/* =============================================================================
   Precision engineering / F1-telemetry UI, light instrument theme
   Tokens: :root. Ambient: /js/ambient.js · prefers-reduced-motion respected
   ============================================================================= */

:root {
  --bg-primary: #f0f1ef;
  --bg-secondary: #e8e9e6;
  --surface-1: #ffffff;
  --surface-2: #fafaf8;
  --border: rgba(20, 24, 32, 0.08);
  --border-strong: rgba(20, 24, 32, 0.16);
  --text-primary: #141820;
  --text-secondary: #4a5058;
  --text-dim: #6d747c;
  /* Ferrari red: use sparingly (CTA, key metrics, active) */
  --accent-red: #e10600;
  --accent-red-soft: rgba(225, 6, 0, 0.1);
  --accent-steel: #2d3339;
  --accent-data: #4a6f8a;
  /* Legacy names map to the new steel / data palette (no neon cyan) */
  --accent-cyan: var(--accent-data);
  --accent-blue: #6b8aa4;
  --accent-gold: var(--accent-steel);
  --shadow-card: 0 1px 0 rgba(255, 255, 255, 0.9) inset, 0 4px 24px rgba(20, 24, 32, 0.06),
    0 14px 48px rgba(20, 24, 32, 0.04);
  --shadow-hover: 0 8px 32px rgba(20, 24, 32, 0.08), 0 1px 0 rgba(255, 255, 255, 0.95) inset;
  --radius-xl: 22px;
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-chip: 6px;
  --font-display: "Syne", system-ui, sans-serif;
  --font-body: "DM Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --section-pad: clamp(3.75rem, 8vw, 6.75rem);
  --content-max: 76rem;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 0.14s var(--ease-out-expo);
  --transition-med: 0.26s var(--ease-out-expo);
}

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

html {
  color-scheme: light;
  scroll-behavior: smooth;
  scroll-padding-top: 5.25rem;
}

body.site {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-secondary);
  background: var(--bg-primary);
  background-image: linear-gradient(180deg, #f6f6f4 0%, var(--bg-primary) 22%, var(--bg-secondary) 100%);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Ambient layers */
.ambient-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.55;
}

@media (max-width: 768px) {
  .ambient-canvas {
    opacity: 0.35;
  }
}

.ambient-vignette {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(ellipse 90% 60% at 50% 0%, rgba(255, 255, 255, 0.65), transparent 48%),
    radial-gradient(ellipse 50% 45% at 100% 100%, rgba(74, 111, 138, 0.04), transparent 50%);
}

.ambient-noise {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.022;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.site-main,
.site-nav-wrap {
  position: relative;
  z-index: 4;
}

/* ---------- Navigation ---------- */
.site-nav-wrap {
  padding: max(1rem, env(safe-area-inset-top, 0px)) 1rem 0;
  max-width: var(--content-max);
  margin: 0 auto;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 1.35rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--border);
  backdrop-filter: blur(20px) saturate(1.1);
  -webkit-backdrop-filter: blur(20px) saturate(1.1);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.95) inset, 0 8px 32px rgba(20, 24, 32, 0.06);
  transition: background var(--transition-med), border-color var(--transition-med), box-shadow var(--transition-med);
}

.site-nav--scrolled {
  background: rgba(255, 255, 255, 0.94);
  border-color: var(--border-strong);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 1) inset, 0 12px 40px rgba(20, 24, 32, 0.08);
}

.site-nav__brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.site-nav__brand:hover {
  color: var(--accent-steel);
}

.site-nav__links {
  display: none;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-family: var(--font-mono);
}

@media (min-width: 900px) {
  .site-nav__links {
    display: flex;
  }
}

.nav-link {
  color: var(--text-dim);
  text-decoration: none;
  position: relative;
  padding: 0.25rem 0;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--accent-steel);
  opacity: 0;
  transform: scaleX(0);
  transform-origin: left;
  transition: opacity var(--transition-fast), transform 0.22s var(--ease-out-expo), background var(--transition-fast);
}

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

.nav-link:hover::after,
.nav-link--active::after {
  opacity: 1;
  transform: scaleX(1);
}

.nav-link:hover:not(.nav-link--active)::after {
  background: var(--accent-steel);
}

.nav-link--active::after {
  background: var(--accent-red);
}

.nav-link--active {
  color: var(--accent-steel);
}

.nav-link:focus-visible {
  outline: 2px solid rgba(225, 6, 0, 0.35);
  outline-offset: 4px;
  border-radius: 2px;
}

.nav-link:active {
  transform: translateY(1px);
}

.site-nav__toggle {
  display: flex;
  padding: 0.35rem;
  margin-right: -0.35rem;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.site-nav__toggle:hover {
  background: rgba(20, 24, 32, 0.05);
  color: var(--accent-steel);
}

@media (min-width: 900px) {
  .site-nav__toggle {
    display: none;
  }
}

.site-nav__mobile {
  margin-top: 0.5rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid var(--border-strong);
  backdrop-filter: blur(16px);
  box-shadow: 0 12px 40px rgba(20, 24, 32, 0.08);
}

.site-nav__mobile .nav-link {
  display: flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0.35rem 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---------- Typography ---------- */
.display-hero {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.85rem, 4.5vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: -0.038em;
  color: var(--text-primary);
  margin: 0;
}

.display-hero--stacked {
  margin-top: clamp(1.15rem, 2.8vw, 1.65rem);
  line-height: 1.04;
  text-rendering: optimizeLegibility;
}

.display-hero__line {
  display: block;
}

.display-hero__line + .display-hero__line {
  margin-top: 0.03em;
}

@media (min-width: 640px) and (max-width: 1023px) {
  .display-hero--stacked {
    font-size: clamp(1.95rem, 4.1vw, 2.75rem);
    line-height: 1.045;
  }
}

.heading-section {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.65rem, 3.2vw, 2.45rem);
  line-height: 1.12;
  letter-spacing: -0.035em;
  color: var(--text-primary);
  margin: 0;
}

.heading-card {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.08rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 0;
}

.body-lead {
  font-size: clamp(1.02rem, 1.8vw, 1.18rem);
  line-height: 1.68;
  color: var(--text-secondary);
  max-width: 36rem;
}

.body-text {
  color: var(--text-secondary);
  line-height: 1.72;
}

.body-text strong {
  color: var(--text-primary);
  font-weight: 600;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-steel);
  margin: 0;
}

.eyebrow--dim {
  color: #5c6369;
}

.eyebrow--gold {
  color: var(--accent-steel);
  border-left: 2px solid var(--accent-red);
  padding-left: 0.65rem;
  margin-left: -0.65rem;
}

.micro-label {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin: 0;
}

.micro-label--hero {
  margin-top: 1.2rem;
  margin-bottom: 0.35rem;
  color: var(--accent-data);
  opacity: 1;
}

/* ---------- Layout / chapters ---------- */
.chapter {
  padding: var(--section-pad) 1rem;
  max-width: var(--content-max);
  margin: 0 auto;
  position: relative;
}

.chapter--breath {
  padding-top: calc(var(--section-pad) * 1.08);
  padding-bottom: calc(var(--section-pad) * 1.08);
}

.chapter__header {
  margin-bottom: clamp(1.85rem, 3.5vw, 2.65rem);
}

.chapter__header--center {
  text-align: center;
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: clamp(1.85rem, 4vw, 2.75rem);
}

.chapter__rule {
  width: 100%;
  height: 1px;
  margin-bottom: 1.65rem;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(20, 24, 32, 0.1) 22%,
    rgba(20, 24, 32, 0.16) 50%,
    rgba(20, 24, 32, 0.09) 78%,
    transparent 100%
  );
}

.chapter__sub {
  margin-top: 0.9rem;
  font-size: 1.02rem;
  color: var(--text-secondary);
  line-height: 1.68;
  max-width: 36rem;
  margin-left: auto;
  margin-right: auto;
}

.chapter__header--center .chapter__sub {
  margin-left: auto;
  margin-right: auto;
}

/* Main rhythm + sector index (telemetry readout, desktop) */
.site-main--brand {
  counter-reset: sector 0;
  padding-bottom: clamp(2rem, 5vw, 3.5rem);
}

.site-main--brand > .chapter + .chapter {
  padding-top: calc(var(--section-pad) * 0.92);
}

.site-main--brand > .chapter.chapter--breath + .chapter {
  padding-top: var(--section-pad);
}

#reptrack-featured .chapter__header--center {
  margin-bottom: clamp(2rem, 4vw, 2.85rem);
}

.site-main--brand > section.chapter {
  counter-increment: sector;
}

.chapter--sector {
  position: relative;
}

@media (min-width: 900px) {
  .chapter--sector::before {
    content: counter(sector, decimal-leading-zero);
    position: absolute;
    top: calc(var(--section-pad) + 0.15rem);
    left: max(0.25rem, calc(50% - var(--content-max) / 2));
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.28em;
    color: var(--text-dim);
    opacity: 0.4;
    pointer-events: none;
    z-index: 0;
  }
}

/* Control-panel frame (optional section wrapper) */
.panel-frame {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface-1);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.panel-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(74, 111, 138, 0.04) 0%, transparent 45%);
  pointer-events: none;
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-chip);
  color: var(--accent-steel);
  background: rgba(20, 24, 32, 0.04);
  border: 1px solid var(--border);
}

.status-chip::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-data);
  animation: status-pulse 2.4s ease-in-out infinite;
}

.status-chip--stable::before {
  background: var(--accent-steel);
  animation: none;
}

@keyframes status-pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.45;
  }
}

@media (prefers-reduced-motion: reduce) {
  .status-chip::before {
    animation: none;
  }
}

/* ---------- Surfaces ---------- */
.surface-card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-med), border-color var(--transition-med), box-shadow var(--transition-med);
}

.surface-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(20, 24, 32, 0.07) 25%, rgba(20, 24, 32, 0.12) 50%, rgba(20, 24, 32, 0.07) 75%, transparent);
  pointer-events: none;
  opacity: 0.95;
}

.surface-card--hover:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-hover);
}

.surface-card__inner {
  position: relative;
  z-index: 1;
}

/* Telemetry-tinted modules */
.surface-card--signal {
  border-color: var(--border);
}

.surface-card--channel .sparkline path {
  transition: opacity 0.28s var(--ease-out-expo), stroke 0.28s ease;
}

.surface-card--channel:hover .sparkline path {
  opacity: 0.9;
  stroke: var(--accent-data);
}

.surface-card--prose {
  border-color: var(--border);
  background: var(--surface-2);
}

.surface-card--prose::before {
  opacity: 1;
}

.surface-card--archive {
  transition: border-color var(--transition-med), box-shadow var(--transition-med);
}

details.surface-card--archive[open] {
  border-color: rgba(20, 24, 32, 0.14);
  box-shadow: var(--shadow-hover);
}

.archive-drawer__summary {
  list-style: none;
  border-radius: calc(var(--radius-lg) - 6px);
  padding: 0.35rem 0.25rem;
  margin: -0.35rem -0.25rem;
  transition: background var(--transition-fast);
}

.archive-drawer__summary:hover {
  background: rgba(20, 24, 32, 0.04);
}

details[open] .archive-drawer__summary {
  margin-bottom: 0.25rem;
}

.surface-card--role {
  border-left: 2px solid rgba(74, 111, 138, 0.35);
}

.surface-card--role--current {
  border-left-color: var(--accent-red);
  box-shadow: var(--shadow-card);
}

.surface-card--contact {
  background: var(--surface-1);
  border-color: var(--border-strong);
}

.contact-deck {
  position: relative;
  overflow: hidden;
}

.contact-deck::after {
  content: "";
  position: absolute;
  inset: -40% -20%;
  background: radial-gradient(ellipse at 50% 0%, rgba(74, 111, 138, 0.06), transparent 55%);
  pointer-events: none;
  z-index: 0;
}

.contact-deck .surface-card__inner {
  position: relative;
  z-index: 1;
}

.experience-rail {
  position: relative;
}

/* Staggered reveal inside sections (hero metrics, stack matrix) */
.reveal-stagger__item {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.4s var(--ease-out-expo), transform 0.4s var(--ease-out-expo);
}

.reveal-section.is-visible .reveal-stagger > .reveal-stagger__item:nth-child(1) {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.04s;
}

.reveal-section.is-visible .reveal-stagger > .reveal-stagger__item:nth-child(2) {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.08s;
}

.reveal-section.is-visible .reveal-stagger > .reveal-stagger__item:nth-child(3) {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.12s;
}

.reveal-section.is-visible .reveal-stagger > .reveal-stagger__item:nth-child(4) {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.16s;
}

.reveal-section.is-visible .reveal-stagger > .reveal-stagger__item:nth-child(5) {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.2s;
}

.reveal-section.is-visible .reveal-stagger > .reveal-stagger__item:nth-child(6) {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.24s;
}

/* Mini telemetry chart in cards */
.sparkline {
  display: block;
  width: 100%;
  height: 36px;
  margin-top: 1rem;
}

.sparkline path {
  fill: none;
  stroke: var(--accent-data);
  stroke-width: 1.25;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.5;
}

/* ---------- Buttons ---------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.78rem 1.45rem;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #ffffff;
  text-decoration: none;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: var(--accent-red);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.2) inset, 0 2px 8px rgba(20, 24, 32, 0.06), 0 4px 14px rgba(225, 6, 0, 0.14);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.btn-primary:hover {
  transform: translateY(-1px);
  background: #c50500;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.18) inset, 0 4px 12px rgba(20, 24, 32, 0.08), 0 6px 18px rgba(225, 6, 0, 0.18);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.78rem 1.4rem;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid var(--border-strong);
  box-shadow: none;
  transition: border-color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast),
    color var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-secondary:hover {
  border-color: var(--accent-steel);
  background: rgba(20, 24, 32, 0.035);
  box-shadow: 0 2px 8px rgba(20, 24, 32, 0.05);
  transform: translateY(-1px);
}

.btn-secondary:active {
  transform: translateY(0);
}

.btn-muted {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-dim);
  border-radius: var(--radius-sm);
  border: 1px dashed var(--border);
  background: transparent;
  cursor: not-allowed;
}

.project-link {
  display: inline-flex;
  align-items: center;
  padding: 0.48rem 0.95rem;
  font-size: 0.75rem;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-primary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  border: 1px solid var(--border);
  transition: border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.project-link:hover {
  border-color: var(--border-strong);
  color: var(--accent-steel);
  box-shadow: 0 2px 8px rgba(20, 24, 32, 0.05);
  transform: translateY(-1px);
}

/* ---------- Tags ---------- */
.project-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.28rem 0.65rem;
  border-radius: var(--radius-chip);
  color: var(--accent-data);
  background: rgba(74, 111, 138, 0.08);
  border: 1px solid rgba(74, 111, 138, 0.18);
}

/* Details */
.details-chevron {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
}

details[open] .details-chevron {
  border-color: rgba(20, 24, 32, 0.18);
  background: rgba(20, 24, 32, 0.04);
  color: var(--accent-steel);
}

summary {
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

/* ---------- Hero (instrument layout) ---------- */
.hero {
  min-height: min(100vh, 900px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: clamp(2.35rem, 5vw, 3.65rem);
  padding: 7rem 1rem 4.25rem;
  max-width: var(--content-max);
  margin: 0 auto;
  position: relative;
}

.hero__shell {
  position: relative;
  width: 100%;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: var(--surface-1);
  box-shadow: var(--shadow-card);
  padding: clamp(1.55rem, 3.6vw, 2.75rem) clamp(1.45rem, 3.2vw, 2.5rem);
  overflow: hidden;
}

.hero__shell::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background-image: linear-gradient(rgba(20, 24, 32, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 24, 32, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.45;
  pointer-events: none;
}

.hero__shell::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.9) 0%, transparent 42%),
    radial-gradient(ellipse 70% 50% at 100% 0%, rgba(74, 111, 138, 0.06), transparent 55%);
  pointer-events: none;
}

.hero__grid {
  display: grid;
  gap: 2rem;
  align-items: stretch;
  width: 100%;
  position: relative;
  z-index: 2;
}

@media (min-width: 640px) and (max-width: 1023px) {
  .hero__grid {
    gap: 2.15rem;
  }
}

@media (min-width: 1024px) {
  .hero__grid {
    grid-template-columns: 1.06fr 0.94fr;
    gap: 2.35rem min(3.85vw, 3.5rem);
    align-items: center;
  }

  .hero__copy {
    padding-right: 0.35rem;
  }
}

.hero__copy {
  width: 100%;
  min-width: 0;
  position: relative;
  z-index: 1;
}

.hero__brand-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 1rem;
  margin-bottom: 0.35rem;
}

.hero__brand-row .hero__brand-row-label {
  margin: 0;
}

.hero__brand-sep {
  width: 1px;
  height: 0.85em;
  align-self: center;
  background: var(--border-strong);
  opacity: 0.85;
  flex-shrink: 0;
}

.hero__label-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.06rem;
  color: var(--text-primary);
  margin: 0;
  letter-spacing: -0.03em;
}

.hero__kicker {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin: 0.75rem 0 0;
  max-width: 40rem;
  line-height: 1.5;
}

.hero__kicker strong {
  color: var(--text-primary);
  font-weight: 600;
}

.hero__support-line {
  margin: 1.35rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.mono-nums {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* Performance panel (right column) */
.performance-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  padding: 1.3rem 1.35rem 1.4rem 1.45rem;
  border-radius: var(--radius-md);
  background: var(--surface-2);
  border: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.85) inset;
  will-change: transform;
  overflow: hidden;
  z-index: 1;
}

.performance-panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, rgba(225, 6, 0, 0.75) 0%, rgba(225, 6, 0, 0.2) 35%, rgba(45, 51, 57, 0.35) 100%);
  border-radius: var(--radius-md) 0 0 var(--radius-md);
  opacity: 0.72;
  pointer-events: none;
}

.performance-panel__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem 1rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--border);
}

.performance-panel__badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-red);
  padding: 0.35rem 0.72rem;
  border-radius: var(--radius-chip);
  background: var(--accent-red-soft);
  border: 1px solid rgba(225, 6, 0, 0.18);
}

.performance-panel__body {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.64;
  color: var(--text-secondary);
}

.performance-panel__metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem 1rem;
}

@media (max-width: 420px) {
  .performance-panel__metrics {
    grid-template-columns: 1fr;
  }
}

.perf-metric {
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius-sm);
  background: var(--surface-1);
  border: 1px solid var(--border);
}

.perf-metric__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.5rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-data);
  margin-bottom: 0.35rem;
}

.perf-metric__value {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-primary);
}

.performance-panel__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.perf-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding-top: 0.35rem;
  margin-top: 0.15rem;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.perf-status__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-data);
  flex-shrink: 0;
  animation: status-pulse 2s ease-in-out infinite;
}

.perf-status__label {
  color: var(--text-dim);
}

.perf-status__value {
  color: var(--accent-steel);
  margin-left: auto;
}

@media (prefers-reduced-motion: reduce) {
  .perf-status__dot {
    animation: none;
  }
}

.performance-panel__scan {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(74, 111, 138, 0.25), transparent);
  opacity: 0.55;
  pointer-events: none;
  animation: panel-scan 4.5s ease-in-out infinite;
}

@media (prefers-reduced-motion: reduce) {
  .performance-panel__scan {
    animation: none;
    opacity: 0;
  }
}

@keyframes panel-scan {
  0%,
  100% {
    transform: translateY(0);
    opacity: 0.15;
  }
  50% {
    transform: translateY(120px);
    opacity: 0.38;
  }
}

.hero__quick-row {
  margin-top: clamp(2.6rem, 5vw, 3.6rem);
  position: relative;
  z-index: 2;
}

@media (max-width: 639px) {
  .hero {
    min-height: unset;
    padding-top: 5.5rem;
    padding-bottom: 2.85rem;
    gap: 1.85rem;
  }

  .hero__shell {
    padding: 1.2rem 1.05rem;
  }

  .display-hero--stacked {
    font-size: clamp(1.72rem, 7.2vw, 2.28rem);
    line-height: 1.045;
    letter-spacing: -0.036em;
  }

  .display-hero__line + .display-hero__line {
    margin-top: 0.06em;
  }

  .hero__kicker {
    font-size: 0.625rem;
    letter-spacing: 0.11em;
    line-height: 1.55;
  }

  .hero__support-line {
    margin-top: 1.15rem;
    font-size: 0.625rem;
  }

  .micro-label--hero {
    font-size: 0.6rem;
    letter-spacing: 0.16em;
    margin-top: 1.05rem;
  }

  .performance-panel {
    padding: 1.15rem 1.1rem 1.25rem 1.25rem;
    gap: 1rem;
  }

  .performance-panel__body {
    font-size: 0.9rem;
    line-height: 1.62;
  }

  .performance-panel__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .performance-panel__actions .btn-primary,
  .performance-panel__actions .btn-secondary {
    width: 100%;
    justify-content: center;
    min-height: 2.75rem;
  }

  .perf-status__value {
    margin-left: 0;
    width: 100%;
  }

  .chapter {
    padding-left: max(1rem, env(safe-area-inset-left, 0px));
    padding-right: max(1rem, env(safe-area-inset-right, 0px));
  }

  .chapter__header--center {
    margin-bottom: clamp(1.75rem, 4vw, 2.5rem);
  }

  .stack-matrix .surface-card--channel {
    padding: 1.35rem 1.25rem;
  }

  .hero__quick-row {
    margin-top: 2.1rem;
  }
}

/* ---------- Reveal ---------- */
.reveal-section,
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.45s var(--ease-out-expo), transform 0.45s var(--ease-out-expo);
}

.reveal-section.is-visible,
.reveal.is-visible,
.reveal.show {
  opacity: 1;
  transform: translateY(0);
}

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

/* ---------- Lists ---------- */
.list-check {
  list-style: none;
  margin: 0;
  padding: 0;
}

.list-check li {
  position: relative;
  padding-left: 1.2rem;
  margin-bottom: 0.55rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.58;
}

.list-check li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  border-radius: 1px;
  background: var(--accent-data);
}

#experience article ul {
  list-style: disc;
  padding-left: 1.25rem;
}

#experience article ul li {
  color: var(--text-secondary);
}

#experience article ul li::marker {
  color: var(--accent-data);
}

.timeline-accent {
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--accent-steel), var(--accent-data));
  opacity: 0.55;
  flex-shrink: 0;
}

/* ---------- Contact ---------- */
.link-contact {
  font-weight: 600;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-primary);
  text-decoration: none;
  border-bottom: 1px solid rgba(20, 24, 32, 0.18);
  padding-bottom: 2px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.link-contact:hover {
  color: var(--accent-steel);
  border-color: rgba(225, 6, 0, 0.32);
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal-section,
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .reveal-stagger__item {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .surface-card--hover:hover {
    transform: none;
  }

  .btn-primary:hover,
  .btn-secondary:hover {
    transform: none;
  }

  .btn-secondary:hover {
    box-shadow: none;
  }

  .project-link:hover {
    transform: none;
    box-shadow: none;
  }

  .nav-link:active {
    transform: none;
  }
}

.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}