/* ==========================================================================
   Krainii Studio — design system
   Typography: Inter only, 300 / 500 / 800, extreme scale
   Color: monochrome ramp + single accent (#ff4a1c)
   Theme: light (default) + dark via [data-theme="dark"]
   ========================================================================== */

:root {
  /* Gray ramp (light) */
  --g-00: #ffffff;
  --g-05: #f4f2ed;  /* bg */
  --g-10: #e8e6e0;
  --g-20: #d4d2cc;  /* line */
  --g-40: #9a9892;
  --g-60: #5a5956;
  --g-80: #2a2a28;
  --g-95: #0a0a0a;  /* ink */

  --bg:       var(--g-05);
  --bg-soft:  var(--g-10);
  --ink:      var(--g-95);
  --ink-soft: var(--g-80);
  --ink-mute: var(--g-60);
  --line:     var(--g-95);    /* hard rules are still ink */
  --line-soft:var(--g-20);

  --accent:     #ff4a1c;
  --accent-ink: #0a0a0a;

  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --max: 1320px;
  --gutter: 40px;

  --ease: cubic-bezier(.2,.7,.2,1);
  --dur: 180ms;

  color-scheme: light;
}

:root[data-theme="dark"] {
  --g-05: #0d0d0c;  /* bg */
  --g-10: #151513;
  --g-20: #262622;  /* soft line */
  --g-40: #5a5956;
  --g-60: #9a9892;
  --g-80: #d4d2cc;
  --g-95: #f4f2ed;  /* ink */

  --bg:       var(--g-05);
  --bg-soft:  var(--g-10);
  --ink:      var(--g-95);
  --ink-soft: var(--g-80);
  --ink-mute: var(--g-60);
  --line:     var(--g-95);
  --line-soft:var(--g-20);

  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.5;
  font-weight: 500;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "ss01", "cv11";
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
a { color: var(--ink); }
::selection { background: var(--accent); color: var(--accent-ink); }

.container { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }

/* 12-col grid helper — lets sections snap to a shared spine */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

/* ---------- NAV ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in oklab, var(--bg) 92%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1.5px solid var(--ink);
}
.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--max);
  margin: 0 auto;
  padding: 22px var(--gutter);
}
.brand {
  font-family: var(--sans);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.035em;
  color: var(--ink);
  text-decoration: none;
  text-transform: uppercase;
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  line-height: 1;
  font-feature-settings: "ss01", "cv11", "tnum";
}
.brand .ast {
  color: var(--accent);
  font-weight: 800;
  font-size: 0.7em;
  transform: translateY(-0.15em);
  display: inline-block;
  margin-left: 1px;
}
.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-links a {
  position: relative;
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink);
  text-decoration: none;
  padding: 6px 0;
  transition: color var(--dur) var(--ease);
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur) var(--ease);
}
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }
.nav-links a:hover { color: var(--ink); }

/* Theme toggle */
.theme-toggle {
  width: 40px; height: 40px;
  border: 1.5px solid var(--ink);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.theme-toggle:hover { background: var(--ink); color: var(--bg); }
.theme-toggle svg { width: 18px; height: 18px; display: block; }
.theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

.nav-btn {
  background: var(--ink);
  color: var(--bg) !important;
  padding: 12px 20px;
  border-radius: 0;
  border: 2px solid var(--ink);
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.nav-btn::after { display: none !important; }
.nav-btn:hover { background: var(--accent); border-color: var(--accent); color: var(--accent-ink) !important; }

/* ---------- TYPE ---------- */
h1, h2, h3, h4 {
  font-family: var(--sans);
  color: var(--ink);
  margin: 0 0 0.5em;
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 0.88;
  text-transform: none;
  text-wrap: balance;
}
h1 { font-size: clamp(56px, 10vw, 168px); letter-spacing: -0.055em; line-height: 0.82; }
h2 { font-size: clamp(40px, 6vw, 96px); }
h3 { font-size: 32px; letter-spacing: -0.025em; line-height: 0.95; }
h4 { font-size: 14px; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-mute); }
p { margin: 0 0 1em; color: var(--ink-soft); font-weight: 500; }
.lead { font-size: 22px; line-height: 1.4; color: var(--ink); max-width: 760px; font-weight: 300; letter-spacing: -0.01em; }

/* Label: same font, tracked out, small caps feel */
.mono-label {
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-mute);
  font-feature-settings: "tnum", "ss01";
}
.mono-label .n { color: var(--accent); margin-right: 6px; }

/* ---------- SECTIONS ---------- */
section { padding: 120px 0; border-bottom: 1.5px solid var(--ink); }
section:last-of-type { border-bottom: none; }
section.dark {
  background: var(--ink);
  color: var(--bg);
}
section.dark h1, section.dark h2, section.dark h3 { color: var(--bg); }
section.dark p { color: color-mix(in oklab, var(--bg) 80%, transparent); }
section.dark .mono-label { color: color-mix(in oklab, var(--bg) 55%, transparent); }

/* ---------- HERO ---------- */
.hero { padding: 120px 0 160px; }
.hero h1 { margin-top: 40px; margin-bottom: 48px; }
.hero h1 .accent { color: var(--accent); font-style: italic; font-weight: 800; }
.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-block;
  padding: 20px 32px;
  border: 2px solid var(--ink);
  background: var(--ink);
  color: var(--bg);
  text-decoration: none;
  font-weight: 800;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.btn:hover { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-out { background: transparent; color: var(--ink); }
.btn-out:hover { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.btn-accent { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-accent:hover { background: var(--ink); color: var(--bg); border-color: var(--ink); }

/* ---------- STATS ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1.5px solid var(--ink);
  border-bottom: 1.5px solid var(--ink);
}
.stats.stats-3 { grid-template-columns: repeat(3, 1fr); }
.stat {
  padding: 40px 32px;
  border-right: 1.5px solid var(--ink);
}
.stat:last-child { border-right: none; }
.stat .n {
  font-size: 64px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.05em;
  color: var(--ink);
  font-feature-settings: "tnum", "ss01";
}
.stat .n .plus { color: var(--accent); }
.stat .l { font-size: 11px; text-transform: uppercase; letter-spacing: 0.12em; margin-top: 12px; color: var(--ink-mute); font-weight: 500; }
@media (max-width: 900px) { .stats { grid-template-columns: 1fr 1fr; } .stat { border-bottom: 1.5px solid var(--ink); } }

/* ---------- OFFERS ---------- */
.offers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1.5px solid var(--ink);
}
.offer {
  padding: 48px 36px;
  border-right: 1.5px solid var(--ink);
  background: var(--bg);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
  position: relative;
  min-height: 480px;
  display: flex;
  flex-direction: column;
}
.offer:last-child { border-right: none; }
.offer:hover { background: var(--ink); color: var(--bg); }
.offer:hover h3, .offer:hover .mono-label, .offer:hover p, .offer:hover .price { color: var(--bg); }
.offer:hover .mono-label .n { color: var(--accent); }
.offer:hover .more { color: var(--accent); border-color: var(--accent); }
.offer h3 { margin: 24px 0 16px; font-size: 38px; }
.offer p { flex-grow: 1; margin-bottom: 24px; }
.offer .price { font-size: 15px; font-weight: 500; margin-bottom: 6px; letter-spacing: 0.02em; font-feature-settings: "tnum"; }
.offer .more { font-size: 12px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink); text-decoration: none; border-bottom: 1.5px solid currentColor; padding-bottom: 2px; align-self: flex-start; font-weight: 500; transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease); }
.offer a.cover { position: absolute; inset: 0; }
@media (max-width: 900px) { .offers { grid-template-columns: 1fr; } .offer { border-right: none; border-bottom: 1.5px solid var(--ink); } }

/* ---------- TWO COL ---------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 80px;
  align-items: start;
}
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; gap: 40px; } }

/* ---------- BIG QUOTE ---------- */
.big-quote {
  font-size: clamp(32px, 5vw, 72px);
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.035em;
  max-width: 1100px;
  color: var(--bg);
}
.big-quote .accent { color: var(--accent); font-style: italic; }

/* ---------- BLOCK LIST ---------- */
ul.block-list { list-style: none; padding: 0; margin: 0; }
ul.block-list li {
  padding: 20px 0;
  border-bottom: 1.5px solid var(--ink);
  font-size: 20px;
  font-weight: 500;
  display: flex;
  gap: 24px;
  letter-spacing: -0.01em;
}
ul.block-list li::before {
  content: "→";
  color: var(--accent);
  font-weight: 800;
  flex-shrink: 0;
}

/* ---------- FORM ---------- */
.form-big {
  display: flex;
  gap: 0;
  max-width: 600px;
  margin-top: 32px;
  border: 2px solid var(--ink);
  background: var(--bg);
}
.form-big input {
  flex: 1;
  padding: 24px;
  border: none;
  font-family: var(--sans);
  font-size: 18px;
  font-weight: 500;
  background: transparent;
  color: var(--ink);
  outline: none;
}
.form-big input::placeholder { color: var(--ink-mute); }
.form-big button {
  padding: 24px 32px;
  border: none;
  background: var(--accent);
  color: var(--accent-ink);
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  border-left: 2px solid var(--ink);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.form-big button:hover { background: var(--ink); color: var(--bg); }

/* ---------- CASE STRIP ---------- */
.case-strip { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1.5px solid var(--ink); }
.case-strip .cell { padding: 40px 28px; border-right: 1.5px solid var(--ink); }
.case-strip .cell:last-child { border-right: none; }
.case-strip .n { font-size: 48px; font-weight: 800; letter-spacing: -0.04em; color: var(--accent); line-height: 1; font-feature-settings: "tnum"; }
.case-strip .l { margin-top: 12px; font-size: 14px; font-weight: 500; }
@media (max-width: 900px) { .case-strip { grid-template-columns: 1fr 1fr; } }

/* ---------- FOOTER ---------- */
footer.studio-foot {
  background: var(--ink);
  color: var(--bg);
  padding: 96px 0 40px;
}
footer.studio-foot h1 {
  font-size: clamp(64px, 11vw, 180px);
  color: var(--bg);
  margin-bottom: 40px;
}
footer.studio-foot h1 .accent { color: var(--accent); }
footer.studio-foot .foot-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-top: 96px;
  padding-top: 40px;
  border-top: 1.5px solid color-mix(in oklab, var(--bg) 20%, transparent);
}
@media (max-width: 800px) { footer.studio-foot .foot-grid { grid-template-columns: 1fr 1fr; } }
footer.studio-foot h4 { font-size: 11px; text-transform: uppercase; letter-spacing: 0.14em; color: color-mix(in oklab, var(--bg) 55%, transparent); margin: 0 0 16px; font-weight: 500; }
footer.studio-foot ul { list-style: none; padding: 0; margin: 0; }
footer.studio-foot ul li { margin-bottom: 10px; }
footer.studio-foot a { color: var(--bg); text-decoration: none; font-size: 15px; font-weight: 500; transition: color var(--dur) var(--ease); }
footer.studio-foot a:hover { color: var(--accent); }
footer.studio-foot .bottom { margin-top: 40px; padding-top: 24px; border-top: 1.5px solid color-mix(in oklab, var(--bg) 20%, transparent); font-size: 11px; color: color-mix(in oklab, var(--bg) 55%, transparent); text-transform: uppercase; letter-spacing: 0.12em; font-weight: 500; }

/* ---------- OFFER DETAIL (services page) ---------- */
section.offer-detail {
  padding: 0;
  border-bottom: none;
  border-top: 1.5px solid var(--ink);
}
.offer-block {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 72px;
  padding: 96px 0;
  border-bottom: 1.5px solid var(--ink);
  align-items: start;
}
.offer-block.last { border-bottom: none; }
.offer-rail { position: sticky; top: 110px; }
.offer-rail .mono-label { margin: 0 0 12px; }
.offer-rail .price-big {
  font-size: 56px;
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: -0.045em;
  color: var(--ink);
  margin: 28px 0 20px;
  font-feature-settings: "tnum";
}
.offer-rail .price-big span {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink-mute);
  display: inline-block;
  margin-top: 6px;
}
.offer-rail .tagline {
  font-size: 18px;
  line-height: 1.4;
  color: var(--ink-soft);
  font-weight: 500;
  letter-spacing: -0.01em;
  max-width: 280px;
}
.offer-rail .tagline em { font-style: italic; }

.offer-body h3 {
  font-size: clamp(44px, 6vw, 72px);
  letter-spacing: -0.04em;
  margin: 0 0 24px;
}
.offer-body .offer-lede {
  font-size: 22px;
  line-height: 1.4;
  color: var(--ink);
  font-weight: 300;
  letter-spacing: -0.01em;
  max-width: 640px;
  margin: 0 0 56px;
}
.offer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  margin-bottom: 56px;
  padding: 40px 0;
  border-top: 1.5px solid var(--line-soft);
  border-bottom: 1.5px solid var(--line-soft);
}
.offer-grid h4 {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-mute);
  margin: 0 0 16px;
  font-weight: 500;
  text-transform: uppercase;
}
ul.check { list-style: none; padding: 0; margin: 0; }
ul.check li {
  position: relative;
  padding: 10px 0 10px 28px;
  font-size: 17px;
  font-weight: 500;
  color: var(--ink);
  border-bottom: 1px solid var(--line-soft);
  letter-spacing: -0.005em;
}
ul.check li:last-child { border-bottom: none; }
ul.check li::before {
  content: "✓";
  position: absolute;
  left: 0; top: 10px;
  color: var(--accent);
  font-weight: 800;
}
.offer-grid .excl {
  font-size: 16px;
  font-style: italic;
  color: var(--ink-mute);
  line-height: 1.5;
  margin: 0;
  font-weight: 300;
}
.offer-grid .outcome {
  font-size: 18px;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.4;
  letter-spacing: -0.01em;
  margin: 0;
}

@media (max-width: 900px) {
  .offer-block { grid-template-columns: 1fr; gap: 40px; padding: 64px 0; }
  .offer-rail { position: static; }
  .offer-grid { grid-template-columns: 1fr; gap: 40px; }
}

/* ---------- PAGE HEAD ---------- */
.page-head { padding: 140px 0 80px; }
.page-head h1 { margin-bottom: 24px; }

/* ---------- REVEAL / SCROLL FADE ---------- */
.reveal {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 600ms var(--ease), transform 600ms var(--ease);
  will-change: opacity, transform;
}
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, a, .offer { transition: none !important; }
}