/* ============================================================
   BRIAN BENWAH — main.css
   Design System: Terminal-rooted, Apple-minimal, dark mode only
   ============================================================ */

/* === RESET & BASE === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video { max-width: 100%; display: block; }
a { color: var(--color-cyan); text-decoration: none; transition: color 120ms ease; }
a:hover { color: var(--color-text-primary); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* === DESIGN TOKENS === */
:root {
  /* Colors */
  --color-bg:             #0D1117;
  --color-surface:        #161C23;
  --color-surface-2:      #1C242E;
  --color-border:         #262D36;
  --color-border-focus:   #56B6C2;
  --color-cyan:           #56B6C2;
  --color-cyan-deep:      #2E6B73;
  --color-green:          #7EC699;
  --color-amber:          #E5C07B;
  --color-red:            #E06C75;
  --color-text-primary:   #E6EDF3;
  --color-text-secondary: #9BA7B4;
  --color-text-muted:     #5C6773;

  /* Typography */
  --font-heading: 'Space Grotesk', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1.0625rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;
  --text-6xl:  3.75rem;

  --leading-tight:   1.2;
  --leading-snug:    1.35;
  --leading-normal:  1.5;
  --leading-relaxed: 1.65;

  --tracking-tight:   -0.02em;
  --tracking-normal:   0em;
  --tracking-wide:     0.06em;
  --tracking-widest:   0.12em;

  --weight-normal:   400;
  --weight-medium:   500;
  --weight-semibold: 600;
  --weight-bold:     700;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  --section-gap: clamp(5rem, 10vw, 8rem);

  /* Layout */
  --max-prose:   720px;
  --max-content: 1100px;
  --max-wide:    1280px;

  /* Radius */
  --radius-sm:   4px;
  --radius-md:   6px;
  --radius-lg:   8px;
  --radius-xl:   12px;
  --radius-full: 9999px;

  /* Nav */
  --nav-height: 64px;
}

/* === LAYOUT === */
.container {
  width: 100%;
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-prose {
  max-width: var(--max-prose);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-wide {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

h1 { font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl)); }
h2 { font-size: clamp(var(--text-2xl), 3.5vw, var(--text-4xl)); }
h3 { font-size: clamp(var(--text-xl), 2.5vw, var(--text-3xl)); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-text-primary);
  max-width: 68ch;
}

p + p { margin-top: var(--space-4); }

strong { font-weight: var(--weight-semibold); color: var(--color-text-primary); }
em { font-style: italic; }

/* Mono label — section metadata */
.mono-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  letter-spacing: var(--tracking-wide);
  display: block;
  margin-bottom: var(--space-4);
}

.mono-label-cyan {
  color: var(--color-cyan);
}

/* Section headline pattern */
.section-headline {
  font-family: var(--font-heading);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-4);
}

.section-subhead {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
  max-width: 60ch;
}

/* === NAVIGATION === */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.nav-wordmark {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  color: var(--color-text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0;
  letter-spacing: -0.01em;
}

.nav-wordmark:hover { color: var(--color-text-primary); }

.nav-cursor {
  display: inline-block;
  width: 0.55em;
  height: 1.1em;
  background: var(--color-cyan);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 1.1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-link {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 120ms ease;
}

.nav-link:hover,
.nav-link.active { color: var(--color-cyan); }

.nav-cta {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-bg);
  background: var(--color-cyan);
  border: none;
  border-radius: var(--radius-md);
  padding: 0.5rem 1.125rem;
  cursor: pointer;
  text-decoration: none;
  transition: background 120ms ease, color 120ms ease;
  white-space: nowrap;
}

.nav-cta:hover {
  background: var(--color-cyan-deep);
  color: var(--color-text-primary);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-2);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-secondary);
  border-radius: 2px;
  transition: all 200ms ease;
}

.nav-mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
}

.nav-mobile-menu.open { display: flex; }

.nav-mobile-link {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-semibold);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 120ms ease;
}

.nav-mobile-link:hover { color: var(--color-cyan); }

.nav-mobile-close {
  position: absolute;
  top: var(--space-6);
  right: var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  cursor: pointer;
  background: none;
  border: none;
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-weight: var(--weight-semibold);
  font-size: var(--text-base);
  padding: 0.75rem 1.5rem;
  cursor: pointer;
  text-decoration: none;
  transition: background 120ms ease, color 120ms ease, transform 80ms ease;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--color-cyan);
  color: var(--color-bg);
  border-color: var(--color-cyan);
}

.btn-primary:hover {
  background: var(--color-cyan-deep);
  color: var(--color-text-primary);
  border-color: var(--color-cyan-deep);
}

.btn-secondary {
  background: transparent;
  color: var(--color-cyan);
  border-color: var(--color-cyan);
}

.btn-secondary:hover {
  background: rgba(86, 182, 194, 0.08);
  color: var(--color-cyan);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border-color: var(--color-border);
}

.btn-ghost:hover {
  color: var(--color-text-primary);
  border-color: var(--color-text-secondary);
}

/* Mono prefix on CTA buttons */
.btn-mono-prefix::before {
  content: '$ ';
  font-family: var(--font-mono);
  font-weight: var(--weight-normal);
  opacity: 0.75;
}

/* === CARDS === */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.card-elevated {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.card-cyan {
  border-color: rgba(86, 182, 194, 0.3);
}

/* === CODE BLOCKS === */
.code-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: var(--space-6) 0;
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.code-block-filename {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  letter-spacing: var(--tracking-wide);
}

.code-block-copy {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  cursor: pointer;
  background: none;
  border: none;
  transition: color 120ms ease;
}

.code-block-copy:hover { color: var(--color-cyan); }

.code-block pre {
  padding: var(--space-5) var(--space-6);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--color-text-primary);
}

.code-block code {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

/* Inline code */
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.1em 0.4em;
  color: var(--color-cyan);
}

/* === STATUS INDICATORS === */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wide);
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  border: 1px solid;
}

.status-running {
  color: var(--color-green);
  border-color: rgba(126, 198, 153, 0.3);
  background: rgba(126, 198, 153, 0.08);
}

.status-running::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-green);
  animation: pulse-dot 2s ease-in-out infinite;
}

.status-pending {
  color: var(--color-amber);
  border-color: rgba(229, 192, 123, 0.3);
  background: rgba(229, 192, 123, 0.08);
}

.status-pending::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-amber);
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.35; }
}

/* === LEDGER / BUILD-IN-PUBLIC CARD === */
.ledger-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.ledger-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.ledger-card-title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  letter-spacing: var(--tracking-wide);
}

.ledger-card-body {
  padding: var(--space-6);
}

.ledger-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.ledger-row:last-child { border-bottom: none; }

.ledger-label {
  color: var(--color-text-secondary);
}

.ledger-value {
  color: var(--color-text-primary);
  font-weight: var(--weight-medium);
}

.ledger-value-green { color: var(--color-green); }
.ledger-value-amber { color: var(--color-amber); }
.ledger-value-muted { color: var(--color-text-muted); }

/* === DIVIDERS === */
.rule-hairline {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-8) 0;
}

.rule-cyan {
  border: none;
  border-top: 1px solid rgba(86, 182, 194, 0.25);
  margin: var(--space-8) 0;
}

/* === STEP SEQUENCE === */
.step-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.step-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-6);
  align-items: start;
}

.step-number {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-cyan);
  letter-spacing: var(--tracking-wide);
  padding-top: 0.2em;
  white-space: nowrap;
}

.step-content h4 {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.step-content p {
  color: var(--color-text-secondary);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
}

/* === FRAGMENT CALLOUT === */
.fragment-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-cyan);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  margin: var(--space-6) 0;
}

.fragment-item {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
}

/* === BLOCKQUOTE / CALLOUT === */
.callout {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-cyan);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  padding: var(--space-5) var(--space-6);
  margin: var(--space-6) 0;
}

.callout p {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  font-style: italic;
  line-height: var(--leading-relaxed);
  max-width: none;
}

.callout-attribution {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-3);
  display: block;
}

/* === FEATURE LIST === */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin: var(--space-6) 0;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

.feature-item::before {
  content: '—';
  font-family: var(--font-mono);
  color: var(--color-cyan);
  flex-shrink: 0;
  margin-top: 0.1em;
}

/* === TWO-COLUMN FIT CHECK === */
.fit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  margin: var(--space-8) 0;
}

.fit-col {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.fit-col-header {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.fit-col-yes .fit-col-header { color: var(--color-green); }
.fit-col-no  .fit-col-header { color: var(--color-text-muted); }

.fit-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.fit-list-item {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.fit-col-yes .fit-list-item::before {
  content: '✓';
  font-family: var(--font-mono);
  color: var(--color-green);
  flex-shrink: 0;
}

.fit-col-no .fit-list-item::before {
  content: '×';
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  flex-shrink: 0;
}

/* === CHANNEL CARDS === */
.channel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-4);
  margin: var(--space-8) 0;
}

.channel-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: border-color 200ms ease;
}

.channel-card:hover { border-color: rgba(86, 182, 194, 0.4); }

.channel-name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.channel-handle {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-cyan);
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-4);
  display: block;
}

.channel-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* === STACK TABLE === */
.stack-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  margin: var(--space-6) 0;
}

.stack-table th {
  text-align: left;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.stack-table td {
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  vertical-align: top;
}

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

.stack-tool-name {
  color: var(--color-text-primary);
  font-weight: var(--weight-medium);
}

.stack-tool-role {
  color: var(--color-text-secondary);
  font-size: var(--text-xs);
}

/* === ROADMAP === */
.roadmap-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: var(--space-6) 0;
}

.roadmap-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
}

.roadmap-item:last-child { border-bottom: none; }

.roadmap-check {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  flex-shrink: 0;
  padding-top: 0.1em;
}

.roadmap-check.done { color: var(--color-green); }
.roadmap-check.delayed { color: var(--color-amber); }

.roadmap-content {
  flex: 1;
}

.roadmap-title {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.roadmap-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

/* === LOG ENTRY === */
.log-entry {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-6);
}

.log-entry-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-2);
}

.log-entry-meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: var(--tracking-wide);
}

.log-entry-body {
  padding: var(--space-6);
}

.log-entry-title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-6);
}

.log-section-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  margin-bottom: var(--space-3);
  margin-top: var(--space-6);
  display: block;
}

.log-section-label:first-child { margin-top: 0; }

/* === HERO SECTION === */
.hero {
  padding: clamp(5rem, 12vw, 9rem) 0 clamp(4rem, 8vw, 7rem);
  position: relative;
}

.hero-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-cyan);
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-6);
  display: block;
}

.hero-headline {
  font-family: var(--font-heading);
  font-size: clamp(var(--text-3xl), 5.5vw, var(--text-6xl));
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-6);
  max-width: 16ch;
}

.hero-headline span { color: var(--color-cyan); }

.hero-subhead {
  font-size: clamp(var(--text-base), 2vw, var(--text-xl));
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 52ch;
  margin-bottom: var(--space-10);
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-8);
}

.hero-meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: var(--tracking-wide);
}

/* === PAGE HEADER (inner pages) === */
.page-header {
  padding: clamp(3rem, 7vw, 6rem) 0 clamp(2rem, 4vw, 4rem);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-16);
}

.page-header-headline {
  font-family: var(--font-heading);
  font-size: clamp(var(--text-3xl), 4.5vw, var(--text-5xl));
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.page-header-subhead {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 56ch;
}

/* === SECTION WRAPPER === */
.section {
  padding: var(--section-gap) 0;
}

.section-alt {
  padding: var(--section-gap) 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

/* === FOOTER === */
.footer {
  padding: var(--space-16) 0 var(--space-12);
  border-top: 1px solid var(--color-border);
  margin-top: var(--section-gap);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-8);
  align-items: start;
  margin-bottom: var(--space-12);
}

.footer-wordmark {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: var(--weight-medium);
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  margin-bottom: var(--space-3);
  text-decoration: none;
}

.footer-wordmark:hover { color: var(--color-text-primary); }

.footer-tagline {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: var(--tracking-wide);
  display: block;
  margin-bottom: var(--space-6);
}

.footer-social {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer-social-link {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: var(--tracking-wide);
  transition: color 120ms ease;
}

.footer-social-link:hover { color: var(--color-cyan); }

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: flex-end;
}

.footer-nav-link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 120ms ease;
}

.footer-nav-link:hover { color: var(--color-cyan); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.footer-legal {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: var(--tracking-wide);
}

/* === SCROLL REVEAL === */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 400ms ease, transform 400ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === FOCUS STYLES === */
:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* === SELECTION === */
::selection {
  background: rgba(86, 182, 194, 0.2);
  color: var(--color-text-primary);
}

/* === SCROLLBAR === */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-text-muted); }

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }

  .hero-headline { font-size: clamp(var(--text-3xl), 8vw, var(--text-4xl)); }

  .fit-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-nav {
    align-items: flex-start;
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-4);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
    align-items: flex-start;
  }

  .step-item {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .channel-grid {
    grid-template-columns: 1fr;
  }

  .hero-cta-group {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .container,
  .container-prose,
  .container-wide {
    padding: 0 var(--space-4);
  }

  .card,
  .card-elevated,
  .ledger-card-body,
  .log-entry-body {
    padding: var(--space-4);
  }
}

/* === REDUCED MOTION === */
@media (prefers-reduced-motion: reduce) {
  .nav-cursor { animation: none; opacity: 1; }
  .status-running::before { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}