/* ================================================================
   ÆLIS LAB — Engineering Aesthetics
   Light edition · white canvas · violet accent
   ================================================================ */

:root {
  --bg: #FCFCFA;
  --bg-soft: #F5F4F1;
  --ink: #131217;
  --ink-soft: #4A4752;
  --muted: #8B8794;
  --line: #E6E4DF;
  --accent: #6D28D9;
  --accent-deep: #4C1D95;
  --accent-soft: #F1EAFD;
  --accent-glow: rgba(109, 40, 217, 0.12);
  --serif: "Playfair Display", "Georgia", serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Menlo, monospace;
  --max: 1280px;
  --pad: clamp(20px, 4vw, 64px);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--accent); color: #fff; }

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--max); margin: 0 auto; padding-left: var(--pad); padding-right: var(--pad); }

/* ---------- typography helpers ---------- */
.serif { font-family: var(--serif); }

.label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: clamp(28px, 4vw, 48px);
}
.label::after { content: ""; height: 1px; flex: 0 0 64px; background: var(--accent); opacity: .5; }

.h-giant {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(38px, 7vw, 96px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  overflow-wrap: break-word;
}
.h-big {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(32px, 4.6vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.015em;
}
.h-card {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(24px, 2.4vw, 32px);
  line-height: 1.15;
}
.accent { color: var(--accent); }
.muted { color: var(--muted); }

.small {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

/* ---------- header ---------- */
header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(252, 252, 250, 0.82);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease;
}
header.scrolled { border-bottom-color: var(--line); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 24px;
  letter-spacing: 0.02em;
}
.logo .dot { color: var(--accent); }

.nav-links { display: flex; align-items: center; gap: clamp(16px, 2.6vw, 36px); }
.nav-links a {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  transition: color .2s;
}
.nav-links a:hover { color: var(--accent); }

.lang { display: flex; gap: 8px; font-size: 12px; letter-spacing: .12em; }
.lang a { color: var(--muted); }
.lang a.active { color: var(--accent); border-bottom: 1px solid var(--accent); }
.lang span { color: var(--line); }

.nav-cta {
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  padding: 10px 20px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  transition: all .25s;
}
.nav-cta:hover { background: var(--accent); border-color: var(--accent); color: #fff !important; }

.burger { display: none; background: none; border: none; cursor: pointer; font-family: var(--mono); font-size: 12px; letter-spacing: .18em; color: var(--ink); }

@media (max-width: 1100px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    position: fixed;
    top: 72px; left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 22px;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 32px var(--pad) 40px;
  }
  .burger { display: block; }
}

/* ---------- hero ---------- */
.hero {
  min-height: min(88vh, 960px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 130px;
  padding-bottom: 56px;
  position: relative;
}
.hero-status {
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--muted);
  margin-bottom: 28px;
}
.hero-status b { color: var(--accent); font-weight: 500; }

.hero-title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(72px, 15vw, 216px);
  line-height: .92;
  letter-spacing: -0.01em;
}
.hero-title .dot { color: var(--accent); }

.hero-sub {
  margin-top: clamp(28px, 4vw, 48px);
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  align-items: flex-end;
  justify-content: space-between;
}
.hero-sub p { max-width: 520px; color: var(--ink-soft); }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: 15px 30px;
  border-radius: 999px;
  border: 1px solid var(--ink);
  cursor: pointer;
  transition: all .25s;
}
.btn-solid { background: var(--ink); color: #fff; }
.btn-solid:hover { background: var(--accent); border-color: var(--accent); box-shadow: 0 12px 32px var(--accent-glow); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- marquee ---------- */
.marquee {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  padding: 18px 0;
  background: var(--bg-soft);
}
.marquee-track {
  display: flex;
  gap: 64px;
  width: max-content;
  animation: scroll 36s linear infinite;
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--ink-soft);
  white-space: nowrap;
}
.marquee-track .sep { color: var(--accent); }
@keyframes scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------- sections ---------- */
section { padding: clamp(80px, 11vw, 160px) 0; }
section + section { border-top: 1px solid var(--line); }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 6vw, 96px);
  align-items: start;
}
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }

/* ---------- why cards ---------- */
.why-points { display: grid; gap: 0; margin-top: 8px; }
.why-point {
  padding: 26px 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
}
.why-point:last-child { border-bottom: 1px solid var(--line); }
.why-num { font-size: 12px; color: var(--accent); letter-spacing: .1em; padding-top: 5px; }
.why-point h3 { font-family: var(--serif); font-size: 21px; margin-bottom: 6px; }
.why-point p { color: var(--ink-soft); font-size: 14px; }

/* ---------- services ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 12px;
}
@media (max-width: 900px) { .services-grid { grid-template-columns: 1fr; } }

.service-card {
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: clamp(28px, 3.4vw, 44px);
  background: #fff;
  position: relative;
  overflow: hidden;
  transition: border-color .3s, box-shadow .3s, transform .3s;
}
.service-card:hover {
  border-color: var(--accent);
  box-shadow: 0 24px 60px var(--accent-glow);
  transform: translateY(-4px);
}
.service-card .code {
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--muted);
  margin-bottom: 20px;
  display: flex;
  justify-content: space-between;
}
.service-card h3 { margin-bottom: 14px; }
.service-card > p { color: var(--ink-soft); font-size: 14px; margin-bottom: 22px; }
.service-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; }
.service-tags li {
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 12px;
  background: var(--bg-soft);
}
.service-price {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-top: 1px dashed var(--line);
  padding-top: 20px;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}
.service-price b {
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
  color: var(--accent);
}
.service-card.wide { grid-column: 1 / -1; }
@media (max-width: 900px) { .service-card.wide { grid-column: auto; } }

/* pricing detail table */
.price-table { margin-top: 56px; border: 1px solid var(--line); border-radius: 20px; overflow: hidden; background:#fff; }
.price-row {
  display: grid;
  grid-template-columns: 1.2fr 2fr 0.7fr;
  gap: 20px;
  padding: 20px clamp(20px, 3vw, 36px);
  border-top: 1px solid var(--line);
  align-items: center;
  font-size: 13.5px;
}
.price-row:first-child { border-top: none; background: var(--bg-soft); font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--muted); }
.price-row .p-name { font-family: var(--serif); font-size: 17px; }
.price-row .p-desc { color: var(--ink-soft); font-size: 13px; }
.price-row .p-val { text-align: right; color: var(--accent); font-weight: 500; white-space: nowrap; }
@media (max-width: 720px) {
  .price-row { grid-template-columns: 1fr auto; }
  .price-row .p-desc { display: none; }
  .price-row:first-child span:nth-child(2) { display: none; }
}
.price-note { margin-top: 18px; font-size: 12.5px; color: var(--muted); }

/* ---------- work / artifacts ---------- */
.work-list { border-top: 1px solid var(--line); }
.work-item {
  display: grid;
  grid-template-columns: 56px 1.3fr 1fr minmax(160px, 260px);
  gap: 24px;
  align-items: baseline;
  padding: clamp(24px, 3vw, 40px) 0;
  border-bottom: 1px solid var(--line);
  transition: background .25s, padding-left .25s;
}
.work-item:hover { background: var(--accent-soft); padding-left: 16px; }
.work-item .w-num { font-size: 13px; color: var(--muted); }
.work-item h3 { font-family: var(--serif); font-size: clamp(22px, 2.6vw, 32px); font-weight: 600; overflow-wrap: break-word; }
.work-item .w-meta { font-size: 11.5px; letter-spacing: .16em; text-transform: uppercase; color: var(--ink-soft); }
.work-item .w-result { font-size: 12px; color: var(--accent); text-align: right; }
@media (max-width: 820px) {
  .work-item { grid-template-columns: 48px 1fr; row-gap: 8px; }
  .work-item .w-meta { grid-column: 2; }
  .work-item .w-result { grid-column: 2; text-align: left; }
}

/* ---------- core principles ---------- */
.core-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 12px; }
@media (max-width: 900px) { .core-grid { grid-template-columns: 1fr; } }
.core-card { border-top: 2px solid var(--accent); padding-top: 24px; }
.core-card .code { font-size: 11px; letter-spacing: .2em; color: var(--muted); margin-bottom: 14px; }
.core-card h3 { font-family: var(--serif); font-size: 22px; margin-bottom: 10px; }
.core-card p { color: var(--ink-soft); font-size: 14px; }

/* ---------- process ---------- */
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 12px; }
@media (max-width: 1000px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }
.step {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  padding: 28px 26px;
  position: relative;
}
.step .s-num {
  font-family: var(--serif);
  font-size: 44px;
  color: var(--accent-soft);
  -webkit-text-stroke: 1px var(--accent);
  line-height: 1;
  margin-bottom: 18px;
}
.step h3 { font-family: var(--serif); font-size: 19px; margin-bottom: 8px; }
.step p { font-size: 13px; color: var(--ink-soft); }

/* ---------- founder ---------- */
.founder-card {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(160deg, #fff 0%, var(--accent-soft) 130%);
  padding: clamp(28px, 3.4vw, 44px);
  position: relative;
}
.founder-monogram {
  font-family: var(--serif);
  font-size: clamp(90px, 10vw, 150px);
  line-height: 1;
  color: var(--accent);
  margin-bottom: 24px;
}
.founder-role { font-size: 11px; letter-spacing: .22em; text-transform: uppercase; color: var(--accent); margin-bottom: 6px; }
.founder-name { font-family: var(--serif); font-size: 30px; font-weight: 600; margin-bottom: 18px; }
.founder-facts { display: grid; gap: 10px; font-size: 13px; color: var(--ink-soft); }
.founder-facts li { display: flex; gap: 10px; }
.founder-facts li::before { content: "→"; color: var(--accent); }

.quote {
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
  font-family: var(--serif);
  font-size: clamp(19px, 2vw, 24px);
  font-style: italic;
  line-height: 1.5;
}
.quote .q-mark { color: var(--accent); font-size: 34px; }

/* ---------- faq ---------- */
.faq { max-width: 820px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq details:first-of-type { border-top: 1px solid var(--line); }
.faq summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 24px 0;
  font-family: var(--serif);
  font-size: 19px;
  transition: color .2s;
}
.faq summary:hover { color: var(--accent); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--mono); color: var(--accent); font-size: 22px; transition: transform .25s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 0 26px; color: var(--ink-soft); font-size: 14px; max-width: 680px; }

/* ---------- contact ---------- */
.contact { text-align: left; }
.contact .h-giant { margin-bottom: 32px; }
.contact-channels { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 40px; }
.channel {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 16px 28px;
  font-size: 13px;
  letter-spacing: .1em;
  text-transform: uppercase;
  background: #fff;
  transition: all .25s;
}
.channel b { color: var(--accent); font-weight: 500; }
.channel:hover { border-color: var(--accent); box-shadow: 0 12px 32px var(--accent-glow); transform: translateY(-2px); }
.contact-note { margin-top: 26px; font-size: 13px; color: var(--muted); }

/* ---------- footer ---------- */
footer {
  border-top: 1px solid var(--line);
  padding: 56px 0;
  background: var(--bg-soft);
}
.foot {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  justify-content: space-between;
  align-items: flex-end;
}
.foot .logo { font-size: 34px; }
.foot-links { display: flex; gap: 22px; font-size: 12px; letter-spacing: .14em; text-transform: uppercase; }
.foot-links a { color: var(--ink-soft); }
.foot-links a:hover { color: var(--accent); }
.foot-meta { font-size: 11.5px; letter-spacing: .12em; color: var(--muted); text-align: right; line-height: 2; }
.foot-meta .ok { color: var(--accent); }

/* ---------- reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .marquee-track { animation: none; }
}