/* ==================================================
   VICTOR UKACHUKWU — Personal site
   Carson-template layout · editorial / swiss / terminal
   ================================================== */

:root {
  --paper: #efece5;
  --paper-2: #e7e3d9;
  --ink: #141210;
  --ink-soft: #3a3632;
  --muted: #8a8477;
  --rule: rgba(20,18,16,0.14);
  --accent: #141210;
  --card: #e2ddd1;

  --f-display: 'Instrument Serif', 'Fraunces', Georgia, serif;
  --f-body: 'Inter', -apple-system, system-ui, sans-serif;
  --f-mono: 'JetBrains Mono', ui-monospace, monospace;

  --wrap: 1280px;
  --gutter: 40px;
}

[data-theme="dark"] {
  --paper: #0f0e0c;
  --paper-2: #171613;
  --ink: #f2ede2;
  --ink-soft: #c9c3b5;
  --muted: #8e887b;
  --rule: rgba(242,237,226,0.14);
  --card: #1a1815;
}

[data-accent="ink"]        { --accent: var(--ink); }
[data-accent="terracotta"] { --accent: #c8553d; }
[data-accent="forest"]     { --accent: #3a5a40; }
[data-accent="cobalt"]     { --accent: #2f4b7c; }

[data-direction="swiss"]    { --f-display: 'Inter', sans-serif; }
[data-direction="terminal"] { --f-display: 'JetBrains Mono', monospace; --f-body: 'JetBrains Mono', monospace; }

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { background: var(--paper); color: var(--ink); }
body {
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  transition: background 0.2s, color 0.2s;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }

/* ============ MOBILE NAV OVERLAY ============ */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--paper);
  z-index: 200;
  flex-direction: column;
  justify-content: center;
  padding: 0 32px;
  gap: 0;
}
.mobile-nav.open { display: flex; }
.mobile-nav-close {
  position: absolute;
  top: 20px; right: 24px;
  background: none;
  border: none;
  font-size: 32px;
  cursor: pointer;
  color: var(--ink);
  line-height: 1;
  padding: 8px;
}
.mob-link {
  font-family: var(--f-display);
  font-size: clamp(36px, 10vw, 56px);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--ink);
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
  display: block;
  transition: color 0.15s;
}
.mob-link:last-child { border-bottom: none; }
.mob-link:active { color: var(--muted); }

/* ============ NAV ============ */
.top {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in oklab, var(--paper) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
}
.top .row {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 16px var(--gutter);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
}
.brand {
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
}
.brand b { font-weight: 500; }
.links {
  display: flex;
  gap: 28px;
  font-size: 13px;
  letter-spacing: 0.04em;
}
.links a { color: var(--ink-soft); transition: color 0.15s; }
.links a:hover { color: var(--ink); }
.right {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 10px;
}
.theme-btn {
  font: inherit;
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 12px;
  letter-spacing: 0.06em;
  cursor: pointer;
}
.theme-btn:hover { border-color: var(--ink); color: var(--ink); }

.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  flex-direction: column;
  gap: 5px;
  width: 36px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.2s;
}

/* ============ HERO ============ */
.hero {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 60px var(--gutter) 40px;
}
.hero-top {
  display: grid;
  grid-template-columns: 1fr 460px;
  gap: 56px;
  align-items: flex-end;
  padding-bottom: 56px;
}
.hero-left { padding-bottom: 24px; max-width: 440px; }
.hero-left .intro {
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink-soft);
  margin-bottom: 28px;
}
.cta {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 26px;
  background: var(--ink);
  color: var(--paper);
  font-size: 13px;
  letter-spacing: 0.08em;
  border-radius: 100px;
  transition: transform 0.2s, background 0.2s;
}
.cta::after { content: '→'; font-size: 14px; }
.cta:hover { transform: translateX(3px); }
.rating {
  margin-top: 36px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.rating .stars { color: var(--accent); font-size: 15px; letter-spacing: 2px; }
.rating-meta {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
}

.hero-photo {
  aspect-ratio: 4/5;
  background: var(--card);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}
.hero-photo img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
  filter: saturate(0.95) contrast(1.02);
}
.hero-photo::after {
  content: 'V.U.';
  position: absolute;
  bottom: 14px; right: 16px;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--paper);
  mix-blend-mode: difference;
  opacity: 0.85;
}

.hero-name {
  text-align: center;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 40px 0 32px;
}
.hero-name h1 {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(44px, 9vw, 140px);
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--ink);
  white-space: nowrap;
}
[data-direction="swiss"] .hero-name h1 { font-weight: 600; letter-spacing: -0.06em; }
[data-direction="terminal"] .hero-name h1 { font-weight: 500; letter-spacing: 0; font-size: clamp(30px, 6.5vw, 100px); }

.hero-foot {
  margin-top: 20px;
  display: flex;
  justify-content: space-between;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
}

/* ============ ABOUT ============ */
.about {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 80px var(--gutter) 40px;
}
.about-intro {
  max-width: 860px;
  margin: 0 auto 80px;
  text-align: center;
}
.section-label {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 24px;
}
.lede {
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink-soft);
  text-wrap: pretty;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.stat {
  padding: 44px 28px;
  text-align: center;
  border-right: 1px solid var(--rule);
}
.stat:last-child { border-right: none; }
.num {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(48px, 6.5vw, 96px);
  line-height: 1;
  letter-spacing: -0.035em;
  color: var(--ink);
  margin-bottom: 10px;
}
.num sup {
  font-size: 0.38em;
  vertical-align: super;
  font-family: var(--f-body);
  font-weight: 500;
  letter-spacing: 0.06em;
  margin-left: -2px;
}
.num span { font-family: var(--f-body); font-weight: 300; font-size: 0.55em; }
.label {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
}

/* ============ SECTION HEAD ============ */
.sec-head {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: end;
  margin-bottom: 56px;
}
.sec-title {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(40px, 6vw, 88px);
  line-height: 0.98;
  letter-spacing: -0.035em;
  color: var(--ink);
}
[data-direction="swiss"] .sec-title { font-weight: 600; letter-spacing: -0.04em; }
[data-direction="terminal"] .sec-title { font-size: clamp(28px, 4.5vw, 62px); font-weight: 500; letter-spacing: -0.01em; }
.sec-note {
  max-width: 360px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-soft);
  justify-self: end;
}
.services-tag {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 14px;
}

/* ============ WORK ============ */
.work { padding: 100px 0 60px; }
.work-grid {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.work-card { display: block; transition: transform 0.3s; }
.work-card:hover { transform: translateY(-4px); }
.card-thumb {
  aspect-ratio: 4/3;
  background: var(--card);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 18px;
}
.card-thumb svg { width: 100%; height: 100%; display: block; }
.thumb-laptop { background: color-mix(in oklab, var(--card) 80%, var(--ink)); }
.thumb-phone  { background: color-mix(in oklab, var(--card) 85%, var(--accent)); }
.thumb-tablet { background: var(--card); }
.thumb-phone2 { background: color-mix(in oklab, var(--card) 70%, var(--paper-2)); }
.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 0 4px;
  flex-wrap: wrap;
}
.card-meta h3 {
  font-family: var(--f-body);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.card-sub {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
  white-space: nowrap;
}

/* ============ SERVICES ============ */
.services { padding: 100px 0 60px; }
.services .sec-head { margin-bottom: 48px; }
.services-layout {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.service-list { border-top: 1px solid var(--rule); }
.service-item {
  display: grid;
  grid-template-columns: 1fr 1.2fr 40px;
  gap: 40px;
  align-items: center;
  padding: 32px 8px;
  border-bottom: 1px solid var(--rule);
  cursor: pointer;
  transition: padding-left 0.3s ease;
}
.service-item:hover { padding-left: 24px; }
.service-left { display: flex; align-items: baseline; gap: 24px; }
.service-idx {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
  flex-shrink: 0;
}
.service-item h3 {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(22px, 2.6vw, 36px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
}
[data-direction="swiss"] .service-item h3 { font-weight: 500; }
[data-direction="terminal"] .service-item h3 { font-size: clamp(16px, 2vw, 26px); }
.service-desc { font-size: 14px; line-height: 1.55; color: var(--ink-soft); }
.service-plus {
  font-family: var(--f-display);
  font-size: 32px;
  color: var(--muted);
  text-align: right;
  transition: transform 0.3s, color 0.2s;
}
.service-item:hover .service-plus { color: var(--accent); transform: rotate(90deg); }

/* ============ TESTIMONIALS ============ */
.testimonials { padding: 100px 0 60px; background: var(--paper-2); }
.testimonials .sec-head { margin-bottom: 64px; }
.testimonial-grid {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.tcard {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 32px 28px 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.tcard .stars { color: var(--accent); font-size: 15px; letter-spacing: 2px; }
.tcard p {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: 18px;
  line-height: 1.45;
  letter-spacing: -0.005em;
  color: var(--ink);
  text-wrap: pretty;
  flex: 1;
}
[data-direction="swiss"] .tcard p { font-family: var(--f-body); font-size: 15px; line-height: 1.55; }
[data-direction="terminal"] .tcard p { font-size: 14px; line-height: 1.6; }
.tperson {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 18px;
  border-top: 1px solid var(--rule);
}
.tavatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--f-body);
  font-size: 13px; font-weight: 500;
  color: white;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}
.tname { font-size: 14px; font-weight: 500; color: var(--ink); }
.trole {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
  margin-top: 2px;
}

/* ============ CONTACT ============ */
.contact {
  padding: 120px var(--gutter) 40px;
  max-width: var(--wrap);
  margin: 0 auto;
  text-align: center;
}
.contact-top { margin-bottom: 40px; }
.contact-sub {
  max-width: 500px;
  margin: 0 auto;
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-soft);
}
.bigcta {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(72px, 14vw, 210px);
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--ink);
  margin: 48px 0;
  display: inline-block;
}
.bigcta em { font-style: italic; font-family: var(--f-display); }
[data-direction="swiss"] .bigcta { font-weight: 600; letter-spacing: -0.06em; }
[data-direction="swiss"] .bigcta em { font-style: normal; font-weight: 300; }
[data-direction="terminal"] .bigcta { font-size: clamp(48px, 10vw, 150px); font-weight: 500; letter-spacing: 0; }
[data-direction="terminal"] .bigcta em { font-style: normal; }
.cta-arrow {
  font-size: 0.45em;
  vertical-align: top;
  margin-left: 0.15em;
  position: relative;
  top: 0.25em;
  font-family: var(--f-body);
  font-weight: 300;
}
.contact-links {
  display: flex;
  justify-content: center;
  gap: 40px;
  padding: 24px 0 40px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  font-size: 15px;
  flex-wrap: wrap;
}
.contact-links a {
  color: var(--ink);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color 0.2s;
}
.contact-links a:hover { border-color: var(--accent); }
.foot-row {
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
  flex-wrap: wrap;
  gap: 16px;
}

/* ============ TWEAKS ============ */
.tweaks {
  position: fixed;
  bottom: 24px; right: 24px;
  width: 280px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 18px 18px 16px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.12);
  z-index: 50;
  display: none;
}
.tweaks.open { display: block; }
.tweaks h5 {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.tweaks h5 button { background: none; border: none; color: var(--muted); font-size: 18px; cursor: pointer; }
.tweak-row { margin-bottom: 14px; }
.tweak-row label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 8px;
  font-family: var(--f-mono);
}
.opts { display: flex; gap: 6px; flex-wrap: wrap; }
.opt {
  font: inherit;
  font-size: 12px;
  padding: 6px 10px;
  border: 1px solid var(--rule);
  background: transparent;
  color: var(--ink-soft);
  border-radius: 100px;
  cursor: pointer;
}
.opt.active { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.swatches { display: flex; gap: 8px; }
.sw {
  width: 28px; height: 28px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  outline: 1px solid var(--rule);
  outline-offset: 1px;
}
.sw.active { outline-color: var(--ink); outline-width: 2px; }

/* ============================================================
   RESPONSIVE — Tablet  ≤ 1024px
   ============================================================ */
@media (max-width: 1024px) {
  :root { --gutter: 32px; }

  .hero-top { grid-template-columns: 1fr 380px; gap: 40px; }

  .stats { grid-template-columns: repeat(4, 1fr); }
  .stat { padding: 36px 16px; }

  .service-item { gap: 24px; }
}

/* ============================================================
   RESPONSIVE — Phablet  ≤ 860px
   ============================================================ */
@media (max-width: 860px) {
  :root { --gutter: 24px; }

  /* Nav */
  .top .row { grid-template-columns: 1fr auto; }
  .top .links { display: none; }
  .hamburger { display: flex; }
  .theme-btn { display: none; }

  /* Hero */
  .hero { padding: 40px var(--gutter) 32px; }
  .hero-top {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    gap: 32px;
    padding-bottom: 40px;
  }
  .hero-photo {
    order: -1;
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    aspect-ratio: 3/2;
  }
  .hero-left { max-width: 100%; padding-bottom: 0; }
  .hero-left .intro { font-size: 16px; }

  .hero-name h1 {
    white-space: normal;
    font-size: clamp(40px, 11vw, 88px);
    letter-spacing: -0.03em;
    line-height: 0.92;
  }

  /* Section heads */
  .sec-head { grid-template-columns: 1fr; gap: 16px; }
  .sec-note { justify-self: start; max-width: 100%; }

  /* Stats */
  .stats { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(2) { border-right: none; }
  .stat:nth-child(3) { border-bottom: none; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--rule); }

  /* Work */
  .work { padding: 72px 0 48px; }
  .work-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .card-meta { flex-direction: column; gap: 4px; }
  .card-sub { white-space: normal; }

  /* Services */
  .services { padding: 72px 0 48px; }
  .service-item { grid-template-columns: 1fr auto; gap: 16px; padding: 24px 4px; }
  .service-desc { display: none; }

  /* Testimonials */
  .testimonials { padding: 72px 0 48px; }
  .testimonial-grid { grid-template-columns: 1fr 1fr; }

  /* Contact */
  .contact { padding: 80px var(--gutter) 32px; }
  .bigcta { margin: 32px 0; }

  /* Footer */
  .foot-row { flex-direction: column; gap: 8px; text-align: center; }
}

/* ============================================================
   RESPONSIVE — Phone  ≤ 640px
   ============================================================ */
@media (max-width: 640px) {
  :root { --gutter: 20px; }

  /* Brand truncate */
  .brand { font-size: 11px; letter-spacing: 0.08em; }

  /* Hero */
  .hero { padding: 28px var(--gutter) 24px; }
  .hero-photo { aspect-ratio: 1/1; max-width: 100%; }
  .hero-left .intro { font-size: 15px; margin-bottom: 20px; }
  .cta { padding: 12px 22px; font-size: 13px; }
  .rating { margin-top: 24px; }

  .hero-name { padding: 28px 0 22px; }
  .hero-name h1 {
    font-size: clamp(36px, 12vw, 60px);
    line-height: 0.9;
  }
  .hero-foot { flex-direction: column; align-items: center; gap: 4px; }

  /* About */
  .about { padding: 56px var(--gutter) 32px; }
  .about-intro { margin-bottom: 48px; }
  .lede { font-size: 15px; }

  /* Stats — stack 2×2 */
  .stats { grid-template-columns: 1fr 1fr; }
  .stat { padding: 28px 16px; }
  .num { font-size: clamp(40px, 12vw, 64px); }

  /* Work — single column */
  .work { padding: 56px 0 40px; }
  .work-grid { grid-template-columns: 1fr; gap: 28px; }

  /* Section head */
  .sec-head { margin-bottom: 36px; }
  .sec-title { font-size: clamp(36px, 10vw, 56px); }

  /* Services */
  .services { padding: 56px 0 40px; }
  .service-item { grid-template-columns: 1fr auto; gap: 12px; padding: 20px 4px; }
  .service-item h3 { font-size: clamp(18px, 5vw, 26px); }
  .service-left { gap: 14px; }

  /* Testimonials — single column */
  .testimonials { padding: 56px 0 40px; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .tcard { padding: 24px 20px 20px; }
  .tcard p { font-size: 16px; }

  /* Contact */
  .contact { padding: 64px var(--gutter) 28px; text-align: center; }
  .bigcta { font-size: clamp(52px, 16vw, 96px); margin: 24px 0; }
  .contact-links { flex-direction: column; align-items: center; gap: 16px; }
  .foot-row { text-align: center; }
}

/* ============================================================
   RESPONSIVE — Small phone  ≤ 390px
   ============================================================ */
@media (max-width: 390px) {
  :root { --gutter: 16px; }

  .brand b { display: none; }
  .brand::before { content: 'V.U.'; font-weight: 500; }

  .hero-name h1 { font-size: clamp(32px, 13vw, 52px); }

  .num { font-size: clamp(36px, 13vw, 56px); }

  .bigcta { font-size: clamp(44px, 17vw, 72px); }

  .stat { padding: 22px 10px; }
}