content h3 {
  font-size: 1.2rem;
  font-weight: 400;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}
.code-block {
  background: var(--code-bg);
  border: 1px solid var(--border);
}
.code-header {
  padding: 12px 20px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: "JetBrains Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.code-block pre {
  padding: 24px;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--text);
  overflow-x: auto;
  white-space: pre;
}

.options-table-wrap {
  margin-top: 32px;
}
.options-table-wrap h3 {
  font-size: 1.2rem;
  font-weight: 400;
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}
.options-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg);
  border: 1px solid var(--border);
}
.options-table thead {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}
.options-table th {
  text-align: left;
  padding: 16px 24px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.options-table td {
  padding: 18px 24px;
  font-size: 0.9rem;
  border-top: 1px solid var(--border);
  font-weight: 300;
}
.options-table tr:hover td {
  background: var(--bg-card);
}
.options-table code {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85em;
  border: 1px solid var(--border);
  color: var(--accent);
  padding: 4px 10px;
}

.footer {
  padding: 60px 0;
  background: var(--bg);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  font-weight: 500;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
}
.footer-copy {
  color: var(--text-muted);
}
.footer-gh {
  color: var(--accent);
  text-decoration: none;
  transition: opacity 0.2s;
}
.footer-gh:hover {
  opacity: 0.7;
}

@media (max-width: 768px) {
  .nav-links {
    gap: 16px;
  }
  .nav-links a:not(.btn-outline) {
    display: none;
  }
  .step {
    flex-direction: column;
    gap: 20px;
  }
  .demo-controls {
    flex-direction: column;
    align-items: stretch;
  }
  .footer-inner {
    flex-direction: column;
    text-align: center;
    justify-content: center;
  }
}