/* ============================================================
   Sharior Farhan — Portfolio
   style.css — single stylesheet, organized top-to-bottom:
   1. Tokens & reset          5. Sections (about → contact)
   2. Utilities & animations  6. Footer
   3. Nav                     7. Responsive breakpoints
   4. Hero                    8. Reduced motion
   ============================================================ */

/* ---------- 1. Tokens & reset ---------- */
:root {
  /* Palette — restrained, near-monochrome with a cool blue accent */
  --bg: #fafafa;
  --bg-alt: #f2f3f5;
  --ink: #0c0e12;
  --ink-2: #3d434d;
  --ink-3: #6b7280;
  --line: #e4e6ea;
  --card: #ffffff;
  --accent: #2563eb;
  --accent-ink: #1d4ed8;
  --accent-soft: #eff4ff;
  --hero-bg: #05080f;
  --hero-ink: #f5f7fa;
  --hero-ink-2: #9aa4b2;

  --font-sans: "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --radius: 12px;
  --radius-lg: 18px;
  --container: 1120px;
  --shadow-card: 0 1px 2px rgba(12, 14, 18, 0.04), 0 8px 24px rgba(12, 14, 18, 0.05);
  --shadow-lift: 0 2px 4px rgba(12, 14, 18, 0.06), 0 16px 40px rgba(12, 14, 18, 0.10);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--accent-ink); text-decoration: none; }
a:hover { color: var(--accent); }

h1, h2, h3, h4, p, dl, dd, figure { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; background: none; border: 0; cursor: pointer; color: inherit; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: rgba(37, 99, 235, 0.18); }

/* Skip link — visible only on keyboard focus */
.skip-link {
  position: fixed;
  top: -48px;
  left: 16px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--ink);
  color: #fff;
  border-radius: 8px;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 12px; color: #fff; }

/* Scroll progress bar */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 150;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: 0 50%;
  will-change: transform;
}

/* ---------- 2. Utilities & animations ---------- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

.section { padding: 120px 0; }
.section-alt { background: var(--bg-alt); }

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-ink);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.025em;
  text-wrap: balance;
  margin-bottom: 40px;
}

/* Scroll-reveal: elements start hidden, .in-view added by IntersectionObserver */
.reveal, .reveal-up {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  transition-delay: calc(var(--d, 0) * 90ms);
  will-change: opacity, transform;
}
.reveal.in-view, .reveal-up.in-view {
  opacity: 1;
  transform: none;
}

/* Tag / badge rows */
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag-row li {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  color: var(--ink-2);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 22px;
  border-radius: 10px;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease),
              background 0.25s var(--ease), border-color 0.25s var(--ease);
  position: relative;
  overflow: hidden;
  will-change: transform;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 1px 2px rgba(37, 99, 235, 0.3), 0 8px 20px rgba(37, 99, 235, 0.22);
}
.btn-primary:hover {
  background: var(--accent-ink);
  color: #fff;
  box-shadow: 0 2px 4px rgba(37, 99, 235, 0.3), 0 12px 28px rgba(37, 99, 235, 0.3);
}
.btn-ghost {
  border: 1px solid rgba(154, 164, 178, 0.4);
  color: inherit;
}
.btn-ghost:hover { border-color: currentColor; color: inherit; }
.btn-icon {
  padding: 12px 14px;
  border: 1px solid rgba(154, 164, 178, 0.4);
  color: inherit;
}
.btn-icon:hover { border-color: currentColor; color: inherit; }

/* Click ripple (injected by JS) */
.btn-ripple {
  position: absolute;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.25;
  transform: scale(0);
  animation: btn-ripple 0.6s var(--ease) forwards;
  pointer-events: none;
}
@keyframes btn-ripple {
  to { transform: scale(4); opacity: 0; }
}

/* ---------- 3. Nav ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(250, 250, 250, 0.78);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  backdrop-filter: saturate(1.6) blur(14px);
  border-bottom-color: var(--line);
}
/* Over the dark hero the nav text is light */
.nav.on-hero:not(.is-scrolled) { color: var(--hero-ink); }
.nav.on-hero:not(.is-scrolled) .nav-link { color: var(--hero-ink-2); }
.nav.on-hero:not(.is-scrolled) .nav-link:hover,
.nav.on-hero:not(.is-scrolled) .nav-link.is-active { color: var(--hero-ink); }

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-weight: 600;
  font-size: 15px;
  color: inherit;
  flex-shrink: 0;
}
.nav-name { white-space: nowrap; }
.nav-brand:hover { color: inherit; }
.nav-mark {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 1;
  min-width: 0;
}
.nav-link {
  display: block;
  position: relative;
  padding: 8px 11px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink-3);
  transition: color 0.2s;
  white-space: nowrap;
}
.nav-link:hover { color: var(--ink); }
/* Animated underline */
.nav-link::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  bottom: 3px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 0.3s var(--ease);
}
.nav-link.is-active { color: var(--ink); }
.nav-link.is-active::after { transform: scaleX(1); }

.nav-cta {
  margin-left: 10px;
  padding: 9px 16px;
  border-radius: 9px;
  background: var(--accent);
  color: #fff;
  font-size: 13.5px;
  font-weight: 600;
  transition: background 0.2s, transform 0.2s var(--ease);
  white-space: nowrap;
  flex-shrink: 0;
}
.nav-cta:hover { background: var(--accent-ink); color: #fff; transform: translateY(-1px); }

/* Hamburger — hidden on desktop */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border-radius: 10px;
}
.nav-toggle span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.3s var(--ease), opacity 0.3s;
}
.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }

/* ---------- 4. Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  background: var(--hero-bg);
  color: var(--hero-ink);
  overflow: hidden;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

/* Gradient veil keeps text readable over the ripple */
.hero-veil {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(900px 560px at 16% 32%, rgba(5, 8, 15, 0.42), transparent 65%),
    linear-gradient(to bottom, rgba(5, 8, 15, 0.12), rgba(5, 8, 15, 0.38) 90%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--container);
  width: 100%;
  margin: 0 auto;
  padding: 140px 32px 100px;
}

/* Entrance animation for hero children (plays on load) */
.hero .reveal-up {
  animation: hero-in 0.9s var(--ease) both;
  animation-delay: calc(var(--d, 0) * 120ms + 150ms);
  opacity: 0;
  transform: none;
  transition: none;
}
@keyframes hero-in {
  from { opacity: 0; transform: translateY(26px); }
  to   { opacity: 1; transform: none; }
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--hero-ink-2);
  padding: 8px 16px;
  border: 1px solid rgba(154, 164, 178, 0.25);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
}
.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.5);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.5); }
  70%  { box-shadow: 0 0 0 9px rgba(52, 211, 153, 0); }
  100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); }
}

.hero-title {
  margin: 30px 0 14px;
  font-size: clamp(46px, 7.4vw, 88px);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.035em;
}

.hero-type {
  font-family: var(--font-mono);
  font-size: clamp(16px, 2vw, 21px);
  color: #7fa8f7;
  min-height: 1.6em;
}
.caret {
  display: inline-block;
  width: 9px;
  height: 1.15em;
  margin-left: 3px;
  vertical-align: text-bottom;
  background: #7fa8f7;
  animation: caret-blink 1.1s steps(1) infinite;
}
@keyframes caret-blink { 50% { opacity: 0; } }

.hero-lede {
  max-width: 560px;
  margin-top: 22px;
  font-size: 17.5px;
  line-height: 1.7;
  color: var(--hero-ink-2);
}
.hero-lede strong { color: var(--hero-ink); font-weight: 600; }

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 44px;
  margin-top: 34px;
}
.hero-facts dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.hero-facts dd { margin-top: 3px; font-size: 15px; font-weight: 500; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 38px;
}
.hero .btn-ghost, .hero .btn-icon { color: var(--hero-ink); }

.hero-scroll {
  position: absolute;
  z-index: 2;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.hero-scroll:hover { color: var(--hero-ink-2); }
.hero-scroll-line {
  width: 1px;
  height: 42px;
  background: linear-gradient(to bottom, transparent, currentColor);
  animation: scroll-hint 2.2s var(--ease) infinite;
}
@keyframes scroll-hint {
  0%   { transform: scaleY(0); transform-origin: top; }
  45%  { transform: scaleY(1); transform-origin: top; }
  55%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- 5a. About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 72px;
  align-items: start;
}

.about-portrait {
  margin-top: 44px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  max-width: 380px;
}
.about-portrait img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  filter: saturate(0.92);
  transition: transform 0.6s var(--ease), filter 0.6s var(--ease);
}
.about-portrait:hover img { transform: scale(1.03); filter: saturate(1); }

.about-copy p { margin-bottom: 20px; font-size: 16.5px; color: var(--ink-2); }
.about-copy strong { color: var(--ink); }

.about-principles {
  margin-top: 34px;
  border-top: 1px solid var(--line);
}
.about-principles li {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-3);
  font-size: 15px;
}
.about-principles span {
  display: block;
  font-weight: 600;
  font-size: 15.5px;
  color: var(--ink);
  margin-bottom: 2px;
}

/* Mini runner widget (Chrome-dino homage) — blends into the section,
   no separate card/tab chrome; the canvas's own horizon sits flush
   with the widget's bottom rule. */
.dino-widget {
  margin-top: 56px;
}
.dino-widget-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 10px;
}
.dino-widget-label { font-size: 13px; font-weight: 600; color: var(--ink-2); }
.dino-widget-status {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-3);
  text-align: right;
}
.dino-canvas {
  display: block;
  width: 100%;
  height: 140px;
  background: transparent;
  cursor: pointer;
  touch-action: manipulation;
}
.dino-widget-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-2);
}
.dino-reset {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--ink-3);
  transition: border-color 0.2s, color 0.2s;
}
.dino-reset:hover { border-color: var(--accent); color: var(--accent-ink); }

/* ---------- 5b. Experience ---------- */
/* Cartoon drone — flies from beside the heading (top right) down-left
   with scroll, landing on the helipad at the bottom of the section. */
#experience { position: relative; overflow: hidden; }
.drone-flight {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  pointer-events: none;
  will-change: transform;
}
.drone-svg { display: block; animation: drone-bob 1.6s ease-in-out infinite; }
.drone-flight.is-landed .drone-svg { animation: none; }
@keyframes drone-bob {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  50% { transform: translateY(-6px) rotate(2deg); }
}
.drone-rotor { animation: drone-spin 0.5s linear infinite; }
.drone-rotor-2 { animation-delay: -0.25s; }
@keyframes drone-spin {
  0%, 100% { transform: scaleX(1); }
  50% { transform: scaleX(0.25); }
}
.drone-flight.is-landed .drone-rotor { animation: drone-spin 1.8s linear infinite; }
.helipad {
  position: absolute;
  bottom: 18px;
  left: 40px;
  pointer-events: none;
}
@media (max-width: 820px) {
  .drone-svg { width: 64px; height: auto; }
  .helipad { left: 16px; bottom: 12px; }
  .helipad svg { width: 84px; height: auto; }
}

.xp-timeline {
  display: grid;
  gap: 18px;
  position: relative;
}

.xp-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.35s var(--ease), transform 0.35s var(--ease);
}
.xp-card:hover {
  box-shadow: var(--shadow-lift);
  transform: translateY(-2px);
}

.xp-head {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 20px;
  width: 100%;
  padding: 22px 26px;
  text-align: left;
  border-radius: var(--radius-lg);
}

.xp-logo {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent-ink);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid #dbe6fd;
}

.xp-role { display: block; font-weight: 650; font-size: 17px; letter-spacing: -0.01em; }
.xp-org { display: block; margin-top: 2px; font-size: 14px; color: var(--ink-3); }

.xp-when { text-align: right; }
.xp-dates { display: block; font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-2); }
.xp-loc { display: block; margin-top: 2px; font-size: 12.5px; color: var(--ink-3); }

.xp-chevron {
  color: var(--ink-3);
  transition: transform 0.35s var(--ease);
}
.xp-head[aria-expanded="true"] .xp-chevron { transform: rotate(180deg); }

/* Expand/collapse via CSS grid rows — GPU-friendly, no height hacks */
.xp-body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.45s var(--ease);
}
.xp-head[aria-expanded="true"] + .xp-body { grid-template-rows: 1fr; }
.xp-body-inner {
  overflow: hidden;
  min-height: 0;
  padding: 0 26px;
}
.xp-head[aria-expanded="true"] + .xp-body .xp-body-inner { padding-bottom: 26px; }

.xp-list { display: grid; gap: 10px; margin-bottom: 22px; }
.xp-list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  color: var(--ink-2);
}
.xp-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--accent);
  opacity: 0.7;
}
.xp-list strong { color: var(--ink); }

.xp-metrics {
  display: flex;
  gap: 40px;
  padding: 18px 22px;
  margin-bottom: 20px;
  background: var(--bg-alt);
  border-radius: var(--radius);
}
.metric-num {
  display: block;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--accent-ink);
  font-variant-numeric: tabular-nums;
}
.metric-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ---------- 5c. Projects ---------- */
.proj-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.proj-card {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.4s var(--ease), transform 0.4s var(--ease);
}
.proj-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lift);
}

.proj-media {
  aspect-ratio: 16 / 9;
  display: grid;
  place-items: center;
  background:
    linear-gradient(135deg, #eef1f6, #e3e8f2);
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.proj-media::after {
  /* subtle grid texture */
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(12, 14, 18, 0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(12, 14, 18, 0.035) 1px, transparent 1px);
  background-size: 28px 28px;
}
.proj-media-note {
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-3);
  padding: 6px 12px;
  border: 1px dashed rgba(107, 114, 128, 0.5);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.7);
}

.proj-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 22px 24px 24px;
  flex: 1;
}
.proj-body h3 { font-size: 18.5px; font-weight: 650; letter-spacing: -0.015em; }
.proj-body > p { font-size: 14.5px; color: var(--ink-2); }

.proj-facts { display: grid; gap: 9px; }
.proj-facts dt {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-ink);
}
.proj-facts dd { font-size: 13.5px; color: var(--ink-2); margin-top: 1px; }

.proj-links {
  margin-top: auto;
  padding-top: 6px;
  display: flex;
  gap: 18px;
  font-size: 14px;
  font-weight: 600;
}

/* ---------- 5d. Tech stack ---------- */

/* REMOVED_CUBE_START
.cube-field {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 46px 58px;
  padding: 34px 10px 44px;
  margin-bottom: 48px;
  perspective: 900px;
}

.tech-cube {
  --size: 74px;
  position: relative;
  width: var(--size);
  height: var(--size);
  padding: 0;
  transform-style: preserve-3d;
  outline-offset: 14px;
}

.cube {
  position: absolute;
  inset: 0;
  display: block;
  transform-style: preserve-3d;
  transform: rotateX(-18deg) rotateY(24deg);
  transition: transform 0.5s var(--ease);
  animation: cube-idle 9s ease-in-out infinite;
  animation-delay: calc(var(--i, 0) * -1.15s);
  will-change: transform;
}
@keyframes cube-idle {
  0%, 100% { transform: rotateX(-18deg) rotateY(20deg) translateY(0); }
  50%      { transform: rotateX(-14deg) rotateY(40deg) translateY(-7px); }
}

.tech-cube:hover .cube { animation-play-state: paused; transform: rotateX(-20deg) rotateY(42deg) translateY(-6px); }

/* Jump on click */
.tech-cube.is-jumping .cube {
  animation: cube-jump 0.9s var(--ease);
}
@keyframes cube-jump {
  0%   { transform: rotateX(-18deg) rotateY(24deg) translateY(0); }
  18%  { transform: rotateX(-16deg) rotateY(50deg) translateY(6px) scale(1.04, 0.92); }
  50%  { transform: rotateX(-24deg) rotateY(204deg) translateY(-46px) scale(0.96, 1.06); }
  78%  { transform: rotateX(-18deg) rotateY(360deg) translateY(4px) scale(1.05, 0.94); }
  100% { transform: rotateX(-18deg) rotateY(384deg) translateY(0); }
}

.cube-face {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--accent-ink);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.92), rgba(239, 244, 255, 0.88));
  border: 1px solid #cfdcfa;
  border-radius: 10px;
  backface-visibility: hidden;
}
.cf-front  { transform: translateZ(calc(var(--size) / 2)); }
.cf-back   { transform: rotateY(180deg) translateZ(calc(var(--size) / 2)); }
.cf-left   { transform: rotateY(-90deg) translateZ(calc(var(--size) / 2)); }
.cf-right  { transform: rotateY(90deg) translateZ(calc(var(--size) / 2)); }
.cf-top    { transform: rotateX(90deg) translateZ(calc(var(--size) / 2)); background: linear-gradient(145deg, #ffffff, #f0f4fd); }
.cf-bottom { transform: rotateX(-90deg) translateZ(calc(var(--size) / 2)); background: #dde6f8; }

/* Grounding shadow that reacts to the jump */
.cube-shadow {
  position: absolute;
  left: 6%;
  right: 6%;
  bottom: -26px;
  height: 12px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(12, 14, 18, 0.22), transparent);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.tech-cube.is-jumping .cube-shadow { animation: shadow-jump 0.9s var(--ease); }
REMOVED_CUBE_END
@keyframes shadow-jump {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%      { transform: scale(0.55); opacity: 0.45; }
}

/* Unified spec-sheet panel — one bordered surface, hairline rows,
   instead of eight repeated category cards. */
.stack-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.stack-row {
  display: grid;
  grid-template-columns: 168px 1fr;
  gap: 24px;
  align-items: baseline;
  padding: 20px 26px;
  border-bottom: 1px solid var(--line);
  transition: background 0.25s var(--ease);
}
.stack-row:last-child { border-bottom: none; }
.stack-row:hover { background: var(--bg-alt); }
.stack-row-label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.badge-row { display: flex; flex-wrap: wrap; gap: 8px; }
.badge-row li {
  font-size: 13px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink-2);
  transition: border-color 0.25s, color 0.25s, background 0.25s;
}
.badge-row li:hover { border-color: var(--accent); color: var(--accent-ink); }
.badge-row .badge-core {
  background: var(--accent-soft);
  border-color: #dbe6fd;
  color: var(--accent-ink);
  font-weight: 600;
}

/* ---------- 5d-2. Pac-Man arcade strip (bottom of Tech Stack) ---------- */
.pac-arcade {
  margin-top: 40px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.pac-arcade canvas {
  display: block;
  width: 100%;
  height: 80px;
}

/* ---------- 5e. Achievements ---------- */
.ach-intro {
  max-width: 620px;
  margin-bottom: 44px;
  font-size: 16px;
  color: var(--ink-2);
}

/* Vertical timeline — mirrors the Education timeline's rhythm so both
   "life narrative" sections read as one system; the champion entry
   is picked out with an accent dot and tag instead of a separate card. */
.ach-timeline {
  position: relative;
  display: grid;
  gap: 36px;
  padding-left: 8px;
}
.ach-timeline::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--line);
}
/* Paper plane that flies down the line as you scroll */
.ach-plane {
  position: absolute;
  left: 23.5px;
  top: 0;
  z-index: 1;
  color: var(--accent);
  filter: drop-shadow(0 2px 4px rgba(37, 99, 235, 0.35));
  transition: transform 0.25s ease-out;
  will-change: transform;
  pointer-events: none;
}
.ach-plane svg { display: block; transform: rotate(180deg); transition: transform 0.35s var(--ease); }
.ach-plane.is-up svg { transform: rotate(0deg); }
.ach-t-item {
  position: relative;
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 28px;
  padding-left: 44px;
}
.ach-t-dot {
  position: absolute;
  left: 11px;
  top: 7px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-3);
  box-shadow: 0 0 0 4px var(--bg), 0 0 0 5px var(--line);
}
.ach-t-featured .ach-t-dot {
  width: 13px;
  height: 13px;
  left: 9px;
  top: 5px;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--bg), 0 0 0 5px #dbe6fd, 0 0 0 9px rgba(37, 99, 235, 0.12);
}
.ach-t-when {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-3);
  padding-top: 2px;
}
.ach-t-featured .ach-t-when { color: var(--accent-ink); font-weight: 600; }
.ach-t-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #fff;
  background: var(--accent);
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 9px;
}
.ach-t-tag-quiet {
  color: var(--ink-3);
  background: var(--bg-alt);
  border: 1px solid var(--line);
}
.ach-t-body h3 {
  font-size: 17px;
  font-weight: 650;
  letter-spacing: -0.01em;
  margin-bottom: 6px;
}
.ach-t-featured .ach-t-body h3 { font-size: 20px; }
.ach-t-title { display: flex; align-items: center; gap: 9px; }
.ach-sat-icon { color: var(--accent); flex-shrink: 0; }
.ach-t-body p { font-size: 14.5px; color: var(--ink-3); max-width: 560px; }

/* ---------- 5e-2. Achievement carousel ---------- */
.carousel {
  position: relative;
  max-width: 640px;
  margin: 0 auto;
}
.carousel-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--card);
  box-shadow: var(--shadow-card);
}
.carousel-track {
  display: flex;
  transition: transform 0.6s var(--ease);
}
.carousel-slide {
  flex: 0 0 100%;
  width: 100%;
}
.carousel-slide image-slot {
  display: block;
  width: 100%;
  height: 380px;
}
.carousel-caption {
  padding: 16px 22px;
  font-size: 14px;
  color: var(--ink-3);
  text-align: center;
  border-top: 1px solid var(--line);
}
.carousel-arrow {
  position: absolute;
  top: 165px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, color 0.2s, transform 0.2s var(--ease);
}
.carousel-arrow:hover { background: var(--accent); color: #fff; transform: scale(1.05); }
.carousel-arrow-prev { left: -20px; }
.carousel-arrow-next { right: -20px; }
.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 18px;
}
.carousel-dot {
  width: 20px;
  height: 20px;
  padding: 6px;
  border: none;
  border-radius: 50%;
  background: var(--line);
  background-clip: content-box;
  cursor: pointer;
  transition: background 0.25s, transform 0.25s var(--ease);
}
.carousel-dot.is-active { background: var(--accent); transform: scale(1.35); }

@media (max-width: 720px) {
  .carousel { max-width: 100%; }
  .carousel-arrow { display: none; }
  .rocket-launch svg { width: 34px; height: auto; }
  .pac-arcade { margin-top: 30px; }
  .carousel-slide image-slot { height: 280px; }
}

/* ---------- 5e-2. Rocket launch (Achievements) ---------- */
#achievements { position: relative; overflow: hidden; }
.rocket-launch {
  position: absolute;
  right: 7%;
  bottom: -100px;
  display: flex;
  flex-direction: column;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  z-index: 1;
}
.rocket-flame {
  width: 10px;
  height: 26px;
  margin-top: -4px;
  border-radius: 50% 50% 50% 50% / 20% 20% 80% 80%;
  background: linear-gradient(to bottom, #f59e0b, #ef4444 60%, transparent);
  transform-origin: 50% 0;
  animation: rocket-flame-flicker 0.12s linear infinite alternate;
}
@keyframes rocket-flame-flicker {
  from { transform: scaleY(0.75) scaleX(0.9); opacity: 0.8; }
  to   { transform: scaleY(1.15) scaleX(1.05); opacity: 1; }
}
.rocket-launch.is-flying {
  animation: rocket-fly 2.8s cubic-bezier(0.5, 0, 0.85, 0.4) forwards;
}
@keyframes rocket-fly {
  0%   { transform: translateY(0); opacity: 0; }
  12%  { opacity: 1; }
  100% { transform: translateY(calc(-100vh - 700px)); opacity: 1; }
}
.rocket-sentinel { height: 1px; }

/* ---------- 5f. Education ---------- */
.edu-timeline {
  position: relative;
  display: grid;
  gap: 40px;
  padding-left: 8px;
}
.edu-timeline::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--line);
}
.edu-item {
  position: relative;
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 28px;
  padding-left: 44px;
}
.edu-dot {
  position: absolute;
  left: 11px;
  top: 7px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--bg-alt), 0 0 0 5px var(--line);
}
.edu-when {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-3);
  padding-top: 2px;
}
.edu-body h3 { font-size: 17.5px; font-weight: 650; letter-spacing: -0.01em; }
.edu-org { margin: 3px 0 8px; font-size: 14.5px; color: var(--accent-ink); font-weight: 500; }
.edu-body p:last-child { font-size: 14px; color: var(--ink-3); }

/* ---------- 5g. Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 72px;
  align-items: start;
}
.contact-lede { color: var(--ink-2); max-width: 420px; margin-bottom: 30px; }

.contact-list { margin-bottom: 34px; border-top: 1px solid var(--line); }
.contact-list li {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}
.contact-list span {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding-top: 3px;
}

.contact-form {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-card);
  display: grid;
  gap: 18px;
}
.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.form-field { display: grid; gap: 7px; min-width: 0; }
.form-field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-2);
}
.form-field input,
.form-field textarea {
  font: inherit;
  font-size: 14.5px;
  padding: 11px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
  color: var(--ink);
  transition: border-color 0.2s, box-shadow 0.2s;
  resize: vertical;
  min-width: 0;
  width: 100%;
}
.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.14);
}
.form-field input.is-invalid,
.form-field textarea.is-invalid { border-color: #dc2626; }

.form-status { font-size: 14px; min-height: 1.4em; color: var(--ink-3); }
.form-status.ok { color: #047857; }
.form-status.err { color: #dc2626; }

/* ---------- 6. Footer ---------- */
.footer {
  background: var(--hero-bg);
  color: var(--hero-ink-2);
  padding: 30px 0;
  font-size: 14px;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-social { display: flex; gap: 6px; }
.footer-social a {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  color: var(--hero-ink-2);
  transition: color 0.2s, background 0.2s;
}
.footer-social a:hover { color: var(--hero-ink); background: rgba(255, 255, 255, 0.06); }

.back-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid rgba(154, 164, 178, 0.3);
  border-radius: 9px;
  font-size: 13px;
  font-weight: 500;
  color: var(--hero-ink-2);
  transition: color 0.2s, border-color 0.2s, transform 0.25s var(--ease);
}
.back-top:hover { color: var(--hero-ink); border-color: var(--hero-ink-2); transform: translateY(-2px); }

/* ---------- 7. Responsive ---------- */
@media (max-width: 1024px) {
  .section { padding: 96px 0; }
  .proj-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .about-grid, .contact-grid { gap: 48px; }
}

/* Collapse to hamburger nav earlier than the main mobile breakpoint —
   gives the desktop nav room to breathe at laptop/tablet widths where
   7 links + CTA would otherwise get cramped against the brand mark. */
@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .nav-name { display: none; }
  .nav-menu {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 14px 22px 22px;
    background: rgba(250, 250, 250, 0.96);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s var(--ease), opacity 0.3s var(--ease), visibility 0s 0.3s;
  }
  .nav-menu.is-open {
    transform: none;
    opacity: 1;
    visibility: visible;
    transition-delay: 0s;
  }
  .nav-menu .nav-link { color: var(--ink-2); padding: 13px 6px; font-size: 16px; white-space: normal; }
  .nav-cta { margin: 12px 0 0; text-align: center; }
  .nav.on-hero:not(.is-scrolled) .nav-menu .nav-link { color: var(--ink-2); }
}

@media (max-width: 820px) {
  .container, .nav-inner { padding-left: 22px; padding-right: 22px; }
  .section { padding: 80px 0; }

  /* Mobile nav (superseded by the 900px breakpoint above; kept so this
     block still fully describes the collapsed nav state on its own) */
  .nav-toggle { display: flex; }
  .nav-name { display: none; }
  .nav-menu { flex-shrink: initial; }
  .nav-menu {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 14px 22px 22px;
    background: rgba(250, 250, 250, 0.96);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s var(--ease), opacity 0.3s var(--ease), visibility 0s 0.3s;
  }
  .nav-menu.is-open {
    transform: none;
    opacity: 1;
    visibility: visible;
    transition-delay: 0s;
  }
  .nav-menu .nav-link { color: var(--ink-2); padding: 13px 6px; font-size: 16px; }
  .nav-cta { margin: 12px 0 0; text-align: center; }
  .nav.on-hero:not(.is-scrolled) .nav-menu .nav-link { color: var(--ink-2); }

  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .ach-timeline { gap: 28px; }
  .ach-t-item { grid-template-columns: 1fr; gap: 6px; }
  .about-portrait { max-width: 320px; }

  .xp-head { grid-template-columns: auto 1fr auto; }
  .xp-when { display: none; }
  .xp-body-inner { padding: 0 22px; }

  .stack-row { grid-template-columns: 1fr; gap: 10px; }

  .edu-item { grid-template-columns: 1fr; gap: 6px; }

  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .proj-grid { grid-template-columns: 1fr; }
  .hero-actions .btn-primary, .hero-actions .btn-ghost { flex: 1; justify-content: center; }
  .hero-facts { gap: 12px 28px; }
  .xp-metrics { gap: 26px; flex-wrap: wrap; }
  .footer-inner { justify-content: center; text-align: center; }
}

/* ---------- 8. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal, .reveal-up { opacity: 1; transform: none; }
}