/* ----- Reset & base ----- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --bg: #0b0d10;
  --bg-alt: #101318;
  --surface: #14181d;
  --surface-2: #1a1f26;
  --border: #232a33;
  --text: #e8eaed;
  --text-muted: #9aa4b2;
  --text-dim: #6b7380;
  /* Blue — primary, cool, present day */
  --accent: #60a5fa;
  --accent-strong: #3b82f6;
  --accent-soft: rgba(96, 165, 250, 0.12);
  --accent-glow: rgba(96, 165, 250, 0.35);
  /* Copper — secondary, warm, origin story & highlights */
  --accent-warm: #e48a42;
  --accent-warm-strong: #d97b2f;
  --accent-warm-soft: rgba(228, 138, 66, 0.12);
  --accent-warm-glow: rgba(228, 138, 66, 0.3);
  /* Neutral — opleiding era */
  --accent-neutral: #9aa4b2;
  --accent-neutral-soft: rgba(154, 164, 178, 0.1);
  --radius: 14px;
  --radius-sm: 8px;
  --max-width: 1080px;
  --shadow-lg: 0 20px 60px -20px rgba(0, 0, 0, 0.6);
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', 'Courier New', monospace;
}

/* ----- Custom scrollbar ----- */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--surface-2) var(--bg);
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
::-webkit-scrollbar-thumb {
  background: var(--surface-2);
  border: 2px solid var(--bg);
  border-radius: 10px;
  transition: background 0.2s ease;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}
::-webkit-scrollbar-corner {
  background: var(--bg);
}

/* ----- Scroll progress bar ----- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(
    90deg,
    var(--accent) 0%,
    var(--accent-warm) 35%,
    var(--accent-warm-strong) 70%,
    var(--accent-warm) 100%
  );
  z-index: 100;
  pointer-events: none;
  box-shadow: 0 0 10px var(--accent-warm-glow),
              0 0 3px rgba(242, 168, 104, 0.6);
}

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

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg);
  background-image:
    repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.028) 0 1px, transparent 1px 38px),
    repeating-linear-gradient(-45deg, rgba(255, 255, 255, 0.028) 0 1px, transparent 1px 38px);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover,
a:focus-visible {
  color: var(--accent-strong);
}

h1, h2, h3 {
  line-height: 1.2;
  margin: 0 0 0.6em;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2rem, 5vw + 1rem, 3.75rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.5rem, 2.2vw + 0.8rem, 2.25rem);
  margin-bottom: 1.5rem;
}

h3 {
  font-size: 1.15rem;
}

p {
  margin: 0 0 1em;
}

ul,
ol {
  padding: 0;
  margin: 0;
  list-style: none;
}

/* ----- Utilities ----- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 4rem 0;
}

.section-alt {
  position: relative;
  background-color: var(--bg-alt);
  background-image:
    linear-gradient(135deg, transparent 36%, rgba(228, 138, 66, 0.08) 50%, transparent 64%),
    repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.04) 0 1px, transparent 1px 42px),
    repeating-linear-gradient(-45deg, rgba(255, 255, 255, 0.04) 0 1px, transparent 1px 42px);
  background-size: 200% 200%, 42px 42px, 42px 42px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
  isolation: isolate;
}

.section-alt::before,
.section-alt::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: min(720px, 80%);
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(96, 165, 250, 0.35) 25%,
    rgba(228, 138, 66, 0.6) 50%,
    rgba(96, 165, 250, 0.35) 75%,
    transparent 100%
  );
  pointer-events: none;
  z-index: 2;
}

.section-alt::before { top: 0; }
.section-alt::after { bottom: 0; }

.section-alt > .container {
  position: relative;
  z-index: 1;
}

.section-num {
  display: inline-block;
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.8em;
  margin-right: 0.6rem;
  opacity: 0.85;
  letter-spacing: 0.05em;
}

.accent {
  color: var(--accent);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 1rem;
}

/* Terminal-style eyebrow in the hero */
.terminal-line {
  font-family: var(--font-mono);
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.6ch;
}

.terminal-line .prompt {
  color: var(--accent-warm);
}

.terminal-line .cmd {
  color: var(--accent);
}

.terminal-line .cursor {
  display: inline-block;
  width: 8px;
  height: 1.05em;
  background: var(--accent);
  vertical-align: -0.12em;
  margin-left: 2px;
  animation: terminalBlink 1.05s steps(2) infinite;
  box-shadow: 0 0 6px var(--accent-glow);
}

@keyframes terminalBlink {
  50% { opacity: 0; }
}

.lead {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 46ch;
}

.hero-intro {
  color: var(--text-muted);
  font-size: 1rem;
  margin: 0 0 1.1rem;
  max-width: 46ch;
  font-style: italic;
  opacity: 0.9;
}

.skip-link {
  position: absolute;
  top: -999px;
  left: 0;
  background: var(--accent);
  color: #000;
  padding: 0.6rem 1rem;
  z-index: 100;
}
.skip-link:focus {
  top: 0;
}

/* ----- Header / nav ----- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 13, 16, 0.8);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
  gap: 1rem;
}

.logo {
  color: var(--text);
  font-weight: 800;
  letter-spacing: 0.02em;
}

.logo-mark {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.95rem;
  border: 1px solid var(--border);
}

.nav-menu {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav-menu a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.35rem 0.1rem;
  position: relative;
  transition: color 0.2s ease;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -4px;
  height: 2px;
  background: var(--accent);
  transition: right 0.25s ease;
  border-radius: 2px;
}

.nav-menu a:hover,
.nav-menu a:focus-visible,
.nav-menu a.is-active {
  color: var(--text);
}

.nav-menu a:hover::after,
.nav-menu a:focus-visible::after,
.nav-menu a.is-active::after {
  right: 0;
}

.nav-menu a.is-active {
  color: var(--accent);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  width: 44px;
  height: 44px;
  padding: 0;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  align-items: center;
  justify-content: center;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded='true'] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded='true'] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded='true'] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ----- Hero ----- */
.hero {
  position: relative;
  padding: clamp(4rem, 10vw, 7rem) 0 clamp(3rem, 8vw, 6rem);
  overflow: hidden;
}

.hero-inner {
  position: relative;
  z-index: 1;
}

.hero-glow {
  position: absolute;
  top: -15%;
  right: -10%;
  width: 720px;
  height: 720px;
  max-width: 95vw;
  max-height: 95vw;
  background:
    radial-gradient(circle at 30% 30%, rgba(96, 165, 250, 0.32) 0%, transparent 55%),
    radial-gradient(circle at 72% 62%, rgba(228, 138, 66, 0.38) 0%, transparent 52%),
    radial-gradient(circle at 55% 80%, rgba(217, 123, 47, 0.22) 0%, transparent 45%);
  filter: blur(30px);
  z-index: 0;
  pointer-events: none;
}

/* Diamond grid behind the hero content — copper + blue crossed */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(45deg, rgba(228, 138, 66, 0.1) 1px, transparent 1px),
    linear-gradient(-45deg, rgba(96, 165, 250, 0.075) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(ellipse at 50% 40%, black 5%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, black 5%, transparent 78%);
  pointer-events: none;
  z-index: 0;
}

/* Diagonal copper streak, echoing the reference image */
.hero-streak {
  position: absolute;
  top: -10%;
  left: 34%;
  width: 3px;
  height: 135%;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(228, 138, 66, 0.9) 40%,
    #f7b377 50%,
    rgba(228, 138, 66, 0.9) 60%,
    transparent 100%
  );
  transform: rotate(22deg);
  transform-origin: top center;
  opacity: 0.85;
  filter: blur(0.4px);
  box-shadow:
    0 0 36px rgba(228, 138, 66, 0.7),
    0 0 8px rgba(247, 179, 119, 0.9);
  pointer-events: none;
  z-index: 0;
}

.hero-streak--alt {
  left: 76%;
  top: -20%;
  height: 130%;
  width: 2px;
  transform: rotate(22deg);
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(96, 165, 250, 0.8) 42%,
    #b5d5ff 52%,
    rgba(96, 165, 250, 0.8) 62%,
    transparent 100%
  );
  box-shadow: 0 0 28px rgba(96, 165, 250, 0.65);
  opacity: 0.7;
}

.cta-group {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.3rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.1s ease, background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  min-height: 44px;
}

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

.btn-primary {
  background: var(--accent);
  color: #0b0d10;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--accent-strong);
  color: #fff;
}

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

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

/* ----- About ----- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.about-card {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, transparent 40%),
    linear-gradient(225deg, rgba(228, 138, 66, 0.025) 0%, transparent 35%),
    var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    var(--shadow-lg);
}

.about-card h3 {
  margin-top: 0;
  color: var(--text);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.fact-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 0;
  border-bottom: 1px dashed var(--border);
  font-size: 0.95rem;
}

.fact-list li:last-child {
  border-bottom: none;
}

.fact-list span {
  color: var(--text-muted);
}

/* ----- Principles ----- */
.principle-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  counter-reset: principle;
  margin-top: 0.5rem;
}

.principle-list li {
  position: relative;
  padding: 1.4rem 1.4rem 1.4rem 3.5rem;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, transparent 40%),
    linear-gradient(225deg, rgba(228, 138, 66, 0.025) 0%, transparent 35%),
    var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  counter-increment: principle;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.principle-list li::before {
  content: counter(principle, decimal-leading-zero);
  position: absolute;
  top: 1.3rem;
  left: 1.4rem;
  color: var(--accent-warm);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 12px rgba(228, 138, 66, 0.35);
}

.principle-list h3 {
  margin: 0 0 0.4rem;
  color: var(--text);
  font-size: 1.05rem;
}

.principle-list p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

@media (min-width: 720px) {
  .principle-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem 1.5rem;
  }
}

.principle-tagline {
  position: relative;
  overflow: hidden;
  margin-top: 2rem;
  padding: 1.6rem 1.85rem;
  border-left: 3px solid var(--accent-warm);
  background:
    linear-gradient(135deg, rgba(96, 165, 250, 0.08) 0%, rgba(228, 138, 66, 0.12) 100%),
    var(--surface);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.principle-tagline::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(45deg, rgba(228, 138, 66, 0.1) 1px, transparent 1px),
    linear-gradient(-45deg, rgba(96, 165, 250, 0.08) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: linear-gradient(to right, transparent 0%, black 35%, black 65%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 35%, black 65%, transparent 100%);
  pointer-events: none;
  opacity: 0.75;
}

.principle-tagline > * {
  position: relative;
  z-index: 1;
}

.tagline-lead {
  margin: 0 0 0.4rem;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.5;
}

.tagline-sub {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* ----- Horizontal timeline: one card at a time (reis door de tijd) ----- */
.experience-intro {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 52ch;
  margin: 0 0 0.5rem;
}

.tl-pin {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: stretch;
  padding: 3rem 0 4rem;
  overflow: hidden;
}

.tl-indicator {
  display: flex;
  gap: 0.7rem;
  justify-content: center;
  align-items: center;
  margin-bottom: 2rem;
  z-index: 2;
}

.tl-dot-mini {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--border);
  transition: background 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.tl-dot-mini.is-active {
  background: var(--accent);
  transform: scale(1.4);
  box-shadow: 0 0 10px rgba(96, 165, 250, 0.7);
}

.tl-dot-mini.is-past {
  background: var(--accent-warm);
  box-shadow: 0 0 8px rgba(228, 138, 66, 0.55);
}

.tl-viewport {
  width: 100%;
  overflow: hidden;
  flex: 1 1 auto;
  display: flex;
  align-items: center;
}

.tl-track {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
  width: max-content;
  will-change: transform;
}

.tl-item {
  flex: 0 0 100vw;
  box-sizing: border-box;
  padding: 0 8vw;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tl-card {
  width: 100%;
  max-width: 640px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.035) 0%, transparent 45%),
    linear-gradient(225deg, rgba(228, 138, 66, 0.03) 0%, transparent 35%),
    var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.25rem 2.25rem 2rem;
  position: relative;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    0 20px 60px -30px rgba(0, 0, 0, 0.6);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  will-change: opacity, filter, transform;
}

.tl-item.is-active .tl-card {
  border-color: var(--accent);
  box-shadow: 0 25px 80px -25px rgba(96, 165, 250, 0.35),
              0 0 0 1px rgba(96, 165, 250, 0.25);
}

.tl-year {
  display: inline-block;
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  margin-bottom: 1rem;
  padding: 0.35rem 0.85rem;
  background: var(--accent-soft);
  border: 1px solid var(--accent-soft);
  border-radius: 999px;
}

/* ----- Era-tinting in the timeline ----- */
.tl-item[data-era="school"] .tl-year {
  color: var(--accent-neutral);
  background: var(--accent-neutral-soft);
  border-color: rgba(154, 164, 178, 0.2);
}

.tl-item[data-era="hatraco"] .tl-year {
  color: var(--accent-warm);
  background: var(--accent-warm-soft);
  border-color: rgba(228, 138, 66, 0.25);
}

.tl-item[data-era="hatraco"].is-active .tl-card {
  border-color: var(--accent-warm);
  box-shadow: 0 25px 80px -25px var(--accent-warm-glow),
              0 0 0 1px rgba(228, 138, 66, 0.25);
}

.tl-item[data-era="consultant"] .tl-year {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: rgba(96, 165, 250, 0.3);
}

.tl-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  line-height: 1.25;
}

.tl-card h3 .muted {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.85em;
}

.tl-company {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 0 0 1rem;
}

.tl-card p:last-child {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.65;
}

.tl-hint {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.78rem;
  margin: 1.5rem 0 0;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.75;
}

/* Mobile: native horizontal swipe with snap, no pin */
@media (max-width: 899px) {
  .tl-pin {
    min-height: auto;
    padding: 1.25rem 0 1.5rem;
    overflow: hidden;
  }
  .tl-viewport {
    width: 100%;
    max-width: 100vw;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .tl-viewport::-webkit-scrollbar {
    display: none;
  }
  .tl-track {
    width: max-content;
    min-width: 100%;
  }
  .tl-item {
    flex: 0 0 100vw;
    width: 100vw;
    max-width: 100vw;
    padding: 0.5rem 1rem;
    box-sizing: border-box;
    scroll-snap-align: center;
    scroll-snap-stop: always;
  }
  .tl-card {
    padding: 1.25rem 1.25rem 1.15rem;
    max-width: none;
    word-wrap: break-word;
    overflow-wrap: break-word;
  }
  .tl-card h3 {
    font-size: 1.1rem;
    line-height: 1.3;
  }
  .tl-card p:last-child {
    font-size: 0.9rem;
    line-height: 1.55;
  }
  .tl-company {
    font-size: 0.85rem;
  }
  .tl-year {
    font-size: 0.7rem;
    padding: 0.3rem 0.65rem;
    margin-bottom: 0.75rem;
  }
  .tl-indicator {
    margin-bottom: 1rem;
    gap: 0.55rem;
  }
  .tl-dot-mini {
    width: 8px;
    height: 8px;
  }
}

@media (min-width: 900px) {
  .tl-card {
    padding: 2.5rem 2.75rem 2.25rem;
  }
}

/* ----- Skills ----- */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.skill-card {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, transparent 40%),
    linear-gradient(225deg, rgba(228, 138, 66, 0.025) 0%, transparent 35%),
    var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.skill-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.skill-card h3 {
  margin-top: 0;
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.skill-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.chip-list li {
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  font-size: 0.82rem;
  color: var(--text);
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.chip-list li:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.chip-list-soft li {
  background: transparent;
  color: var(--text-muted);
  font-family: 'Inter', system-ui, sans-serif;
  letter-spacing: 0;
}

.chip-list-soft li:hover {
  border-color: var(--accent);
  color: var(--text);
  background: transparent;
}

/* ----- Contact ----- */
.contact {
  position: relative;
  overflow: hidden;
}

.contact::before {
  content: '';
  position: absolute;
  top: 10%;
  right: -10%;
  width: 500px;
  height: 500px;
  max-width: 80vw;
  max-height: 80vw;
  background: radial-gradient(
    circle at center,
    rgba(228, 138, 66, 0.14) 0%,
    rgba(96, 165, 250, 0.08) 40%,
    transparent 70%
  );
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
}

.contact > .container {
  position: relative;
  z-index: 1;
}

.contact .lead {
  max-width: 52ch;
  margin-bottom: 1.5rem;
}

.contact-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.contact-note {
  margin-top: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* ----- Footer ----- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  color: var(--text-dim);
  font-size: 0.85rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-between;
  align-items: center;
}

/* ----- Focus states ----- */
a:focus-visible,
button:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ----- Responsive ----- */
@media (min-width: 640px) {
  .section {
    padding: 5rem 0;
  }
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .about-grid {
    grid-template-columns: 1.6fr 1fr;
    align-items: start;
    gap: 3rem;
  }
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
  }
  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem 1.25rem 1rem;
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease;
  }
  .nav-menu.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-menu li {
    border-top: 1px solid var(--border);
  }
  .nav-menu a {
    display: block;
    padding: 0.9rem 0;
    font-size: 1rem;
  }
  .nav {
    position: relative;
  }
}

/* ----- Level 3 animations: gradient shimmer + glow pulse ----- */
@keyframes heroGlowPulse {
  0%, 100% { opacity: 0.85; filter: blur(30px); }
  50% { opacity: 1; filter: blur(42px); }
}

.hero-glow {
  animation: heroGlowPulse 8s ease-in-out infinite;
}

@keyframes accentShimmer {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

.hero h1 .accent {
  background: linear-gradient(
    90deg,
    var(--accent) 0%,
    #a5c5ff 25%,
    var(--accent) 50%,
    #a5c5ff 75%,
    var(--accent) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  animation: accentShimmer 6s linear infinite;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .hero h1 .accent {
    -webkit-text-fill-color: var(--accent);
    color: var(--accent);
    background: none;
  }
}