/* ==========================================================================
   combin·ai — editorial site system
   ========================================================================== */

:root {
  --paper: #F8F2E4;       /* hero / page paper */
  --paper-2: #F1E9D6;     /* warm bone */
  --paper-3: #E7DCC3;     /* warmest accent */
  --ink: #15110C;         /* near-black, warm */
  --ink-2: #2A231C;
  --ink-soft: #6A5F50;    /* body text */
  --ink-mute: #9C907E;    /* labels */
  --rule: rgba(21, 17, 12, 0.10);
  --rule-soft: rgba(21, 17, 12, 0.05);
  --terra: #B85D3F;       /* primary accent */
  --terra-d: #8E3F23;
  --terra-soft: rgba(184, 93, 63, 0.10);

  --f: 'Fraunces', 'Times New Roman', serif;
  --it: 'Instrument Serif', 'Times New Roman', serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;

  --max: 1320px;
  --gutter: clamp(20px, 5vw, 80px);
  --section-y: clamp(80px, 12vh, 140px);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection { background: var(--terra); color: var(--paper); }

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* ==========================================================================
   NAV
   ========================================================================== */
.nav {
  position: sticky; top: 0; z-index: 200;
  height: 68px;
  padding: 0 var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  background: rgba(248, 242, 228, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--rule);
}
.nav-logo {
  font: 400 24px/1 var(--f);
  letter-spacing: -.025em;
  color: var(--ink);
  display: inline-flex; align-items: baseline; gap: 1px;
}
.nav-logo em {
  font: italic 400 24px/1 var(--it);
  color: var(--terra);
}
.nav-links {
  display: flex; align-items: center; gap: 4px;
  list-style: none;
}
.nav-links a {
  font: 500 11px/1 var(--mono);
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-soft);
  padding: 10px 14px;
  border-radius: 99px;
  transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--ink); background: rgba(21, 17, 12, 0.05); }
.nav-links a.active { color: var(--terra); }
.nav-r { display: flex; align-items: center; gap: 8px; }
.lang-btn {
  font: 500 11px/1 var(--mono);
  letter-spacing: .16em; text-transform: uppercase;
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  padding: 9px 14px;
  border-radius: 99px;
  transition: all .2s;
}
.lang-btn:hover { border-color: var(--ink); color: var(--ink); }
.nav-cta {
  font: 500 11.5px/1 var(--mono);
  letter-spacing: .14em; text-transform: uppercase;
  background: var(--ink); color: var(--paper);
  padding: 12px 18px;
  border-radius: 99px;
  display: inline-flex; align-items: center; gap: 8px;
  transition: background .2s, transform .15s;
}
.nav-cta:hover { background: var(--terra); }
.nav-cta:active { transform: scale(.97); }
.nav-cta .dot { width: 6px; height: 6px; border-radius: 99px; background: var(--terra); }
.nav-cta:hover .dot { background: var(--paper); }
.nav-menu-btn { display: none; }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-menu-btn {
    display: inline-flex; align-items: center; justify-content: center;
    width: 38px; height: 38px;
    border: 1px solid var(--rule);
    border-radius: 99px;
  }
  .nav-menu-btn span {
    width: 16px; height: 1.5px; background: var(--ink); position: relative;
  }
  .nav-menu-btn span::before, .nav-menu-btn span::after {
    content: ""; position: absolute; left: 0; width: 100%; height: 1.5px; background: var(--ink);
  }
  .nav-menu-btn span::before { top: -5px; }
  .nav-menu-btn span::after { top: 5px; }
}

/* mobile menu sheet */
.mobile-sheet {
  position: fixed; inset: 0;
  background: var(--paper);
  z-index: 300;
  padding: 24px var(--gutter);
  display: none; flex-direction: column;
}
.mobile-sheet.open { display: flex; }
.mobile-sheet-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 60px; }
.mobile-sheet a {
  display: block;
  font: 300 44px/1 var(--f);
  letter-spacing: -.03em;
  color: var(--ink);
  padding: 14px 0;
  border-bottom: 1px solid var(--rule);
}
.mobile-sheet a em { font: italic 400 44px/1 var(--it); color: var(--terra); }

/* ==========================================================================
   TYPOGRAPHY HELPERS
   ========================================================================== */
.tag {
  display: inline-flex; align-items: center; gap: 10px;
  font: 500 10.5px/1 var(--mono);
  letter-spacing: .22em; text-transform: uppercase;
  color: var(--ink-soft);
}
.tag::before {
  content: ""; width: 26px; height: 1px; background: var(--terra);
}
.on-dark .tag { color: var(--paper-3); }
.on-terra .tag { color: rgba(248, 242, 228, .8); }
.on-terra .tag::before { background: var(--paper); }

.eyebrow {
  font: 500 10.5px/1 var(--mono);
  letter-spacing: .22em; text-transform: uppercase;
  color: var(--terra);
}

.h-display {
  font: 300 clamp(56px, 6.5vw, 104px)/.88 var(--f);
  letter-spacing: -.045em;
  color: var(--ink);
  text-wrap: balance;
}
.h-display em { font: italic 400 1em/.88 var(--it); color: var(--terra); }

.h-1 {
  font: 300 clamp(44px, 5.2vw, 80px)/.9 var(--f);
  letter-spacing: -.04em;
  color: var(--ink);
  text-wrap: balance;
}
.h-1 em { font: italic 400 1em/.9 var(--it); color: var(--terra); }

.h-2 {
  font: 300 clamp(34px, 4vw, 56px)/.95 var(--f);
  letter-spacing: -.035em;
  color: var(--ink);
  text-wrap: balance;
}
.h-2 em { font: italic 400 1em/.95 var(--it); color: var(--terra); }

.h-3 {
  font: 400 clamp(22px, 2vw, 28px)/1.15 var(--f);
  letter-spacing: -.02em;
  color: var(--ink);
}
.h-3 em { font: italic 400 1em/1.15 var(--it); color: var(--terra); }

.lede {
  font: 400 clamp(16px, 1.2vw, 18px)/1.6 var(--sans);
  color: var(--ink-soft);
  text-wrap: pretty;
}
.on-dark .lede { color: #C7BCA8; }
.on-dark .h-1, .on-dark .h-2, .on-dark .h-3, .on-dark .h-display { color: var(--paper); }
.on-terra .h-1, .on-terra .h-2 { color: var(--paper); }
.on-terra .h-1 em, .on-terra .h-2 em { color: var(--ink); }
.on-terra .lede { color: rgba(248, 242, 228, .88); }

/* ==========================================================================
   STORE BADGES
   ========================================================================== */
.badges { display: flex; gap: 10px; flex-wrap: wrap; }
.badge {
  display: inline-flex; align-items: center; gap: 12px;
  background: var(--ink); color: var(--paper);
  padding: 13px 20px;
  border-radius: 14px;
  transition: background .2s, transform .15s;
  border: 1.5px solid var(--ink);
}
.badge:hover { background: var(--terra); border-color: var(--terra); }
.badge:active { transform: scale(.98); }
.badge svg { flex-shrink: 0; }
.badge-text { display: flex; flex-direction: column; gap: 3px; line-height: 1; }
.badge-sub {
  font: 500 9px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase;
  color: rgba(248, 242, 228, .55);
}
.badge-name { font: 600 15px/1 var(--sans); letter-spacing: -.01em; }

.badge.ghost {
  background: transparent; color: var(--ink);
  border: 1.5px solid var(--ink);
}
.badge.ghost .badge-sub { color: var(--ink-mute); }
.badge.ghost:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.badge.ghost:hover .badge-sub { color: rgba(248,242,228,.55); }

/* ==========================================================================
   PHONE MOCKUP
   ========================================================================== */
.mockup {
  position: relative;
  width: 100%;
}
.mockup-shell {
  position: relative; width: 100%;
  aspect-ratio: 340/706;
  background: #0d0d0e;
  border-radius: 13%;
  box-shadow:
    0 0 0 1.5px #2a2826,
    0 0 0 3.5px #0a0908,
    0 60px 110px -20px rgba(21, 17, 12, .25),
    0 12px 28px rgba(21, 17, 12, .12);
}
.mockup-screen {
  position: absolute; inset: 2%;
  border-radius: 11%;
  overflow: hidden;
  background: var(--paper-3);
}
.mockup-screen img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: top;
}
.mockup-notch {
  position: absolute; top: 1.4%; left: 50%;
  transform: translateX(-50%);
  width: 30%; height: 3.8%;
  background: #0a0908;
  border-radius: 99px; z-index: 5;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
footer {
  background: var(--ink); color: var(--paper);
  padding: clamp(70px, 9vh, 110px) var(--gutter) 36px;
  position: relative; overflow: hidden;
}
footer::before {
  content: "c";
  position: absolute;
  left: -60px; bottom: -240px;
  font: italic 300 700px/.78 var(--f);
  letter-spacing: -.07em;
  color: rgba(248, 242, 228, .04);
  pointer-events: none; user-select: none;
}
.footer-inner {
  max-width: var(--max); margin: 0 auto;
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(248, 242, 228, .1);
}
@media (max-width: 880px) {
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 40px 32px; }
}
@media (max-width: 520px) {
  .footer-inner { grid-template-columns: 1fr; }
}
.footer-brand h3 {
  font: 400 32px/1 var(--f);
  letter-spacing: -.025em;
  margin-bottom: 14px;
}
.footer-brand h3 em { font: italic 400 32px/1 var(--it); color: var(--terra); }
.footer-brand p {
  font: 400 14px/1.65 var(--sans);
  color: #A89C88;
  max-width: 320px;
  margin-bottom: 24px;
}
.footer-brand .badges { gap: 8px; }
.footer-brand .badge {
  padding: 10px 14px;
  background: rgba(248, 242, 228, .05);
  border: 1.5px solid rgba(248, 242, 228, .12);
}
.footer-brand .badge:hover { background: var(--terra); border-color: var(--terra); }
.footer-col h4 {
  font: 500 10.5px/1 var(--mono);
  letter-spacing: .22em; text-transform: uppercase;
  color: var(--terra);
  margin-bottom: 18px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.footer-col a {
  font: 400 14px/1.4 var(--sans);
  color: #C7BCA8;
  transition: color .2s;
}
.footer-col a:hover { color: var(--paper); }
.footer-bottom {
  max-width: var(--max); margin: 0 auto;
  padding-top: 28px;
  position: relative; z-index: 1;
  display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap;
}
.footer-copy {
  font: 500 10.5px/1.4 var(--mono);
  letter-spacing: .12em; text-transform: uppercase;
  color: rgba(248, 242, 228, .35);
}
.footer-meta {
  font: 500 10.5px/1.4 var(--mono);
  letter-spacing: .12em; text-transform: uppercase;
  color: rgba(248, 242, 228, .35);
  display: flex; gap: 6px; align-items: center;
}
.footer-meta .dot { width: 6px; height: 6px; background: var(--terra); border-radius: 99px; animation: pulse 1.8s infinite; }
@keyframes pulse { 0%,100%{opacity:.4;transform:scale(.85)} 50%{opacity:1;transform:scale(1.15)} }

/* ==========================================================================
   REVEAL ANIMATION
   ========================================================================== */
[data-reveal] {
  opacity: 0; transform: translateY(24px);
  transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1);
}
[data-reveal].v { opacity: 1; transform: none; }
[data-reveal-d="1"] { transition-delay: .1s; }
[data-reveal-d="2"] { transition-delay: .2s; }
[data-reveal-d="3"] { transition-delay: .3s; }
[data-reveal-d="4"] { transition-delay: .4s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}

/* ==========================================================================
   GENERIC SECTION
   ========================================================================== */
.section { position: relative; }
.section-inner {
  max-width: var(--max); margin: 0 auto;
  padding: var(--section-y) var(--gutter);
}
.section.dark { background: var(--ink); color: var(--paper); }
.section.terra { background: var(--terra); color: var(--paper); }
.section.bone { background: var(--paper-2); }

.kicker-row {
  display: flex; justify-content: space-between; align-items: baseline;
  gap: 24px; flex-wrap: wrap;
  margin-bottom: 56px;
}
.kicker-row .h-2 { max-width: 720px; }

/* divider rule with label */
.rule-label {
  display: flex; align-items: center; gap: 18px;
  font: 500 10.5px/1 var(--mono);
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--ink-mute);
  padding: 18px 0;
  border-bottom: 1px solid var(--rule);
}
.rule-label::before {
  content: ""; flex: 1; height: 1px; background: var(--rule);
}
.rule-label.right::before { display: none; }
.rule-label.right::after { content: ""; flex: 1; height: 1px; background: var(--rule); }

/* ==========================================================================
   BUTTONS / LINKS
   ========================================================================== */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font: 500 11.5px/1 var(--mono);
  letter-spacing: .14em; text-transform: uppercase;
  padding: 14px 22px;
  border-radius: 99px;
  background: var(--ink); color: var(--paper);
  transition: background .2s, transform .15s;
}
.btn:hover { background: var(--terra); }
.btn:active { transform: scale(.97); }
.btn.ghost { background: transparent; color: var(--ink); border: 1.5px solid var(--ink); }
.btn.ghost:hover { background: var(--ink); color: var(--paper); }
.btn.terra { background: var(--terra); color: var(--paper); }
.btn.terra:hover { background: var(--terra-d); }

.arrow-link {
  display: inline-flex; align-items: center; gap: 10px;
  font: 500 11.5px/1 var(--mono);
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink);
  padding-bottom: 5px;
  border-bottom: 1px solid var(--ink);
  transition: gap .25s, color .2s, border-color .2s;
}
.arrow-link:hover { gap: 14px; color: var(--terra); border-color: var(--terra); }
.arrow-link::after { content: "→"; font-family: var(--sans); }
.on-dark .arrow-link, .on-terra .arrow-link {
  color: var(--paper); border-color: rgba(248,242,228,.4);
}
.on-dark .arrow-link:hover, .on-terra .arrow-link:hover {
  color: var(--terra); border-color: var(--terra);
}
.on-terra .arrow-link:hover { color: var(--ink); border-color: var(--ink); }

/* ==========================================================================
   FORMS
   ========================================================================== */
.field { display: flex; flex-direction: column; gap: 8px; }
.field label {
  font: 500 10.5px/1 var(--mono);
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--ink-mute);
}
.field input, .field select, .field textarea {
  font: 400 15px/1.4 var(--sans);
  color: var(--ink);
  background: var(--paper);
  border: 1.5px solid var(--rule);
  padding: 14px 16px;
  border-radius: 12px;
  transition: border-color .2s, background .2s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--ink);
  background: var(--paper);
}
.field textarea { resize: vertical; min-height: 140px; }