/* =========================================================
   Ronald Baby González — Personal Brand Site
   Premium editorial design system · vanilla CSS
   ========================================================= */

/* ---------- Design tokens ---------- */
:root {
  --accent: #2f9e8b;
  --accent-soft: rgba(47, 158, 139, 0.14);
  --accent-strong: #36b8a2;
  --gold: #c8a45c;

  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-serif: "Fraunces", Georgia, "Times New Roman", serif;

  --container: 1180px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius: 14px;
  --radius-sm: 9px;
  --radius-xs: 10px;
  --fs-xs: 0.72rem;
  --fs-sm: 0.82rem;
  --ls-sm: 0.12em;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.18), 0 10px 30px -18px rgba(0, 0, 0, 0.5);
  --shadow-2: 0 30px 60px -30px rgba(0, 0, 0, 0.6);
  --logo-filter: grayscale(1) brightness(0) invert(1);
  --logo-filter-hover: grayscale(1) brightness(0) invert(1);
  --logo-op: 0.6;
}

/* Dark theme (default) */
[data-theme="dark"] {
  --bg: #0d0f12;
  --bg-alt: #121519;
  --surface: #171b20;
  --surface-2: #1d2228;
  --text: #eef1f4;
  --text-soft: #b7c0c8;
  --text-mute: #828d97;
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --hero-glow: rgba(47, 158, 139, 0.16);
  color-scheme: dark;
}

/* Light theme */
[data-theme="light"] {
  --accent: #14796a;
  --accent-soft: rgba(20, 121, 106, 0.10);
  --accent-strong: #0f8d7c;
  --gold: #9a7a30;

  --bg: #f7f5f1;
  --bg-alt: #efece6;
  --surface: #ffffff;
  --surface-2: #f4f1ec;
  --text: #15191d;
  --text-soft: #3b454e;
  --text-mute: #535960;
  --border: rgba(20, 26, 32, 0.10);
  --border-strong: rgba(20, 26, 32, 0.18);
  --hero-glow: rgba(20, 121, 106, 0.12);
  color-scheme: light;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; padding: 0; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
:focus-visible {
  outline: 2px solid var(--accent-strong);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section { padding: clamp(4.5rem, 9vw, 8rem) 0; position: relative; }
.section--alt { background: var(--bg-alt); }
.eyebrow {
  font-size: 0.74rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 1rem;
}
.section__head { max-width: 760px; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.section__title {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(1.9rem, 4.2vw, 3.1rem);
  line-height: 1.08;
  letter-spacing: -0.015em;
}
.section__sub {
  margin-top: 1.1rem;
  color: var(--text-soft);
  font-size: 1.04rem;
  max-width: 640px;
}

.skip-link {
  position: fixed;
  top: -60px;
  left: 1rem;
  z-index: 1000;
  background: var(--accent);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 1rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.82rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease),
    border-color 0.25s var(--ease), color 0.25s var(--ease), box-shadow 0.25s var(--ease);
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn--sm { padding: 0.55rem 1.05rem; font-size: 0.85rem; }
.btn--primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 24px -12px var(--accent);
}
.btn--primary:hover { background: var(--accent-strong); transform: translateY(-2px); }
.btn--ghost {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border-strong);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.btn--line {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text-soft);
}
.btn--line:hover { border-color: var(--accent); color: var(--text); transform: translateY(-2px); }

/* ---------- Scroll progress ---------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--gold));
  z-index: 1001;
  transition: width 0.1s linear;
}

/* ---------- Navigation ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 900;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease), backdrop-filter 0.3s;
  border-bottom: 1px solid transparent;
}
.nav.is-stuck {
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--border);
}
.nav__inner {
  max-width: var(--container);
  margin-inline: auto;
  padding: 0.85rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.nav__brand { display: flex; align-items: center; gap: 0.7rem; }
.nav__mark {
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  border-radius: var(--radius-xs);
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--border-strong);
}
.nav__brandtext { display: flex; flex-direction: column; line-height: 1.15; }
.nav__brandtext strong { font-size: 0.94rem; font-weight: 600; }
.nav__brandtext small { font-size: var(--fs-xs); color: var(--text-mute); letter-spacing: 0.04em; }
.nav__links { display: flex; gap: 0.35rem; }
.nav__links a {
  padding: 0.5rem 0.8rem;
  font-size: 0.88rem;
  color: var(--text-soft);
  border-radius: 8px;
  position: relative;
  transition: color 0.2s var(--ease);
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0.8rem; right: 0.8rem; bottom: 0.32rem;
  height: 1.5px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.28s var(--ease);
}
.nav__links a:hover { color: var(--text); }
.nav__links a.is-active { color: var(--text); }
.nav__links a.is-active::after { transform: scaleX(1); }
.nav__actions { display: flex; align-items: center; gap: 0.6rem; }
.theme-toggle {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text-soft);
  transition: color 0.2s, border-color 0.2s, transform 0.2s;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); transform: translateY(-1px); }
.icon-sun { display: none; }
[data-theme="light"] .icon-sun { display: block; }
[data-theme="light"] .icon-moon { display: none; }
.nav__burger { display: none; flex-direction: column; gap: 5px; width: 40px; height: 40px; align-items: center; justify-content: center; border-radius: var(--radius-xs); border: 1px solid var(--border-strong); }
.nav__burger span { width: 19px; height: 2px; background: var(--text); border-radius: 2px; transition: transform 0.3s var(--ease), opacity 0.2s; }
.nav__burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.is-open span:nth-child(2) { opacity: 0; }
.nav__burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: calc(100vh - 70px);
  display: flex;
  align-items: center;
  padding: clamp(3rem, 8vh, 6rem) 0 4rem;
  overflow: hidden;
}
.hero__canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; opacity: 0.85; }
.hero__grid {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(900px 500px at 75% 12%, var(--hero-glow), transparent 60%),
    linear-gradient(180deg, transparent, var(--bg) 92%);
  pointer-events: none;
}
.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.hero__eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 1.4rem;
}
.hero__name {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(2.8rem, 8vw, 5.6rem);
  line-height: 0.98;
  letter-spacing: -0.025em;
}
.hero__role {
  margin-top: 1.2rem;
  font-size: clamp(1.05rem, 2.4vw, 1.4rem);
  color: var(--text);
  font-weight: 500;
}
.hero__statement {
  margin-top: 1.5rem;
  max-width: 540px;
  color: var(--text-soft);
  font-size: 1.06rem;
}
.hero__cta { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 2.2rem; }
.hero__cta .btn { white-space: normal; word-break: break-word; }
.hero__meta {
  display: flex;
  gap: clamp(1.5rem, 4vw, 3rem);
  margin-top: 3rem;
  flex-wrap: wrap;
}
.hero__meta li { display: flex; flex-direction: column; }
.hero__meta span {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 600;
  color: var(--text);
  line-height: 1;
}
.hero__meta small { color: var(--text-mute); font-size: var(--fs-sm); letter-spacing: 0.04em; margin-top: 0.4rem; }

.hero__card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow-2);
}
.hero__portrait {
  border-radius: var(--radius-xs);
  overflow: hidden;
  height: auto;
  aspect-ratio: 4 / 4.4;
  background: var(--surface-2);
  position: relative;
}
.hero__portrait::after {
  content: "";
  position: absolute; inset: 0;
  box-shadow: inset 0 -60px 60px -40px var(--surface);
  pointer-events: none;
}
.hero__portrait img { width: 100%; height: 100%; object-fit: cover; object-position: center 18%; filter: saturate(1.02) contrast(1.02); }
.hero__facts { margin-top: 1rem; display: grid; gap: 0.75rem; padding: 0.4rem 0.5rem 0.6rem; }
.hero__facts div { display: flex; flex-direction: column; gap: 0.1rem; border-left: 2px solid var(--accent-soft); padding-left: 0.7rem; }
.hero__facts dt { font-size: 0.7rem; text-transform: uppercase; letter-spacing: var(--ls-sm); color: var(--text-mute); }
.hero__facts dd { font-size: 0.9rem; color: var(--text); font-weight: 500; }

.hero__scroll {
  position: absolute;
  bottom: 1.8rem; left: 50%;
  transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 1.5px solid var(--border-strong);
  border-radius: 14px;
  z-index: 1;
  display: grid; place-items: start center;
  padding-top: 7px;
}
.hero__scroll span { width: 3px; height: 7px; border-radius: 3px; background: var(--accent); animation: scrolldot 1.8s var(--ease) infinite; }
@keyframes scrolldot { 0% { opacity: 0; transform: translateY(0); } 40% { opacity: 1; } 100% { opacity: 0; transform: translateY(12px); } }

/* ---------- About ---------- */
.about { display: grid; grid-template-columns: 1.3fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }
.about__lead p { color: var(--text-soft); font-size: 1.08rem; margin-bottom: 1.1rem; }
.about__lead strong { color: var(--text); font-weight: 600; }
.about__pillars { display: grid; gap: 1.3rem; }
.about__pillars li { display: flex; gap: 0.9rem; }
.about__num { color: var(--accent); font-size: 1.3rem; line-height: 1.4; font-weight: 700; }
.about__pillars strong { display: block; font-size: 1rem; margin-bottom: 0.2rem; }
.about__pillars p { color: var(--text-mute); font-size: 0.92rem; }

/* ---------- Expertise ---------- */
.expertise { display: grid; grid-template-columns: 1.55fr 1fr; gap: clamp(2rem, 5vw, 3.5rem); align-items: center; }
.expertise__cards { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.xcard {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.4rem;
  transition: transform 0.3s var(--ease), border-color 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}
.xcard::before {
  content: "";
  position: absolute; top: 0; left: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.xcard:hover { transform: translateY(-4px); border-color: var(--border-strong); box-shadow: var(--shadow-1); }
.xcard:hover::before { transform: scaleX(1); }
.xcard h3 { font-size: 1.05rem; margin-bottom: 0.5rem; font-weight: 600; }
.xcard p { color: var(--text-mute); font-size: 0.9rem; }
.expertise__chart {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.expertise__chart figcaption, .ai__chart figcaption { color: var(--text-mute); font-size: var(--fs-sm); text-align: center; margin-top: 0.8rem; }
#radarChart { max-width: 400px; margin-inline: auto; }

/* ---------- Timeline ---------- */
.timeline { display: grid; gap: 0; }
.tl { display: grid; grid-template-columns: 28px 1fr; gap: 1.4rem; }
.tl__rail { position: relative; display: flex; justify-content: center; }
.tl__rail::before {
  content: "";
  position: absolute; top: 6px; bottom: -2rem;
  width: 1.5px;
  background: var(--border-strong);
}
.tl:last-child .tl__rail::before { display: none; }
.tl__dot {
  width: 13px; height: 13px;
  border-radius: 50%;
  background: var(--bg);
  border: 2.5px solid var(--accent);
  margin-top: 5px;
  position: relative;
  z-index: 1;
  box-shadow: 0 0 0 5px var(--accent-soft);
}
.tl__body { padding-bottom: 2.6rem; }
.tl__top { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 0.5rem; }
.tl__role { font-family: var(--font-serif); font-size: 1.3rem; font-weight: 500; }
.tl__early { font-family: var(--font-sans); font-size: 0.85rem; color: var(--text-mute); font-weight: 400; }
.tl__period { font-size: var(--fs-sm); color: var(--accent); font-weight: 600; letter-spacing: 0.03em; white-space: nowrap; }
.tl__org { color: var(--text-soft); font-weight: 500; margin: 0.3rem 0 0.9rem; font-size: 0.95rem; }
.tl__org span { color: var(--text-mute); margin: 0 0.35rem; }
.tl__points { display: grid; gap: 0.5rem; margin-bottom: 1rem; }
.tl__points li { position: relative; padding-left: 1.1rem; color: var(--text-soft); font-size: 0.95rem; }
.tl__points li::before { content: "›"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
.tl__tags { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.tl__tags span {
  font-size: 0.74rem;
  padding: 0.28rem 0.65rem;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-mute);
  letter-spacing: 0.02em;
}

/* ---------- AI ---------- */
.ai { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(2rem, 5vw, 3.5rem); align-items: center; }
.ai__list { display: grid; gap: 0.9rem; }
.ai__item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 2px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 1.1rem 1.3rem;
  transition: transform 0.3s var(--ease), background 0.3s;
}
.ai__item:hover { transform: translateX(4px); background: var(--surface-2); }
.ai__item h3 { font-size: 0.98rem; margin-bottom: 0.3rem; font-weight: 600; }
.ai__item p { color: var(--text-mute); font-size: 0.9rem; }
.ai__chart {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
#aiSynapse { width: 100%; }

/* ---------- Tech stack ---------- */
.stack { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; }
.stackgroup {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.5rem 1.7rem;
  transition: border-color 0.3s, transform 0.3s var(--ease);
}
.stackgroup:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.stackgroup h3 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: var(--ls-sm);
  color: var(--accent);
  margin-bottom: 1rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
}
.stackgroup ul { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.stackgroup li {
  font-size: 0.85rem;
  padding: 0.34rem 0.7rem;
  border-radius: 7px;
  background: var(--surface-2);
  color: var(--text-soft);
  border: 1px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}
.stackgroup li:hover { border-color: var(--accent); color: var(--text); }

/* ---------- Work ---------- */
.work { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.work__card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.8rem 1.6rem;
  transition: transform 0.3s var(--ease), box-shadow 0.3s, border-color 0.3s;
}
.work__card:hover { transform: translateY(-4px); box-shadow: var(--shadow-1); border-color: var(--border-strong); }
.work__kind {
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--gold);
  font-weight: 600;
  margin-bottom: 0.8rem;
}
.work__card h3 { font-family: var(--font-serif); font-size: 1.3rem; font-weight: 500; margin-bottom: 0.7rem; }
.work__card p { color: var(--text-mute); font-size: 0.92rem; }
.work__refs { display: grid; gap: 0.6rem; margin-bottom: 0.9rem; }
.work__refs li { color: var(--text-soft); font-size: 0.92rem; padding-left: 1rem; position: relative; }
.work__refs li::before { content: "—"; position: absolute; left: 0; color: var(--accent); }
.work__refs strong { color: var(--text); }
.work__note { font-size: 0.86rem; color: var(--text-mute); font-style: italic; }

/* ---------- Reference clients ---------- */
/* Theme-adaptive normalization: logos render as a single restrained tone by
   default, then gain presence (full colour in light mode, crisp contrast in
   dark mode) on hover/focus. Keeps a mixed-tone logo set visually harmonious. */
[data-theme="dark"] {
  --logo-filter: grayscale(1) brightness(0) invert(1);
  --logo-filter-hover: grayscale(1) brightness(0) invert(1);
  --logo-op: 0.6;
}
[data-theme="light"] {
  --logo-filter: grayscale(1);
  --logo-filter-hover: grayscale(0);
  --logo-op: 0.55;
}

.clients {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.1rem;
}
.clienttile {
  display: grid;
  place-items: center;
  min-height: 124px;
  padding: 1.4rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease),
    box-shadow 0.35s var(--ease), background 0.35s var(--ease);
}
.clienttile:hover,
.clienttile:focus-visible {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-1);
  background: var(--surface);
  background: color-mix(in srgb, var(--accent) 5%, var(--surface));
}
.clienttile img {
  max-width: 150px;
  max-height: 52px;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: var(--logo-filter);
  opacity: var(--logo-op);
  transition: filter 0.4s var(--ease), opacity 0.4s var(--ease), transform 0.4s var(--ease);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}
.clienttile:hover img,
.clienttile:focus-visible img {
  filter: var(--logo-filter-hover);
  opacity: 1;
  transform: scale(1.06);
}

/* ---------- CV center ---------- */
.cv {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-1);
}
.cv__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1.1rem 1.4rem;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}
.seg {
  display: inline-flex;
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 4px;
  gap: 2px;
}
.seg__btn {
  padding: 0.5rem 1.2rem;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-mute);
  transition: color 0.25s, background 0.25s var(--ease);
}
.seg__btn:hover { color: var(--text); }
.seg__btn.is-active { background: var(--accent); color: #fff; }
.cv__actions { display: flex; align-items: center; gap: 0.7rem; flex-wrap: wrap; }
.cv__state { font-size: 0.8rem; color: var(--text-mute); }

.cv__layout { display: grid; grid-template-columns: 1.2fr 1fr; }
.cv__viewer {
  padding: clamp(1.6rem, 3vw, 2.6rem);
  max-height: 760px;
  overflow-y: auto;
  border-right: 1px solid var(--border);
  scrollbar-width: thin;
}
.cv__viewer::-webkit-scrollbar { width: 5px; }
.cv__viewer::-webkit-scrollbar-track { background: transparent; }
.cv__viewer::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }
.cv__viewer::-webkit-scrollbar-thumb:hover { background: var(--text-mute); }
.cv__aside { padding: 1.4rem; background: var(--bg-alt); }
.cv__pdfhead { font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: var(--ls-sm); color: var(--text-mute); margin-bottom: 0.8rem; }
.cv__embedwrap {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--surface);
  height: auto;
  aspect-ratio: 3 / 4;
  max-height: 560px;
}
.cv__embed { width: 100%; height: 100%; border: 0; display: block; }
.cv__fallback { margin-top: 0.9rem; font-size: 0.88rem; color: var(--text-soft); }
.cv__fallback a { color: var(--accent); font-weight: 600; }
.cv__open { display: inline-block; margin-top: 0.9rem; font-size: 0.84rem; color: var(--accent); font-weight: 600; }
.cv__open:hover { text-decoration: underline; }
.cv__hint { padding: 1rem 1.4rem; background: var(--accent-soft); color: var(--text); font-size: 0.88rem; border-top: 1px solid var(--border); }

/* CV rendered document */
.cvdoc__header { padding-bottom: 1.3rem; border-bottom: 2px solid var(--accent); margin-bottom: 1.6rem; }
.cvdoc__name { font-family: var(--font-serif); font-size: 1.7rem; font-weight: 600; line-height: 1.1; }
.cvdoc__role { color: var(--accent); font-weight: 600; margin-top: 0.2rem; font-size: 0.98rem; }
.cvdoc__contact { display: flex; flex-wrap: wrap; gap: 0.5rem 1.2rem; margin-top: 0.8rem; }
.cvdoc__contact span { font-size: var(--fs-sm); color: var(--text-mute); }
.cvdoc__section { margin-bottom: 1.7rem; }
.cvdoc__h {
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-mute);
  font-weight: 700;
  margin-bottom: 0.9rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}
.cvdoc__summary { color: var(--text-soft); font-size: 0.96rem; }
.cvexp { margin-bottom: 1.2rem; }
.cvexp__top { display: flex; justify-content: space-between; align-items: baseline; gap: 0.5rem; flex-wrap: wrap; }
.cvexp__role { font-weight: 600; font-size: 1rem; }
.cvexp__period { font-size: 0.78rem; color: var(--accent); font-weight: 600; white-space: nowrap; }
.cvexp__org { color: var(--text-soft); font-size: 0.88rem; margin: 0.15rem 0 0.5rem; font-weight: 500; }
.cvexp ul { display: grid; gap: 0.35rem; }
.cvexp li { position: relative; padding-left: 1rem; font-size: 0.9rem; color: var(--text-mute); }
.cvexp li::before { content: "·"; position: absolute; left: 0.2rem; color: var(--accent); font-weight: 700; }
.cvskills { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.cvskills span {
  font-size: var(--fs-sm);
  padding: 0.3rem 0.7rem;
  border-radius: 7px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-soft);
}
.cvskills span b { color: var(--accent); font-weight: 600; }
.cvgrid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.cvlist { display: grid; gap: 0.55rem; }
.cvlist li { font-size: 0.9rem; color: var(--text-soft); }
.cvlist li b { color: var(--text); font-weight: 600; display: block; }
.cvlist li small { color: var(--text-mute); font-size: var(--fs-sm); }
.cvlist--lang li { display: flex; justify-content: space-between; gap: 0.5rem; align-items: baseline; }
.cvlist--lang li span { color: var(--text-mute); font-size: 0.84rem; }

/* ---------- Lab tools ---------- */
.lab { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.1rem; }
.labcard {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: transform 0.3s var(--ease), border-color 0.3s;
}
.labcard:hover { transform: translateY(-3px); border-color: var(--border-strong); }
.labcard__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.4rem; }
.labcard__icon {
  display: grid; place-items: center;
  width: 36px; height: 36px;
  border-radius: 9px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-size: 1rem;
  color: var(--text-soft);
}
.labcard__status {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.labcard__status::before { content: ""; width: 7px; height: 7px; border-radius: 50%; }
.labcard[data-status="available"] .labcard__status { color: var(--accent); background: var(--accent-soft); }
.labcard[data-status="available"] .labcard__status::before { background: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.labcard[data-status="private"] .labcard__status { color: var(--gold); background: transparent; background: color-mix(in srgb, var(--gold) 14%, transparent); }
.labcard[data-status="private"] .labcard__status::before { background: var(--gold); }
.labcard[data-status="offline"] .labcard__status { color: var(--text-mute); background: var(--surface-2); }
.labcard[data-status="offline"] .labcard__status::before { background: var(--text-mute); }
.labcard[data-status="offline"] { opacity: 0.85; }
.labcard h3 { font-size: 1.1rem; font-weight: 600; }
.labcard p { color: var(--text-mute); font-size: 0.88rem; flex-grow: 1; }
.labcard__link {
  margin-top: 0.6rem;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  gap: 0.3rem;
  align-items: center;
  width: fit-content;
}
.labcard__link span { transition: transform 0.25s var(--ease); }
.labcard__link:hover span { transform: translate(2px, -2px); }

/* ---------- Contact ---------- */
.section--contact { text-align: center; }
.contact { max-width: 720px; margin-inline: auto; }
.section--contact .eyebrow { color: var(--accent); }
.contact__lead { margin: 1.2rem auto 0; color: var(--text-soft); font-size: 1.06rem; max-width: 560px; }
.contact__cta { display: flex; flex-wrap: wrap; gap: 0.8rem; justify-content: center; margin-top: 2.2rem; }

/* ---------- Footer ---------- */
.footer { background: var(--bg-alt); border-top: 1px solid var(--border); padding-top: 3.5rem; }
.footer__inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 2.5rem; padding-bottom: 2.5rem; }
.footer__brand { display: flex; align-items: center; gap: 0.9rem; max-width: 340px; }
.footer__mark {
  display: grid; place-items: center;
  width: 44px; height: 44px;
  border-radius: 11px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-serif);
  font-weight: 600;
  border: 1px solid var(--border-strong);
}
.footer__brand strong { font-size: 1rem; }
.footer__brand p { color: var(--text-mute); font-size: 0.85rem; margin-top: 0.2rem; }
.footer__links { display: flex; gap: 3rem; flex-wrap: wrap; }
.footer__cap { font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: var(--ls-sm); color: var(--text-mute); margin-bottom: 0.7rem; }
.footer__links a { display: block; color: var(--text-soft); font-size: 0.9rem; padding: 0.22rem 0; transition: color 0.2s; }
.footer__links a:hover { color: var(--accent); }
.footer__base {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 1.4rem 0;
  border-top: 1px solid var(--border);
}
.footer__base p { color: var(--text-mute); font-size: 0.8rem; }

/* ---------- To top ---------- */
.to-top {
  position: fixed;
  right: 1.4rem; bottom: 1.4rem;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 1.1rem;
  display: grid; place-items: center;
  box-shadow: var(--shadow-1);
  opacity: 0;
  transform: translateY(14px) scale(0.9);
  pointer-events: none;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), background 0.2s;
  z-index: 800;
}
.to-top.is-visible { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
.to-top:hover { background: var(--accent-strong); }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__card { max-width: 360px; }
  .about, .expertise, .ai { grid-template-columns: 1fr; }
  .expertise__chart, .ai__chart { max-width: 460px; }
  .stack, .work { grid-template-columns: 1fr 1fr; }
  .cv__layout { grid-template-columns: 1fr; }
  .cv__viewer { border-right: none; border-bottom: 1px solid var(--border); max-height: 620px; }
}
@media (max-width: 760px) {
  html { scroll-padding-top: 70px; }
  .nav__links {
    position: fixed;
    inset: 64px 0 auto 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 0.8rem var(--gutter) 1.4rem;
    transform: translateY(-120%);
    visibility: hidden;
    transition: transform 0.35s var(--ease), visibility 0.35s var(--ease);
    box-shadow: var(--shadow-2);
  }
  .nav__links.is-open { transform: translateY(0); visibility: visible; }
  .nav__links a { padding: 0.85rem 0.4rem; font-size: 1rem; border-bottom: 1px solid var(--border); }
  .nav__links a::after { display: none; }
  .nav__burger { display: flex; }
  .nav__cv { display: none; }
  .stack, .work, .expertise__cards { grid-template-columns: 1fr; }
  .clients { grid-template-columns: repeat(2, 1fr); gap: 0.8rem; }
  .clienttile { min-height: 104px; padding: 1rem; }
  .clienttile img { max-width: 120px; max-height: 44px; }
  .cvgrid2 { grid-template-columns: 1fr; }
  .cv__bar { justify-content: center; }
  .footer__base { flex-direction: column; }
  .tl { gap: 1rem; }
}
@media (max-width: 420px) {
  .hero__meta { gap: 1.4rem; }
  .btn { flex: 1 1 auto; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero__scroll span { animation: none; }
  /* keep the contrast/colour shift on logo hover, drop the motion */
  .clienttile:hover, .clienttile:focus-visible { transform: none; }
  .clienttile:hover img, .clienttile:focus-visible img { transform: none; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.01ms !important; }
}

/* ---------- Print (CV) ---------- */
@page { margin: 1.8cm 1.6cm; }
@media print {
  .nav, .hero, .section:not(#cv), .footer, .to-top, .scroll-progress, .skip-link,
  .cv__bar, .cv__aside, .cv__hint, .section__head { display: none !important; }
  body { background: #fff; color: #000; }
  #cv, .section { padding: 0; }
  .cv, .cv__layout, .cv__viewer { border: none; box-shadow: none; max-height: none; overflow: visible; display: block; padding: 0; }
  .tl { page-break-inside: avoid; }
  .cvdoc__h { color: #444; }
  .cvexp__period, .cvdoc__role { color: #14796a; }
  .cvskills span { border: 1px solid #ccc; }
}