/* =========================================================
   Kaan Trade Consultancy — Design System
   Display: Bricolage Grotesque · Body: Inter · Mono: Space Mono
   ========================================================= */

:root {
  /* Core palette (derived from logo teal→mint + PDF deep navy) */
  --ink:            #071A1C;
  --ink-2:          #0B2427;
  --ink-3:          #0F2E30;
  --teal:           #157A72;
  --teal-deep:      #0E5750;
  --mint:           #3FDBC4;
  --mint-soft:      #8DE9DC;

  --paper:          #EFF3F1;
  --paper-2:        #E4ECE9;
  --paper-3:        #D8E3DF;

  --text:           #0C1F1E;
  --text-dim:       #4C5C59;
  --text-faint:     #7A8A87;
  --invert:         #EAF4F1;
  --invert-dim:     rgba(234, 244, 241, 0.64);
  --invert-faint:   rgba(234, 244, 241, 0.40);

  --line:           rgba(12, 31, 30, 0.12);
  --line-strong:    rgba(12, 31, 30, 0.22);
  --line-invert:    rgba(141, 233, 220, 0.16);

  --grad:           linear-gradient(118deg, var(--teal) 0%, var(--mint) 100%);
  --grad-soft:      linear-gradient(118deg, rgba(21,122,114,.14), rgba(63,219,196,.14));

  /* Type */
  --f-display: "Bricolage Grotesque", "Segoe UI", sans-serif;
  --f-body:    "Inter", "Segoe UI", system-ui, sans-serif;
  --f-mono:    "Space Mono", "Courier New", monospace;

  /* Rhythm */
  --wrap: 1180px;
  --gutter: clamp(20px, 5vw, 64px);
  --radius: 14px;
  --radius-lg: 22px;

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--f-body);
  background: var(--paper);
  color: var(--text);
  line-height: 1.62;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; padding: 0; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* ---------- Layout helpers ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(72px, 11vw, 140px); position: relative; }
.section--tight { padding-block: clamp(52px, 7vw, 88px); }

/* ---------- Typography ---------- */
.eyebrow {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--teal);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 26px; height: 1px;
  background: var(--teal);
  opacity: .5;
}
.on-dark .eyebrow { color: var(--mint); }
.on-dark .eyebrow::before { background: var(--mint); }

h1, h2, h3, h4 { font-family: var(--f-display); font-weight: 600; line-height: 1.04; letter-spacing: -0.02em; color: inherit; }
.display {
  font-size: clamp(2.6rem, 6.4vw, 5.1rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 0.98;
}
.h2 { font-size: clamp(2rem, 4vw, 3.15rem); letter-spacing: -0.028em; }
.h3 { font-size: clamp(1.3rem, 2vw, 1.6rem); }
.lead { font-size: clamp(1.05rem, 1.5vw, 1.28rem); line-height: 1.55; color: var(--text-dim); }
.on-dark .lead { color: var(--invert-dim); }

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 26px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), background .3s var(--ease);
  will-change: transform;
}
.btn svg { width: 17px; height: 17px; transition: transform .3s var(--ease); }
.btn:hover svg { transform: translateX(4px); }
.btn--primary {
  background: var(--grad);
  color: #04211E;
  box-shadow: 0 10px 26px -12px rgba(21,122,114,.7);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 16px 34px -12px rgba(21,122,114,.8); }
.btn--ghost {
  border: 1px solid var(--line-strong);
  color: var(--text);
}
.on-dark .btn--ghost { border-color: var(--line-invert); color: var(--invert); }
.btn--ghost:hover { background: var(--paper-2); transform: translateY(-2px); }
.on-dark .btn--ghost:hover { background: rgba(255,255,255,.05); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(239,243,241,.82);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 74px;
}
.nav__logo img { height: 34px; width: auto; }
.nav__links { display: flex; align-items: center; gap: 6px; }
.nav__links a {
  font-size: 15px; font-weight: 500;
  padding: 9px 16px; border-radius: 100px;
  color: var(--text-dim);
  transition: color .2s, background .2s;
}
.nav__links a:hover { color: var(--text); background: var(--paper-2); }
.nav__links a.is-active { color: var(--teal); }
.nav__cta { margin-left: 8px; }
.nav__cta .btn { padding: 11px 20px; }
.nav__toggle { display: none; width: 44px; height: 44px; border-radius: 10px; }
.nav__toggle span { display:block; width: 22px; height: 2px; background: var(--text); margin: 5px auto; transition: .3s var(--ease); }
.nav__toggle.is-open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2){ opacity: 0; }
.nav__toggle.is-open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: var(--ink);
  color: var(--invert);
  overflow: hidden;
  padding-block: clamp(90px, 13vw, 168px) clamp(80px, 11vw, 150px);
}
.hero__grid-lines {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--line-invert) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-invert) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(120% 90% at 70% 20%, #000 20%, transparent 78%);
  opacity: .5;
  pointer-events: none;
}
.hero__glow {
  position: absolute; z-index: 0;
  width: 60vw; height: 60vw; max-width: 720px; max-height: 720px;
  right: -8%; top: -18%;
  background: radial-gradient(circle, rgba(63,219,196,.20), transparent 62%);
  filter: blur(6px);
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 2; }
.hero__inner { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(32px, 5vw, 72px); align-items: center; }
.hero__eyebrow { margin-bottom: 26px; }
.hero h1 { margin-bottom: 26px; }
.hero__lead { max-width: 46ch; margin-bottom: 36px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* Signature: structured-growth motif */
.throughput { position: relative; aspect-ratio: 1 / 1.02; width: 100%; }
.throughput svg { width: 100%; height: 100%; overflow: visible; }
.tp-bar { transform-origin: bottom; animation: tpGrow 4.8s var(--ease) infinite; }
.tp-bar:nth-child(2){ animation-delay: .3s; }
.tp-bar:nth-child(3){ animation-delay: .6s; }
.tp-bar:nth-child(4){ animation-delay: .9s; }
.tp-bar:nth-child(5){ animation-delay: 1.2s; }
@keyframes tpGrow {
  0%, 100% { transform: scaleY(.62); opacity: .55; }
  45%      { transform: scaleY(1);   opacity: 1; }
}

/* ---------- Marquee strip ---------- */
.strip {
  background: var(--ink-2);
  color: var(--invert-dim);
  border-block: 1px solid var(--line-invert);
  overflow: hidden;
  padding-block: 18px;
}
.strip__row { display: flex; gap: 56px; width: max-content; animation: slide 34s linear infinite; }
.strip__row span { font-family: var(--f-mono); font-size: 13px; letter-spacing: .14em; text-transform: uppercase; display: inline-flex; align-items: center; gap: 56px; white-space: nowrap; }
.strip__row span::after { content: "◆"; color: var(--mint); font-size: 8px; }
@keyframes slide { to { transform: translateX(-50%); } }

/* ---------- Section headers ---------- */
.sec-head { max-width: 720px; margin-bottom: clamp(40px, 5vw, 64px); }
.sec-head .eyebrow { margin-bottom: 20px; }
.sec-head p { margin-top: 18px; }
.sec-head--split { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: end; max-width: none; }
@media (max-width: 720px){ .sec-head--split { grid-template-columns: 1fr; } }

/* ---------- Services ledger ---------- */
.ledger { border-top: 1px solid var(--line); }
.svc {
  display: grid;
  grid-template-columns: 88px 1.1fr 1.4fr auto;
  gap: clamp(16px, 3vw, 48px);
  align-items: start;
  padding-block: clamp(30px, 4vw, 46px);
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: background .35s var(--ease);
}
.svc:hover { background: var(--paper-2); }
.svc__no { font-family: var(--f-mono); font-size: 14px; color: var(--teal); padding-top: 6px; }
.svc__title { font-size: clamp(1.35rem, 2.2vw, 1.85rem); }
.svc__desc { color: var(--text-dim); font-size: 15.5px; line-height: 1.6; }
.svc__tags { display: flex; flex-direction: column; gap: 9px; padding-top: 4px; }
.svc__tags li { font-size: 14px; color: var(--text-dim); display: flex; gap: 10px; align-items: baseline; }
.svc__tags li::before { content: ""; width: 6px; height: 6px; border-radius: 2px; background: var(--grad); flex: none; transform: translateY(2px); }
.svc__arrow { align-self: center; color: var(--text-faint); transition: transform .3s var(--ease), color .3s; }
.svc:hover .svc__arrow { color: var(--teal); transform: translate(4px, -4px); }

/* ---------- Cards / feature grid ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(26px, 3vw, 36px);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 26px 50px -30px rgba(12,31,30,.4); border-color: var(--line-strong); }
.card__ic {
  width: 50px; height: 50px; border-radius: 13px;
  display: grid; place-items: center;
  background: var(--grad-soft);
  color: var(--teal);
  margin-bottom: 20px;
}
.card__ic svg { width: 24px; height: 24px; }
.card h3 { margin-bottom: 10px; font-size: 1.22rem; }
.card p { color: var(--text-dim); font-size: 15px; }

/* ---------- Stats ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(20px, 3vw, 40px); }
.stat__num { font-family: var(--f-display); font-weight: 700; font-size: clamp(2.4rem, 4.4vw, 3.6rem); letter-spacing: -0.03em; line-height: 1; }
.on-dark .stat__num { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat__label { font-family: var(--f-mono); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--invert-dim); margin-top: 14px; }
.on-dark.section, .section.on-dark { }

/* ---------- Dark section shell ---------- */
.dark {
  background: var(--ink);
  color: var(--invert);
}
.dark .h2, .dark h3 { color: var(--invert); }
.dark .lead, .dark p { color: var(--invert-dim); }

/* ---------- Approach steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2px; background: var(--line-invert); border: 1px solid var(--line-invert); border-radius: var(--radius-lg); overflow: hidden; }
.step { background: var(--ink); padding: clamp(24px, 3vw, 34px); }
.step__no { font-family: var(--f-mono); font-size: 13px; color: var(--mint); margin-bottom: 40px; }
.step h3 { font-size: 1.15rem; margin-bottom: 8px; color: var(--invert); }
.step p { font-size: 14.5px; color: var(--invert-dim); }

/* ---------- Split / about ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 72px); align-items: center; }
.prose p { margin-bottom: 1.2em; color: var(--text-dim); }
.prose p:last-child { margin-bottom: 0; }
.dark .prose p { color: var(--invert-dim); }

.values { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.value { padding: 26px; border: 1px solid var(--line-invert); border-radius: var(--radius); }
.value h4 { font-size: 1.05rem; color: var(--invert); margin-bottom: 8px; }
.value p { font-size: 14px; color: var(--invert-dim); }

/* ---------- CTA band ---------- */
.cta {
  background: var(--grad);
  border-radius: var(--radius-lg);
  padding: clamp(40px, 6vw, 76px);
  color: #04211E;
  position: relative;
  overflow: hidden;
}
.cta::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(4,33,30,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(4,33,30,.06) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(90% 120% at 90% 10%, #000, transparent 70%);
}
.cta > * { position: relative; z-index: 2; }
.cta h2 { color: #04211E; max-width: 18ch; margin-bottom: 18px; }
.cta p { color: rgba(4,33,30,.78); max-width: 48ch; margin-bottom: 30px; }
.cta .btn--dark { background: var(--ink); color: var(--invert); }
.cta .btn--dark:hover { transform: translateY(-2px); box-shadow: 0 16px 30px -14px rgba(4,33,30,.6); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(32px, 5vw, 64px); align-items: start; }
.info-list { display: grid; gap: 4px; margin-top: 12px; }
.info {
  display: flex; gap: 18px; align-items: flex-start;
  padding: 22px 0; border-bottom: 1px solid var(--line-invert);
}
.info__ic { width: 42px; height: 42px; flex: none; border-radius: 11px; background: rgba(63,219,196,.12); color: var(--mint); display: grid; place-items: center; }
.info__ic svg { width: 20px; height: 20px; }
.info__k { font-family: var(--f-mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--invert-faint); margin-bottom: 4px; }
.info__v { color: var(--invert); font-size: 16px; font-weight: 500; }
.info__v a:hover { color: var(--mint); }

.form { background: #fff; border-radius: var(--radius-lg); padding: clamp(26px, 3.5vw, 40px); border: 1px solid var(--line); }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 8px; color: var(--text); }
.field input, .field textarea, .field select {
  width: 100%; padding: 13px 16px;
  border: 1px solid var(--line-strong); border-radius: 11px;
  background: var(--paper); font: inherit; font-size: 15px; color: var(--text);
  transition: border-color .2s, box-shadow .2s;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(21,122,114,.14); background: #fff;
}
.field--row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form .btn { width: 100%; justify-content: center; margin-top: 6px; }
.form__note { font-size: 13px; color: var(--text-faint); margin-top: 14px; text-align: center; }

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  background: var(--ink); color: var(--invert);
  padding-block: clamp(66px, 9vw, 120px) clamp(52px, 7vw, 92px);
  position: relative; overflow: hidden;
}
.page-hero__glow { position:absolute; right:-10%; top:-30%; width:50vw; height:50vw; max-width:600px; max-height:600px; background: radial-gradient(circle, rgba(63,219,196,.16), transparent 60%); pointer-events:none; }
.page-hero .wrap { position: relative; z-index: 2; }
.page-hero .eyebrow { margin-bottom: 20px; }
.page-hero h1 { max-width: 20ch; margin-bottom: 20px; }
.page-hero p { max-width: 54ch; }
.crumbs { font-family: var(--f-mono); font-size: 12px; letter-spacing: .1em; color: var(--invert-faint); margin-bottom: 26px; text-transform: uppercase; }
.crumbs a:hover { color: var(--mint); }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: var(--invert-dim); padding-block: clamp(56px, 7vw, 84px) 34px; border-top: 1px solid var(--line-invert); }
.footer__top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 48px; border-bottom: 1px solid var(--line-invert); }
.footer__brand img { height: 30px; filter: brightness(0) invert(1); opacity: .95; margin-bottom: 18px; }
.footer__brand p { font-size: 14.5px; max-width: 34ch; }
.footer__col h5 { font-family: var(--f-mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--invert-faint); margin-bottom: 18px; font-weight: 400; }
.footer__col a, .footer__col li { display: block; font-size: 15px; color: var(--invert-dim); padding: 6px 0; transition: color .2s; }
.footer__col a:hover { color: var(--mint); }
.footer__bottom { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding-top: 28px; font-size: 13px; color: var(--invert-faint); flex-wrap: wrap; }
.footer__bottom .f-mono { font-family: var(--f-mono); letter-spacing: .06em; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 940px){
  .hero__inner { grid-template-columns: 1fr; }
  .throughput { display: none; }
  .grid-3, .values { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2,1fr); }
  .stats { grid-template-columns: repeat(2,1fr); row-gap: 34px; }
  .split, .contact-grid { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .svc { grid-template-columns: 54px 1fr; }
  .svc__desc { grid-column: 2; }
  .svc__tags { grid-column: 2; }
  .svc__arrow { display: none; }
}
@media (max-width: 720px){
  .nav__links { display: none; }
  .nav__toggle { display: block; }
  .nav.is-open .nav__links {
    display: flex; flex-direction: column; align-items: stretch;
    position: absolute; top: 74px; left: 0; right: 0;
    background: var(--paper); border-bottom: 1px solid var(--line);
    padding: 16px var(--gutter) 24px; gap: 4px;
  }
  .nav.is-open .nav__links a { padding: 12px 14px; }
  .nav.is-open .nav__cta { margin: 8px 0 0; }
  .nav.is-open .nav__cta .btn { width: 100%; justify-content: center; }
  .grid-3, .grid-2, .values { grid-template-columns: 1fr; }
  .field--row { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}