/* ============================================================
 * Zenkodu — Kreativa-style editorial minimalism (light palette)
 * ============================================================ */

:root {
  --bg:        #e1eeec;   /* light mint canvas */
  --bg-deep:   #1f1c24;   /* deep contrast */
  --bg-alt:    #e1eeec;   /* same mint, used by header/sections */
  --fg:        #363434;   /* dark text on light bg */
  --fg-mute:   #6b6770;   /* muted text */
  --accent:    #62929A;   /* deep mint/teal accent (readable on light) */
  --accent-bright: #71eac6;
  --border:    rgba(31, 28, 36, 0.14);

  --font:      'Space Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --fs-base:   18px;
  --max:       1280px;
  --ease:      cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul { margin: 0; padding: 0; list-style: none; }

/* ---------- Base ---------- */
body {
  font-family: var(--font);
  font-size: var(--fs-base);
  line-height: 1.5;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  opacity: 0;
  transition: opacity 0.9s var(--ease);
  cursor: none;
  overflow-x: hidden;
}
body.is-ready { opacity: 1; }

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(31, 28, 36, 0.18); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(31, 28, 36, 0.32); }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 2rem;
}
#page-wrapper {
  background-color: var(--bg);
}

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  background: var(--bg);
  backdrop-filter: blur(8px);
  transform: translateY(0);
  /* Reveal: smooth ease-out with a touch of overshoot.
     Hide: short, quick exit. */
  transition:
    background-color 0.5s var(--ease),
    color 0.5s var(--ease),
    transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.site-header.is-hidden {
  transform: translateY(-100%);
  transition:
    background-color 0.5s var(--ease),
    color 0.5s var(--ease),
    transform 0.35s cubic-bezier(0.55, 0, 0.45, 1);
}

/* When the header is hidden, also collapse its inner children
   so they animate back in with a stagger on reveal. */
.site-header .logo,
.site-header .nav a,
.site-header > .site-header__inner > .btn {
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity 0.5s var(--ease-out),
    transform 0.6s var(--ease-out);
}
.site-header.is-hidden .logo,
.site-header.is-hidden .nav a,
.site-header.is-hidden > .site-header__inner > .btn {
  opacity: 0;
  transform: translateY(-12px);
  transition-duration: 0.1s; /* fast on the way out */
}

/* Staggered reveal: each child re-enters slightly after the
   header itself begins sliding down. */
.site-header:not(.is-hidden) .logo                       { transition-delay: 0.20s; }
.site-header:not(.is-hidden) .nav a:nth-child(1)         { transition-delay: 0.28s; }
.site-header:not(.is-hidden) .nav a:nth-child(2)         { transition-delay: 0.34s; }
.site-header:not(.is-hidden) .nav a:nth-child(3)         { transition-delay: 0.40s; }
.site-header:not(.is-hidden) .nav a:nth-child(4)         { transition-delay: 0.46s; }
.site-header:not(.is-hidden) > .site-header__inner > .btn { transition-delay: 0.52s; }
.site-header__inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  font-size: 0.95rem;
}
.logo__mark { color: var(--accent); font-size: 1.2em; }
.nav {
  display: flex;
  gap: 2rem;
  font-size: 0.78rem;
}

/* ---------- Vertical text swap (Kreativa-style) ---------- */
[data-swap] {
  position: relative;
  display: inline-block;
  overflow: hidden;
  line-height: 1.2;
  vertical-align: bottom;
  transition: transform 0.55s var(--ease-out);
}
[data-swap]::after {
  content: attr(data-swap);
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translateY(110%);
  transition: transform 0.55s var(--ease-out);
  color: var(--accent);
}
a:hover [data-swap],
button:hover [data-swap] { transform: translateY(-110%); }
a:hover [data-swap]::after,
button:hover [data-swap]::after { transform: translateY(0); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1.6rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--accent);
  border-radius: 999px;
  transition: background 0.4s var(--ease), color 0.4s var(--ease), border-color 0.4s var(--ease);
}
.btn--solid {
  background: var(--accent);
  color: #fff;
}
.btn--solid [data-swap]::after { color: #fff; }
.btn--solid:hover { background: transparent; color: var(--accent); }
.btn--solid:hover [data-swap]::after { color: var(--accent); }

.btn--ghost { background: transparent; color: var(--accent); }
.btn--ghost:hover { background: var(--accent); color: #fff; }
.btn--ghost:hover [data-swap]::after { color: #fff; }

.btn--text {
  border: 0;
  padding: 0.9rem 0;
  color: var(--fg-mute);
  border-radius: 0;
}
.btn--text:hover { color: var(--accent); }
.btn--lg { font-size: 0.95rem; padding: 1rem 0; }
.btn--sm { padding: 0.55rem 1rem; font-size: 0.7rem; }

/* ---------- Typography ---------- */
h1, h2, h3 {
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.0;
  margin: 0;
  color: var(--fg);
}
h1 { font-size: clamp(2.8rem, 8.2vw, 8rem); }
h2 { font-size: clamp(2.4rem, 6vw, 5.4rem); }
h3 { font-size: 1.15rem; letter-spacing: -0.01em; }
p  { color: var(--fg-mute); }

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

.eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.8rem;
}
.tag {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 2rem;
}

/* ---------- Line-mask reveal primitives ---------- */
.reveal-mask {
  display: block;
  overflow: hidden;
  padding-bottom: 0.06em;
}
.reveal-mask__inner {
  display: inline-block;
  transform: translateY(110%);
  transition: transform 1s var(--ease-out);
}
.is-inview .reveal-mask__inner,
.reveal-mask.is-inview .reveal-mask__inner {
  transform: translateY(0);
}
.reveal-mask:nth-of-type(1) .reveal-mask__inner { transition-delay: 0.05s; }
.reveal-mask:nth-of-type(2) .reveal-mask__inner { transition-delay: 0.15s; }
.reveal-mask:nth-of-type(3) .reveal-mask__inner { transition-delay: 0.25s; }
.reveal-mask:nth-of-type(4) .reveal-mask__inner { transition-delay: 0.35s; }

.reveal-line {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.is-inview .reveal-line,
.reveal-line.is-inview { opacity: 1; transform: translateY(0); }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 10rem 0 5rem;
  position: relative;
}
.hero__title {
  max-width: 14ch;
  margin: 0 0 3rem;
}
.hero__title .reveal-mask { line-height: 1.0; }
.hero__cta { display: flex; gap: 1.5rem; align-items: center; flex-wrap: wrap; }
.hero__meta {
  position: absolute;
  bottom: 2rem; left: 0; right: 0;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--fg-mute);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* ---------- Manifesto ---------- */
.manifesto { padding: 8rem 0; }
.manifesto__inner { display: block; }
.manifesto__line { max-width: 14ch; }
.manifesto__line .reveal-mask { line-height: 1.0; }

/* ---------- Marquee ---------- */
.marquee {
  overflow: hidden;
  padding: 1.6rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.marquee__track {
  display: flex;
  gap: 2.5rem;
  white-space: nowrap;
  animation: scroll 36s linear infinite;
  font-size: 1.4rem;
  color: var(--fg);
}
.marquee__track span:nth-child(even) { color: var(--accent); }
@keyframes scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ---------- Sections ---------- */
.section { padding: 9rem 0; }
.section__head { margin-bottom: 5rem; }
.section__head h2 { max-width: 16ch; }
.reveal-mask-block { display: block; }
.section__tail { margin-top: 4rem; }

/* ---------- Work ---------- */
.work {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--border);
}
.work__item {
  padding: 2.5rem 2rem;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  display: block;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out),
              background 0.4s var(--ease);
}
.is-inview .work__item               { opacity: 1; transform: translateY(0); }
.is-inview .work__item:nth-child(1)  { transition-delay: 0.10s; }
.is-inview .work__item:nth-child(2)  { transition-delay: 0.20s; }
.is-inview .work__item:nth-child(3)  { transition-delay: 0.30s; }
.is-inview .work__item:nth-child(4)  { transition-delay: 0.40s; }
.work__item:nth-child(2n) { border-right: 0; }
.work__item:hover { background: rgba(39, 120, 106, 0.06); }
.work__item:hover h3 { color: var(--accent); }
.work__year {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--accent);
  text-transform: uppercase;
}
.work__item h3 {
  margin: 0.8rem 0 0.4rem;
  font-size: 1.8rem;
  letter-spacing: -0.02em;
  transition: color 0.3s var(--ease);
}
.work__item p { font-size: 0.9rem; }

/* ---------- Services ---------- */
.services {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid var(--border);
}
.service {
  padding: 2.5rem 1.5rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out),
              background 0.4s var(--ease);
}
.service:last-child { border-right: 0; }
.is-inview .service              { opacity: 1; transform: translateY(0); }
.is-inview .service:nth-child(1) { transition-delay: 0.10s; }
.is-inview .service:nth-child(2) { transition-delay: 0.20s; }
.is-inview .service:nth-child(3) { transition-delay: 0.30s; }
.is-inview .service:nth-child(4) { transition-delay: 0.40s; }
.is-inview .service:nth-child(5) { transition-delay: 0.50s; }
.service:hover { background: rgba(39, 120, 106, 0.06); }
.service:hover h3 { color: var(--accent); }
.service__num {
  display: inline-block;
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.14em;
  margin-bottom: 3rem;
}
.service h3 { margin: 0 0 0.5rem; transition: color 0.3s var(--ease); }
.service p { font-size: 0.85rem; }

/* ---------- Engagement models ---------- */
.models {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.model {
  padding: 2.5rem 2rem;
  background: rgba(31, 28, 36, 0.03);
  border: 1px solid var(--border);
  border-radius: 6px;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out),
              background 0.5s var(--ease), border-color 0.5s var(--ease);
}
.is-inview .model              { opacity: 1; transform: translateY(0); }
.is-inview .model:nth-child(1) { transition-delay: 0.10s; }
.is-inview .model:nth-child(2) { transition-delay: 0.25s; }
.is-inview .model:nth-child(3) { transition-delay: 0.40s; }
.model:hover {
  border-color: var(--accent);
  background: rgba(39, 120, 106, 0.06);
}
.model__tag {
  display: inline-flex;
  align-items: center; justify-content: center;
  width: 2rem; height: 2rem;
  border-radius: 999px;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-size: 0.78rem;
  margin-bottom: 1.5rem;
}
.model h3 { margin: 0 0 0.8rem; font-size: 1.6rem; }
.model p { font-size: 0.95rem; margin: 0 0 1.5rem; }
.model ul li {
  padding: 0.6rem 0;
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
  color: var(--fg);
  opacity: 0.8;
}
.models__note {
  margin-top: 4rem;
  text-align: center;
  font-size: 0.9rem;
  color: var(--fg-mute);
}

/* ---------- CTA + footer ---------- */
.cta { padding: 10rem 0 0; }
.cta__inner { text-align: center; }
.cta__title { max-width: 100%; margin: 1.5rem auto 3rem; }
.cta__title .reveal-mask { line-height: 1.0; }
.cta__actions {
  display: inline-flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}
.footer {
  margin-top: 8rem;
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-mute);
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ---------- Cookie ---------- */
.cookie {
  position: fixed;
  left: 1.5rem; right: 1.5rem; bottom: 1.5rem;
  margin: 0 auto;
  max-width: 560px;
  background: var(--fg);
  color: var(--bg);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  z-index: 60;
  font-size: 0.78rem;
  transform: translateY(140%);
  opacity: 0;
  transition: transform 0.7s var(--ease), opacity 0.7s var(--ease);
}
.cookie.is-visible { transform: translateY(0); opacity: 1; }
.cookie p { color: var(--bg); margin: 0; flex: 1; }

/* ---------- Custom cursor ---------- */
.cursor {
  position: fixed;
  top: 0; left: 0;
  width: 28px; height: 28px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: rgba(39, 120, 106, 0.08);
  pointer-events: none;
  transform: translate(-50%, -50%);
  transition: width 0.3s var(--ease), height 0.3s var(--ease),
              background 0.3s var(--ease), opacity 0.3s var(--ease);
  z-index: 9999;
  display: grid;
  place-items: center;
}
.cursor.is-hover {
  width: 96px; height: 96px;
  background: rgba(39, 120, 106, 0.18);
  border-color: var(--accent);
}
.cursor__label {
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0;
  transition: opacity 0.25s var(--ease);
}
.cursor.is-hover .cursor__label { opacity: 1; }

/* ---------- Section divider ---------- */
section[data-scroll-section] {
  position: relative;
  transition: background-color 0.9s var(--ease);
}
section[data-scroll-section]::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  height: 1px;
  width: 0;
  background: var(--accent);
  opacity: 0;
  transition: width 1.1s var(--ease), opacity 0.4s var(--ease);
  pointer-events: none;
  z-index: 2;
}
section[data-scroll-section].is-inview::before {
  width: 100%;
  opacity: 0.45;
}
.hero::before, .marquee::before { display: none; }

/* ============================================================
 *  Per-section theming (light <-> dark alternation)
 * ============================================================ */

/* Dark-theme sections: light text + mint accent on dark bg */
section[data-theme="dark"] {
  --fg: #ECE9E2;
  --fg-mute: #9b969f;
  --accent: #71eac6;
  --border: rgba(236, 233, 226, 0.14);
  color: var(--fg);
}
section[data-theme="dark"] h1,
section[data-theme="dark"] h2,
section[data-theme="dark"] h3 { color: var(--fg); }
section[data-theme="dark"] p { color: var(--fg-mute); }

section[data-theme="dark"] .work__item:hover,
section[data-theme="dark"] .service:hover,
section[data-theme="dark"] .model:hover {
  background: rgba(113,234,198,0.06);
}
section[data-theme="dark"] .model {
  background: rgba(255,255,255,0.03);
  border-color: var(--border);
}
section[data-theme="dark"] .model:hover { border-color: var(--accent); }
section[data-theme="dark"] .model ul li { border-top-color: var(--border); color: var(--fg); }
section[data-theme="dark"] .model__tag { border-color: var(--accent); color: var(--accent); }

/* ============================================================
 *  Header — driven by scroll direction, not by section.
 *  .is-dark  → at-top + scrolling-down (default)
 *  .is-light → scrolling-up
 * ============================================================ */
.site-header {
  border-bottom: 0;
  transition:
    background-color 0.5s var(--ease),
    color 0.5s var(--ease);
}

/* Dark skin — deep purple bar, light text, mint accent */
.site-header.is-dark {
  background-color: #363434;
  color: #ECE9E2;
}
.site-header.is-dark .logo__mark,
.site-header.is-dark .nav a:hover,
.site-header.is-dark [data-swap]::after {
  color: #71eac6;
}
.site-header.is-dark .btn--ghost {
  border-color: #71eac6;
  color: #71eac6;
}
.site-header.is-dark .btn--ghost:hover {
  background: #71eac6;
  color: #363434;
}
.site-header.is-dark .btn--ghost:hover [data-swap]::after { color: #363434; }

/* Light skin — mint bar, dark text, deep accent */
.site-header.is-light {
  background-color: #e1eeec;
  color: #363434;
}
.site-header.is-light .logo__mark,
.site-header.is-light .nav a:hover,
.site-header.is-light [data-swap]::after {
  color: #62929A;
}
.site-header.is-light .btn--ghost {
  border-color: #62929A;
  color: #62929A;
}
.site-header.is-light .btn--ghost:hover {
  background: #62929A;
  color: #e1eeec;
}
.site-header.is-light .btn--ghost:hover [data-swap]::after { color: #e1eeec; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  :root { --fs-base: 16px; }
  .nav { display: none; }
  .hero { padding: 8rem 0 4rem; }
  .hero__title { max-width: 100%; }
  .work { grid-template-columns: 1fr; }
  .work__item, .work__item:nth-child(2n) { border-right: 0; }
  .services { grid-template-columns: 1fr 1fr; }
  .service:last-child { grid-column: 1 / -1; }
  .service { border-right: 1px solid var(--border); }
  .models { grid-template-columns: 1fr; }
  .marquee__track { font-size: 1.1rem; }
  body { cursor: auto; }
  .cursor { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
  .reveal-mask__inner { transform: none; }
  .reveal-line, .work__item, .service, .model { opacity: 1; transform: none; }
}