/* MCP Jail - Geometric Minimalist Design */
@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@300;400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --ink: #0a0a0a;
  --paper: #fafafa;
  --line: #1a1a1a;
  --accent: #d62828;
  --accent-light: #fef2f2;
  --success: #065f46;
  --warning: #92400e;
  --muted: #737373;
  --border: #e5e5e5;
}

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

body {
  font-family: 'IBM Plex Sans', -apple-system, sans-serif;
  font-weight: 300;
  line-height: 1.7;
  color: var(--ink);
  background: var(--paper);
  font-size: 15px;
}

/* === NAVIGATION === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  z-index: 100;
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.brand-symbol {
  font-size: 1.5rem;
  color: var(--accent);
}
.brand-text {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.2em;
}
.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}
.nav-links a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 400;
}
.nav-links a:hover {
  color: var(--accent);
}
.nav-github {
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--line);
}

/* === CONTAINER === */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* === HERO === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6rem 2rem 4rem;
}
.hero-frame {
  border: 1px solid var(--line);
  padding: 4rem;
  max-width: 800px;
  text-align: center;
}
.hero-label {
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--muted);
  margin-bottom: 1.5rem;
}
.hero-title {
  font-size: 2.5rem;
  font-weight: 300;
  letter-spacing: 0.02em;
  line-height: 1.3;
  margin-bottom: 1rem;
}
.accent {
  color: var(--accent);
}
.hero-desc {
  font-size: 1rem;
  color: var(--muted);
  max-width: 500px;
  margin: 0 auto 2rem;
}
.install-box {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  background: var(--ink);
  margin-bottom: 0.5rem;
}
.install-cmd {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.85rem;
  color: var(--paper);
  padding: 0.8rem 1.2rem;
}
.copy-btn {
  background: var(--accent);
  color: var(--paper);
  border: none;
  padding: 0.8rem 1rem;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  cursor: pointer;
  font-family: inherit;
}
.copy-btn:hover {
  background: #b91c1c;
}
.install-note {
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}

/* === DIVIDER === */
.divider {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 2rem 0;
}
.divider::before, .divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}
.divider-symbol {
  width: 6px;
  height: 6px;
  background: var(--accent);
  transform: rotate(45deg);
}

/* === SECTIONS === */
.section {
  padding: 5rem 0;
  border-top: 1px solid var(--border);
}
.section-header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 2rem;
}
.section-num {
  font-size: 3rem;
  font-weight: 300;
  color: var(--accent);
  opacity: 0.4;
  line-height: 1;
}
.section-title {
  font-size: 1.5rem;
  font-weight: 400;
  letter-spacing: 0.05em;
}
.intro-text {
  font-size: 1.05rem;
  margin-bottom: 2rem;
  text-align: justify;
}

/* === STATS GRID === */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin: 2rem 0;
}
.stat-block {
  background: var(--paper);
  padding: 1.5rem 1rem;
  text-align: center;
}
.stat-value {
  font-size: 2.5rem;
  font-weight: 300;
  color: var(--accent);
  line-height: 1;
}
.stat-label {
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin-top: 0.5rem;
}

/* === CALLOUT === */
.callout {
  margin: 2rem 0;
  padding: 1.2rem 1.5rem;
  border: 1px solid var(--border);
  position: relative;
}
.callout::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
}
.callout-critical::before { background: var(--accent); }
.callout-title {
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}
.callout p {
  font-size: 0.9rem;
  margin: 0;
}

/* === REPORT DOWNLOAD === */
.report-download {
  margin: 2rem 0;
}
.download-link {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--ink);
  transition: all 0.2s;
}
.download-link:hover {
  background: var(--ink);
  color: var(--paper);
}
.download-icon {
  font-size: 1.5rem;
}
.download-text {
  display: flex;
  flex-direction: column;
  text-align: left;
}
.download-text strong {
  font-weight: 500;
  font-size: 0.95rem;
}
.download-text span {
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}
.download-link:hover .download-text span {
  color: var(--border);
}

/* === COMPARISON === */
.comparison {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1rem;
  align-items: start;
  margin: 2rem 0;
}
.comparison-box {
  border: 1px solid var(--border);
}
.comparison-header {
  background: var(--ink);
  color: var(--paper);
  padding: 0.5rem 1rem;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-align: center;
}
.comparison-before .comparison-header {
  background: var(--accent);
}
.comparison-after .comparison-header {
  background: var(--success);
}
.comparison-cmd {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  padding: 1rem;
  background: #f5f5f5;
  border-bottom: 1px solid var(--border);
  word-break: break-all;
}
.comparison-list {
  list-style: none;
  padding: 1rem;
}
.comparison-list li {
  font-size: 0.85rem;
  padding: 0.3rem 0;
  padding-left: 1.2rem;
  position: relative;
}
.comparison-list li::before {
  position: absolute;
  left: 0;
}
.danger-list li::before {
  content: "×";
  color: var(--accent);
}
.safe-list li::before {
  content: "✓";
  color: var(--success);
}
.comparison-arrow {
  font-size: 2rem;
  color: var(--muted);
  align-self: center;
  padding-top: 3rem;
}

/* === ARCHITECTURE === */
.arch-diagram {
  margin: 1.5rem 0;
  border: 1px solid var(--border);
  background: #1e1e1e;
  overflow-x: auto;
}
.arch-ascii {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  color: #d4d4d4;
  line-height: 1.4;
  padding: 1.5rem;
  margin: 0;
  white-space: pre;
}

/* === TABLES === */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.85rem;
}
th {
  background: var(--ink);
  color: var(--paper);
  padding: 0.7rem 1rem;
  text-align: left;
  font-weight: 400;
  letter-spacing: 0.05em;
  font-size: 0.75rem;
  text-transform: uppercase;
}
td {
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
tr:hover td { background: #f9f9f9; }

/* === H3 HEADERS === */
h3 {
  font-size: 1rem;
  font-weight: 500;
  margin: 2rem 0 1rem;
  padding-left: 0.8rem;
  border-left: 2px solid var(--accent);
}

/* === VULN GRID === */
.vuln-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin: 1.5rem 0;
}
.vuln-card {
  background: var(--paper);
  padding: 1rem;
  text-align: center;
}
.vuln-id {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  color: var(--accent);
  font-weight: 500;
}
.vuln-name {
  font-size: 0.9rem;
  font-weight: 500;
  margin: 0.3rem 0;
}
.vuln-prev {
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}

/* === CODE BLOCKS === */
.code-block {
  background: #1e1e1e;
  border-left: 2px solid var(--accent);
  margin: 1rem 0;
}
.code-block code {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.85rem;
  color: #d4d4d4;
  padding: 1rem 1.2rem;
}
.code-block pre {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.8rem;
  color: #d4d4d4;
  padding: 1rem 1.2rem;
  margin: 0;
  line-height: 1.5;
}

/* === EXAMPLE BLOCKS === */
.example-block {
  margin: 1.5rem 0;
}
.example-title {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

/* === LISTS === */
.req-list {
  margin: 1rem 0 1rem 1.5rem;
}
.req-list li {
  font-size: 0.9rem;
  margin: 0.3rem 0;
}

/* Inline code */
p code, li code {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.85em;
  background: #f0f0f0;
  padding: 0.15rem 0.35rem;
}

/* === POLICIES GRID === */
.policies-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin: 1.5rem 0;
}
.policy-card {
  border: 1px solid var(--border);
  padding: 1.2rem;
}
.policy-name {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}
.policy-desc {
  font-size: 0.85rem;
  color: var(--muted);
}

/* === DOWNLOADS === */
.downloads-note {
  margin-top: 1.5rem;
  font-size: 0.85rem;
  text-align: center;
}
.downloads-note a {
  color: var(--ink);
}
.downloads-note a:hover {
  color: var(--accent);
}

/* === FOOTER === */
.footer {
  padding: 3rem 0;
  text-align: center;
}
.footer-content {
  padding: 2rem 0;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}
.footer-tagline {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 1rem;
}
.footer-links {
  font-size: 0.8rem;
  margin-bottom: 1rem;
}
.footer-links a {
  color: var(--ink);
  text-decoration: none;
}
.footer-links a:hover {
  color: var(--accent);
}
.footer-copy {
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .nav-links a:not(.nav-github) {
    display: none;
  }
  .hero-frame {
    padding: 2rem;
  }
  .hero-title {
    font-size: 1.8rem;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .comparison {
    grid-template-columns: 1fr;
  }
  .comparison-arrow {
    transform: rotate(90deg);
    padding: 1rem 0;
  }
  .vuln-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .policies-grid {
    grid-template-columns: 1fr;
  }
  .install-box {
    flex-direction: column;
  }
  .install-cmd {
    font-size: 0.7rem;
  }
}

/* === LINKS === */
a {
  color: var(--accent);
}
a:hover {
  text-decoration: none;
}

/* === TABLE LINKS === */
td a {
  color: var(--ink);
  text-decoration: none;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.8rem;
}
td a:hover {
  color: var(--accent);
}