/* ==========================================================================
   ic.css — Infracontext product page
   Editorial layout with technical-craft accents. Green signal.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Hero — strict grid: headline + tagline + body + CTAs, terminal below
   -------------------------------------------------------------------------- */

.hero {
  padding: var(--s-8) 0 var(--s-9);
}

.hero-content {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: var(--s-6);
  align-items: start;
}

.hero-content > .hero-index {
  font-family: var(--font-mono);
}

/* Eyebrow / index column on the left */
.hero-meta {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  color: var(--ink-3);
  letter-spacing: 0.06em;
  line-height: 1.7;
}
.hero-meta .num { color: var(--signal); display: block; margin-bottom: 4px; }
.hero-meta .label { text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-2); }

.hero-body { min-width: 0; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px 4px 8px;
  font-family: var(--font-mono);
  font-size: var(--t-xxs);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--signal-ink);
  background: var(--signal-soft);
  border-radius: var(--r-1);
  margin-bottom: var(--s-5);
}

.hero-badge svg { width: 12px; height: 12px; stroke: currentColor; stroke-width: 1.6; fill: none; }

.hero h1 {
  font-family: var(--font-sans);
  font-size: clamp(56px, 8vw, 104px);
  line-height: 0.92;
  letter-spacing: -0.04em;
  font-weight: 600;
  margin: 0;
  color: var(--ink);
  text-wrap: balance;
}
.hero h1 span { color: var(--ink); }

.hero-tagline {
  font-family: var(--font-sans);
  font-size: var(--t-lg);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.012em;
  color: var(--signal);
  margin: var(--s-5) 0 0;
  max-width: 38ch;
  text-wrap: balance;
}

.hero p:not(.hero-tagline) {
  font-family: var(--font-sans);
  font-size: var(--t-md);
  line-height: 1.55;
  color: var(--ink-2);
  margin: var(--s-4) 0 0;
  max-width: 60ch;
  text-wrap: pretty;
}

.hero-buttons {
  display: flex;
  gap: var(--s-3);
  margin-top: var(--s-6);
  flex-wrap: wrap;
}

.terminal-container {
  margin-top: var(--s-7);
}

/* --------------------------------------------------------------------------
   2. Sections
   -------------------------------------------------------------------------- */

.problem-solution,
.how-it-works,
.features,
.node-yaml,
.cli-section,
.tiers-section,
.quickstart-section,
.cta {
  padding: var(--s-9) 0;
}

/* --------------------------------------------------------------------------
   3. Problem / Solution — two bordered columns
   -------------------------------------------------------------------------- */

.section-header em {
  font-style: italic;
  color: var(--signal);
}

.ps-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--ink);
}

.ps-card {
  padding: var(--s-6);
  border-bottom: 1px solid var(--line);
}

.ps-card.ps-problem {
  border-right: 1px solid var(--line);
}

.ps-card h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-sans);
  font-size: var(--t-xl);
  font-weight: 600;
  letter-spacing: -0.018em;
  color: var(--ink);
  margin: 0 0 var(--s-5);
}

.ps-card h3 svg {
  width: 22px;
  height: 22px;
  stroke-width: 1.5;
  fill: none;
}

.ps-problem h3 svg { stroke: var(--ink-3); }
.ps-solution h3 svg { stroke: var(--signal); }

.ps-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--s-3);
}

.ps-item {
  display: flex;
  gap: 10px;
  font-family: var(--font-sans);
  font-size: var(--t-sm);
  line-height: 1.5;
  color: var(--ink-2);
}

.ps-item::before {
  content: "—";
  display: inline-block;
  width: 12px;
  flex-shrink: 0;
  color: var(--ink-4);
}

.ps-item-solution::before {
  content: "+";
  color: var(--signal);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   4. Code / terminal windows — sharp, ink-on-paper
   -------------------------------------------------------------------------- */

.terminal,
.code-window {
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--r-2);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: var(--t-sm);
  border: 1px solid var(--ink);
}

.terminal-header,
.code-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--paper-3);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  color: var(--ink-3);
  letter-spacing: 0.04em;
}

[data-theme="dark"] .terminal-header,
[data-theme="dark"] .code-header {
  background: var(--paper-2);
  color: var(--ink-3);
  border-bottom-color: var(--line);
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ink-4);
  opacity: 0.5;
}
.terminal-dot.red    { background: #ff5f57; opacity: 0.7; }
.terminal-dot.yellow { background: #febc2e; opacity: 0.7; }
.terminal-dot.green  { background: #28c840; opacity: 0.7; }

.terminal-title,
.code-filename {
  margin-left: 6px;
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  color: var(--ink-3);
  letter-spacing: 0.02em;
}

.code-dots {
  display: flex;
  gap: 6px;
}

.terminal-body,
.code-body {
  padding: var(--s-5);
  line-height: 1.7;
  overflow-x: auto;
}

.terminal-line { white-space: pre-wrap; }

.terminal-prompt { color: var(--signal); }
.terminal-command { color: var(--paper); }
.terminal-output { color: var(--ink-3); }
.terminal-highlight { color: var(--signal); }

.code-body pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--t-sm);
  line-height: 1.7;
  color: var(--paper-3);
  white-space: pre;
}

.yaml-key      { color: var(--signal); }
.yaml-string   { color: var(--paper); }
.yaml-value    { color: var(--paper); }
.yaml-comment  { color: var(--ink-4); font-style: italic; }

/* --------------------------------------------------------------------------
   5. How it works — architecture diagram + components list
   -------------------------------------------------------------------------- */

.arch-diagram { margin-bottom: var(--s-6); }

.arch-components {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--ink);
  counter-reset: arch;
}

.arch-components li {
  counter-increment: arch;
  padding: var(--s-5);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-sans);
  font-size: var(--t-sm);
  line-height: 1.5;
  color: var(--ink-2);
  position: relative;
  padding-top: var(--s-7);
}

.arch-components li:last-child { border-right: 0; }

.arch-components li::before {
  content: counter(arch, decimal-leading-zero);
  position: absolute;
  top: var(--s-4);
  left: var(--s-5);
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  letter-spacing: 0.08em;
  color: var(--signal);
}

.arch-components strong {
  display: block;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 4px;
}

.arch-components code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--paper-2);
  padding: 1px 5px;
  border-radius: var(--r-1);
  color: var(--ink);
}

/* --------------------------------------------------------------------------
   6. Features grid
   -------------------------------------------------------------------------- */

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--ink);
}

.feature-card {
  padding: var(--s-6) var(--s-5) var(--s-7);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
}

.feature-card:nth-child(4n) { border-right: 0; }
.feature-card:nth-last-child(-n+4) { border-bottom: 0; }

.feature-icon {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.feature-icon svg {
  width: 100%;
  height: 100%;
  stroke: var(--ink);
  stroke-width: 1.4;
  fill: none;
}

.feature-card h3 {
  font-family: var(--font-sans);
  font-size: var(--t-md);
  font-weight: 600;
  letter-spacing: -0.012em;
  color: var(--ink);
  margin: var(--s-2) 0 0;
}

.feature-card p {
  font-family: var(--font-sans);
  font-size: var(--t-sm);
  line-height: 1.5;
  color: var(--ink-2);
  margin: 0;
}

.feature-card code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  background: var(--paper-2);
  padding: 1px 5px;
  border-radius: var(--r-1);
  color: var(--ink);
}

/* --------------------------------------------------------------------------
   7. Node YAML
   -------------------------------------------------------------------------- */

.node-yaml-note {
  font-family: var(--font-sans);
  font-size: var(--t-sm);
  line-height: 1.6;
  color: var(--ink-3);
  margin: var(--s-5) 0 0;
  max-width: 62ch;
  text-wrap: pretty;
}

/* --------------------------------------------------------------------------
   8. CLI section — split: command list / live terminal
   -------------------------------------------------------------------------- */

.cli-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-7);
  align-items: start;
}

.cli-info h2 {
  font-family: var(--font-sans);
  font-size: var(--t-2xl);
  font-weight: 600;
  letter-spacing: -0.022em;
  margin: 0 0 var(--s-4);
}

.cli-info > p {
  font-family: var(--font-sans);
  font-size: var(--t-md);
  line-height: 1.5;
  color: var(--ink-2);
  margin: 0 0 var(--s-6);
  max-width: 50ch;
}

.command-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--ink);
}

.command-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: var(--s-4);
  padding: var(--s-3) 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}

.command-name {
  font-family: var(--font-mono);
  font-size: var(--t-sm);
  color: var(--signal);
  letter-spacing: -0.005em;
}

.command-desc {
  font-family: var(--font-sans);
  font-size: var(--t-sm);
  color: var(--ink-2);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   9. Access tiers
   -------------------------------------------------------------------------- */

.tiers-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid var(--ink);
}

.tier-card {
  padding: var(--s-5);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
}

.tier-card:last-child { border-right: 0; }

.tier-number {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  letter-spacing: 0.08em;
  color: var(--signal);
}

.tier-name {
  font-family: var(--font-mono);
  font-size: var(--t-md);
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.005em;
}

.tier-desc {
  font-family: var(--font-sans);
  font-size: var(--t-sm);
  line-height: 1.5;
  color: var(--ink-2);
  margin-top: var(--s-2);
}

/* --------------------------------------------------------------------------
   10. Quickstart — numbered steps with code windows
   -------------------------------------------------------------------------- */

.quickstart-steps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-6);
}

.quickstart-step {
  display: flex;
  flex-direction: column;
  gap: var(--s-4);
}

.quickstart-step-header {
  display: flex;
  align-items: baseline;
  gap: var(--s-3);
  padding-bottom: var(--s-3);
  border-bottom: 1px solid var(--line);
}

.quickstart-step-number {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  letter-spacing: 0.08em;
  color: var(--signal);
}

.quickstart-step-title {
  font-family: var(--font-sans);
  font-size: var(--t-lg);
  font-weight: 600;
  letter-spacing: -0.012em;
  color: var(--ink);
}

/* --------------------------------------------------------------------------
   11. CTA — final dark block
   -------------------------------------------------------------------------- */

.cta {
  background: var(--ink);
  color: var(--paper);
  padding: var(--s-9) 0;
}

.cta-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-7);
  align-items: end;
}

.cta-content h2 {
  font-family: var(--font-sans);
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
  margin: 0;
  color: var(--paper);
}

.cta-content p {
  font-family: var(--font-sans);
  font-size: var(--t-md);
  line-height: 1.5;
  color: var(--paper-3);
  margin: 0;
  max-width: 50ch;
}

.cta-buttons {
  grid-column: 1 / -1;
  display: flex;
  gap: var(--s-3);
  flex-wrap: wrap;
  margin-top: var(--s-5);
  padding-top: var(--s-5);
  border-top: 1px solid var(--line-strong);
}

.cta .btn-primary {
  background: var(--signal);
  color: #fff;
  border-color: var(--signal);
}
.cta .btn-primary:hover {
  background: var(--signal-ink);
  border-color: var(--signal-ink);
}

.cta .btn-secondary {
  background: transparent;
  color: var(--paper);
  border-color: var(--ink-3);
}
.cta .btn-secondary:hover {
  background: var(--paper-3);
  color: var(--ink);
  border-color: var(--paper-3);
}

/* --------------------------------------------------------------------------
   12. Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-card:nth-child(4n) { border-right: 1px solid var(--line); }
  .feature-card:nth-child(2n) { border-right: 0; }
  .feature-card:nth-last-child(-n+4) { border-bottom: 1px solid var(--line); }
  .feature-card:nth-last-child(-n+2) { border-bottom: 0; }

  .arch-components { grid-template-columns: 1fr; }
  .arch-components li { border-right: 0; }
  .arch-components li:last-child { border-bottom: 0; }

  .tiers-grid { grid-template-columns: repeat(2, 1fr); }
  .tier-card:nth-child(2n) { border-right: 0; }
  .tier-card:last-child { border-right: 0; grid-column: span 2; }

  .cli-content,
  .quickstart-steps,
  .cta-content {
    grid-template-columns: 1fr;
    gap: var(--s-6);
  }

  .cta-buttons { grid-column: 1; }
}

@media (max-width: 768px) {
  .hero { padding: var(--s-7) 0 var(--s-8); }
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--s-4);
  }
  .hero h1 { font-size: clamp(40px, 10vw, 64px); }
  .hero-tagline { font-size: var(--t-md); }
  .hero p:not(.hero-tagline) { font-size: var(--t-sm); }

  .problem-solution, .how-it-works, .features,
  .node-yaml, .cli-section, .tiers-section,
  .quickstart-section, .cta { padding: var(--s-7) 0; }

  .ps-grid { grid-template-columns: 1fr; }
  .ps-card.ps-problem { border-right: 0; }

  .features-grid { grid-template-columns: 1fr; }
  .feature-card { border-right: 0 !important; }
  .feature-card:last-child { border-bottom: 0; }

  .tiers-grid { grid-template-columns: 1fr; }
  .tier-card { border-right: 0 !important; }
  .tier-card:last-child { border-bottom: 0; grid-column: 1; }

  .command-item {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .terminal-body, .code-body { font-size: var(--t-xs); padding: var(--s-4); }
  .code-body pre { font-size: var(--t-xs); }
}