/* ============================================================
   HeyGo — kırmızı / siyah / beyaz
   Renk, tip ve düzen için tek kaynak dosya
   ============================================================ */

:root {
  --ink:      #0a0a0b;   /* arka plan - neredeyse siyah */
  --ink-2:    #141416;   /* yükseltilmiş yüzey */
  --line:     #26262b;   /* ince ayraçlar */
  --red:      #e11d2a;   /* HeyGo kırmızı */
  --red-2:    #ff3b46;   /* parlak vurgular */
  --red-deep: #97121c;   /* koyu kırmızı */
  --paper:    #ffffff;
  --muted:    #9a9aa4;   /* ikincil metin */
  --muted-2:  #6a6a72;

  --display: "Anton", "Arial Narrow", "Impact", system-ui, sans-serif;
  --body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --wrap: 1120px;
  --pad: clamp(20px, 5vw, 64px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; }

.sr-only,
.skip {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}
.skip:focus {
  left: 16px; top: 16px;
  width: auto; height: auto;
  clip: auto; margin: 0;
  padding: 10px 16px;
  background: var(--red);
  color: #fff;
  border-radius: 8px;
  z-index: 999;
}

:focus-visible {
  outline: 3px solid var(--red-2);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- ambient red speed streaks ---------- */
.streaks {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.streaks span {
  position: absolute;
  height: 2px;
  width: 40vw;
  left: -45vw;
  background: linear-gradient(90deg, transparent, var(--red), transparent);
  opacity: .0;
  filter: blur(.4px);
  animation: dash 9s linear infinite;
}
.streaks span:nth-child(1) { top: 22%; animation-delay: 0s;   }
.streaks span:nth-child(2) { top: 58%; width: 55vw; animation-delay: 3s; }
.streaks span:nth-child(3) { top: 80%; width: 32vw; animation-delay: 6s; }
@keyframes dash {
  0%   { transform: translateX(0);      opacity: 0; }
  8%   { opacity: .55; }
  60%  { opacity: .35; }
  100% { transform: translateX(190vw);  opacity: 0; }
}

/* ---------- wordmark ---------- */
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-family: var(--display);
  font-size: 30px;
  letter-spacing: .5px;
  text-decoration: none;
  line-height: 1;
}
.wm-hey { color: var(--paper); }
.wm-go  { color: var(--red); }
.wm-arrow {
  width: 22px; height: 22px;
  color: var(--red);
  margin-left: 4px;
  transform: translateY(1px);
}

/* ---------- top bar ---------- */
.topbar {
  position: relative;
  z-index: 2;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 22px var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.badge {
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--red-2);
  border: 1px solid var(--red-deep);
  background: rgba(225, 29, 42, .08);
  padding: 6px 12px;
  border-radius: 100px;
}

/* ---------- main wrap ---------- */
main {
  position: relative;
  z-index: 1;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad);
}

/* ---------- hero ---------- */
.hero {
  padding: clamp(48px, 9vw, 120px) 0 clamp(36px, 5vw, 64px);
  max-width: 900px;
}
.eyebrow {
  margin: 0 0 22px;
  font-size: 13px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 34px; height: 2px;
  background: var(--red);
  vertical-align: middle;
  margin-right: 12px;
}
h1 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(52px, 11vw, 132px);
  line-height: .92;
  letter-spacing: -.5px;
  margin: 0 0 26px;
  text-transform: uppercase;
}
h1 .hl { color: var(--red); }
.lede {
  font-size: clamp(17px, 2.1vw, 21px);
  color: #d6d6dc;
  max-width: 620px;
  margin: 0 0 34px;
}

/* ---------- buttons ---------- */
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  padding: 14px 22px;
  border-radius: 12px;
  border: 1px solid transparent;
  transition: transform .15s ease, background .2s ease, border-color .2s ease;
  cursor: pointer;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--red);
  color: #fff;
  box-shadow: 0 10px 30px -12px rgba(225, 29, 42, .8);
}
.btn-primary:hover { background: var(--red-2); }
.btn-ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--red); color: #fff; }

/* ---------- signature: moving category ribbon ---------- */
.ribbon {
  position: relative;
  z-index: 1;
  margin: clamp(24px, 4vw, 48px) 0;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.ribbon-track {
  display: inline-flex;
  align-items: center;
  gap: 26px;
  white-space: nowrap;
  font-family: var(--display);
  font-size: clamp(22px, 3.4vw, 40px);
  text-transform: uppercase;
  letter-spacing: .5px;
  animation: slide 26s linear infinite;
  will-change: transform;
}
.ribbon-track span { color: var(--paper); }
.ribbon-track i { color: var(--red); font-style: normal; }
@keyframes slide {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ---------- section shared ---------- */
section[id],
.why { padding: clamp(56px, 8vw, 104px) 0; }
.section-tag {
  font-size: 13px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--red);
  margin: 0 0 14px;
  font-weight: 600;
}
h2 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(34px, 6vw, 68px);
  line-height: .98;
  letter-spacing: -.3px;
  margin: 0 0 28px;
  text-transform: uppercase;
}

/* ---------- about ---------- */
.about { border-top: 1px solid var(--line); }
.about-lead {
  font-size: clamp(18px, 2.2vw, 23px);
  color: #d6d6dc;
  max-width: 720px;
  margin: 0 0 44px;
}
.about-lead strong { color: var(--paper); }
.stats {
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
}
.stats li {
  background: var(--ink-2);
  padding: 28px 24px;
}
.stats strong {
  display: block;
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(26px, 3.6vw, 40px);
  color: var(--red);
  text-transform: uppercase;
  line-height: 1;
  margin-bottom: 8px;
}
.stats span { color: var(--muted); font-size: 15px; }

/* ---------- why / cards ---------- */
.why { border-top: 1px solid var(--line); }
.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.card {
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 30px 26px;
  transition: border-color .2s ease, transform .2s ease;
}
.card:hover { border-color: var(--red); transform: translateY(-4px); }
.card-icon {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  border-radius: 13px;
  background: rgba(225, 29, 42, .1);
  color: var(--red);
  margin-bottom: 20px;
}
.card-icon svg { width: 26px; height: 26px; }
.card h3 {
  margin: 0 0 10px;
  font-size: 21px;
  letter-spacing: .2px;
}
.card p { margin: 0; color: var(--muted); font-size: 15.5px; }

/* ---------- contact / waitlist ---------- */
.contact { border-top: 1px solid var(--line); }
.contact-lead {
  color: #d6d6dc;
  max-width: 560px;
  margin: 0 0 30px;
  font-size: 18px;
}
.waitlist {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  max-width: 560px;
}
.waitlist input {
  flex: 1 1 260px;
  padding: 15px 18px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--ink-2);
  color: var(--paper);
  font-size: 16px;
  font-family: inherit;
}
.waitlist input::placeholder { color: var(--muted-2); }
.waitlist input:focus { border-color: var(--red); outline: none; }
.form-note { min-height: 22px; margin: 14px 0 0; font-size: 14.5px; }
.form-note.ok  { color: #4ade80; }
.form-note.err { color: var(--red-2); }
.reach {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  color: var(--muted);
  font-size: 15px;
}
.reach a { color: var(--paper); text-decoration: none; border-bottom: 1px solid var(--red-deep); padding-bottom: 2px; }
.reach a:hover { border-color: var(--red); color: var(--red-2); }

/* ---------- footer ---------- */
.foot {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--line);
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 40px var(--pad) 56px;
  text-align: center;
}
.foot-mark {
  font-family: var(--display);
  font-size: 30px;
  line-height: 1;
  margin-bottom: 16px;
}
.foot-kvkk { color: var(--muted); margin: 0 0 8px; font-size: 14.5px; }
.foot-kvkk .lock { display: inline-block; vertical-align: -2px; margin-right: 6px; color: var(--red); }
.foot-copy { color: var(--muted-2); margin: 0; font-size: 13px; }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .stats { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .badge { display: none; }
  .btn { width: 100%; justify-content: center; }
  .cta-row { flex-direction: column; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .streaks span,
  .ribbon-track { animation: none; }
  .ribbon-track { transform: none; }
  .btn:hover, .card:hover { transform: none; }
}