/* ============================================================
   HyperMaru — Marketing site base
   Built on KRDS tokens, retuned for a dark developer-tool aesthetic
   ============================================================ */

/* Pretendard (locally hosted) */
@font-face { font-family: "Pretendard"; font-weight: 400; font-style: normal; font-display: swap;
  src: url("../fonts/Pretendard-Regular.woff2") format("woff2"); }
@font-face { font-family: "Pretendard"; font-weight: 500; font-style: normal; font-display: swap;
  src: url("../fonts/Pretendard-Medium.woff2") format("woff2"); }
@font-face { font-family: "Pretendard"; font-weight: 600; font-style: normal; font-display: swap;
  src: url("../fonts/Pretendard-SemiBold.woff2") format("woff2"); }
@font-face { font-family: "Pretendard"; font-weight: 700; font-style: normal; font-display: swap;
  src: url("../fonts/Pretendard-Bold.woff2") format("woff2"); }
@font-face { font-family: "Pretendard"; font-weight: 800; font-style: normal; font-display: swap;
  src: url("../fonts/Pretendard-ExtraBold.woff2") format("woff2"); }

:root {
  /* KRDS brand kept intact */
  --blue-10: #ecf2fe;
  --blue-20: #d8e5fd;
  --blue-30: #b1cefb;
  --blue-40: #5b8def;
  --blue-50: #256ef4;  /* KRDS Blue */
  --blue-60: #0b50d0;
  --blue-70: #083891;

  --green-30: #7fc99c;
  --green-50: #168e3b;
  --red-50:   #e0192d;
  --yellow-50:#ffae00;

  /* Dark theme surface scale — neutral with a faint blue undertone */
  --bg-0: #08090c;        /* page edges, deepest */
  --bg-1: #0b0d12;        /* page canvas */
  --bg-2: #11141a;        /* primary surface */
  --bg-3: #181d25;        /* raised surface (cards) */
  --bg-4: #1f252e;        /* hovered surface */
  --bg-5: #262d37;        /* selected / press */

  --line-1: #1c212a;      /* hairline */
  --line-2: #262d37;      /* default border */
  --line-3: #353d49;      /* strong border */

  --fg-1: #f3f5f8;        /* primary text */
  --fg-2: #c9cfd7;        /* body text */
  --fg-3: #98a2af;        /* muted */
  --fg-4: #6b7480;        /* subtle / caption */
  --fg-5: #4b5563;        /* disabled */

  --brand: #256ef4;
  --brand-hover: #4d8bf6;
  --brand-press: #1a5ad1;
  --brand-soft: rgba(37, 110, 244, 0.12);
  --brand-ring: rgba(37, 110, 244, 0.38);
  --brand-glow: rgba(37, 110, 244, 0.45);

  /* Terminal accent (used very sparingly — only for status dots & demo) */
  --term-green: #5cf28c;
  --term-amber: #ffbb4d;
  --term-red:   #ff5b62;

  /* Type */
  --font-sans: "Pretendard GOV", "Pretendard", -apple-system, BlinkMacSystemFont,
               "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --fw-regular:  400;
  --fw-medium:   500;
  --fw-semibold: 600;
  --fw-bold:     700;
  --fw-xbold:    800;

  /* Scale — slightly tightened for marketing site */
  --display-xl-size: 88px; --display-xl-line: 96px; --display-xl-tracking: -0.045em;
  --display-l-size: 64px;  --display-l-line: 72px;  --display-l-tracking: -0.04em;
  --display-m-size: 48px;  --display-m-line: 56px;  --display-m-tracking: -0.035em;
  --display-s-size: 36px;  --display-s-line: 44px;  --display-s-tracking: -0.03em;
  --heading-xl-size: 32px; --heading-xl-line: 40px; --heading-xl-tracking: -0.025em;
  --heading-l-size: 24px;  --heading-l-line: 32px;  --heading-l-tracking: -0.02em;
  --heading-m-size: 20px;  --heading-m-line: 28px;  --heading-m-tracking: -0.015em;
  --heading-s-size: 17px;  --heading-s-line: 24px;  --heading-s-tracking: -0.01em;
  --body-l-size: 19px;  --body-l-line: 30px;
  --body-m-size: 16px;  --body-m-line: 26px;
  --body-s-size: 14px;  --body-s-line: 22px;
  --body-xs-size: 12px; --body-xs-line: 18px;

  /* Spacing — 4px baseline */
  --s-1: 4px;  --s-2: 8px;  --s-3: 12px;  --s-4: 16px;
  --s-5: 20px; --s-6: 24px; --s-7: 32px;  --s-8: 40px;
  --s-9: 48px; --s-10: 64px; --s-11: 80px; --s-12: 96px;
  --s-13: 128px; --s-14: 160px;

  /* Radius */
  --r-xs: 4px; --r-s: 6px; --r-m: 8px; --r-l: 12px; --r-xl: 16px; --r-2xl: 24px;
  --r-pill: 9999px;

  /* Shadow — dark mode needs slightly stronger drops */
  --shadow-1: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-2: 0 4px 12px rgba(0,0,0,0.35), 0 0 1px rgba(0,0,0,0.4);
  --shadow-3: 0 12px 36px rgba(0,0,0,0.5), 0 2px 6px rgba(0,0,0,0.4);
  --shadow-4: 0 32px 80px rgba(0,0,0,0.6), 0 8px 16px rgba(0,0,0,0.45);
  --focus-ring: 0 0 0 3px var(--brand-ring);

  /* Motion */
  --ease-std: cubic-bezier(0.2, 0, 0, 1);
  --ease-emph: cubic-bezier(0.3, 0, 0, 1);
  --dur-fast: 120ms;
  --dur-base: 200ms;
  --dur-slow: 320ms;

  /* Layout */
  --container: 1240px;
  --container-pad: 32px;
}

@media (max-width: 768px) {
  :root {
    --display-xl-size: 48px; --display-xl-line: 56px;
    --display-l-size: 40px;  --display-l-line: 48px;
    --display-m-size: 32px;  --display-m-line: 40px;
    --display-s-size: 26px;  --display-s-line: 34px;
    --heading-xl-size: 24px; --heading-xl-line: 32px;
    --heading-l-size: 20px;  --heading-l-line: 28px;
    --body-l-size: 17px; --body-l-line: 28px;
    --container-pad: 20px;
  }
}

* { box-sizing: border-box; }

html {
  font-family: var(--font-sans);
  color: var(--fg-2);
  background: var(--bg-1);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-size: var(--body-m-size);
  line-height: var(--body-m-line);
  min-height: 100vh;
  overflow-x: hidden;
}

h1, h2, h3, h4 { color: var(--fg-1); margin: 0; font-weight: var(--fw-bold); letter-spacing: -0.02em; }
h1 { font-size: var(--display-l-size); line-height: var(--display-l-line); letter-spacing: var(--display-l-tracking); font-weight: var(--fw-xbold); }
h2 { font-size: var(--display-s-size); line-height: var(--display-s-line); letter-spacing: var(--display-s-tracking); }
h3 { font-size: var(--heading-l-size); line-height: var(--heading-l-line); letter-spacing: var(--heading-l-tracking); }
h4 { font-size: var(--heading-m-size); line-height: var(--heading-m-line); letter-spacing: var(--heading-m-tracking); }
p { margin: 0; color: var(--fg-2); }

a { color: inherit; text-decoration: none; }
a.link { color: var(--fg-2); text-decoration: underline; text-decoration-color: var(--line-3); text-underline-offset: 4px; }
a.link:hover { color: var(--fg-1); text-decoration-color: var(--brand); }

code, pre, kbd { font-family: var(--font-mono); }
::selection { background: var(--brand-soft); color: var(--fg-1); }

*:focus-visible { outline: none; box-shadow: var(--focus-ring); border-radius: var(--r-s); }

/* ============================================================
   Layout primitives
   ============================================================ */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}
.section { padding: var(--s-12) 0; }
.section-tight { padding: var(--s-10) 0; }
.section-deep { padding: var(--s-13) 0 var(--s-12); }
@media (max-width: 768px) {
  .section { padding: var(--s-10) 0; }
  .section-deep { padding: var(--s-11) 0; }
}

.stack-1 { display: flex; flex-direction: column; gap: var(--s-1); }
.stack-2 { display: flex; flex-direction: column; gap: var(--s-2); }
.stack-3 { display: flex; flex-direction: column; gap: var(--s-3); }
.stack-4 { display: flex; flex-direction: column; gap: var(--s-4); }
.stack-5 { display: flex; flex-direction: column; gap: var(--s-5); }
.stack-6 { display: flex; flex-direction: column; gap: var(--s-6); }
.stack-7 { display: flex; flex-direction: column; gap: var(--s-7); }
.stack-8 { display: flex; flex-direction: column; gap: var(--s-8); }

.row { display: flex; align-items: center; gap: var(--s-4); }
.row-tight { display: flex; align-items: center; gap: var(--s-2); }

.eyebrow {
  display: inline-flex; align-items: center; gap: var(--s-2);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand);
  font-weight: var(--fw-medium);
}
.eyebrow::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 8px var(--brand-glow);
}

.fg-1 { color: var(--fg-1); }
.fg-2 { color: var(--fg-2); }
.fg-3 { color: var(--fg-3); }
.fg-4 { color: var(--fg-4); }

.mono { font-family: var(--font-mono); }

/* ============================================================
   Button
   ============================================================ */
.btn {
  --bg: transparent;
  --fg: var(--fg-1);
  --bd: var(--line-3);
  display: inline-flex; align-items: center; gap: var(--s-2);
  height: 44px; padding: 0 18px;
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--bd);
  border-radius: var(--r-m);
  font: inherit;
  font-weight: var(--fw-medium);
  font-size: 15px;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-std),
              border-color var(--dur-fast) var(--ease-std),
              color var(--dur-fast) var(--ease-std),
              transform var(--dur-fast) var(--ease-std);
  white-space: nowrap;
}
.btn:hover { background: var(--bg-4); border-color: var(--line-3); }
.btn:active { transform: translateY(1px); }
.btn .icon { width: 18px; height: 18px; flex: none; }

.btn-primary { --bg: var(--brand); --fg: #fff; --bd: var(--brand); }
.btn-primary:hover { --bg: var(--brand-hover); --bd: var(--brand-hover); box-shadow: 0 8px 24px var(--brand-glow); }
.btn-primary:active { --bg: var(--brand-press); }

.btn-ghost { --bg: transparent; --fg: var(--fg-1); --bd: transparent; }
.btn-ghost:hover { --bg: var(--bg-3); }

.btn-outline { --bg: transparent; --fg: var(--fg-1); --bd: var(--line-3); }
.btn-outline:hover { --bg: var(--bg-3); --bd: var(--line-3); }

.btn-sm { height: 36px; padding: 0 14px; font-size: 14px; border-radius: var(--r-s); }
.btn-lg { height: 52px; padding: 0 22px; font-size: 16px; border-radius: var(--r-m); }

/* ============================================================
   Site nav
   ============================================================ */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 13, 18, 0.72);
  backdrop-filter: saturate(140%) blur(16px);
  -webkit-backdrop-filter: saturate(140%) blur(16px);
  border-bottom: 1px solid var(--line-1);
}
.site-nav__inner {
  height: 64px;
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--s-6);
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--fg-1);
  font-weight: var(--fw-bold);
  font-size: 17px;
  letter-spacing: -0.01em;
}
.brand__mark {
  width: 30px; height: 30px;
  border-radius: 7px;
  object-fit: cover;
  display: block;
  flex: none;
  box-shadow: 0 0 18px rgba(96, 132, 255, 0.32);
}
.brand__ver {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-4);
  font-weight: var(--fw-medium);
  padding: 2px 6px;
  border: 1px solid var(--line-2);
  border-radius: var(--r-xs);
  margin-left: 4px;
}
.site-nav__links {
  display: flex; gap: 4px; align-items: center;
}
.site-nav__links a {
  padding: 8px 14px;
  font-size: 14px;
  font-weight: var(--fw-medium);
  color: var(--fg-3);
  border-radius: var(--r-s);
  transition: color var(--dur-fast), background var(--dur-fast);
}
.site-nav__links a:hover { color: var(--fg-1); background: var(--bg-3); }
.site-nav__links a.is-active { color: var(--fg-1); background: var(--bg-3); }
.site-nav__right { display: flex; align-items: center; gap: var(--s-3); }
@media (max-width: 768px) {
  .site-nav__links { display: none; }
}

/* ============================================================
   Footer
   ============================================================ */
.site-foot {
  border-top: 1px solid var(--line-1);
  background: var(--bg-0);
  padding: var(--s-11) 0 var(--s-7);
  margin-top: var(--s-12);
}
.site-foot__grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: var(--s-8);
}
@media (max-width: 768px) {
  .site-foot__grid { grid-template-columns: 1fr 1fr; gap: var(--s-7); }
}
.site-foot h5 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-4);
  font-weight: var(--fw-semibold);
  font-family: var(--font-mono);
  margin: 0 0 var(--s-4);
}
.site-foot ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.site-foot a { color: var(--fg-3); font-size: 14px; }
.site-foot a:hover { color: var(--fg-1); }
.site-foot__bottom {
  margin-top: var(--s-10);
  padding-top: var(--s-6);
  border-top: 1px solid var(--line-1);
  display: flex; align-items: center; justify-content: space-between;
  font-size: 13px; color: var(--fg-4);
  gap: var(--s-4);
}
.site-foot__bottom .mono { font-family: var(--font-mono); }
.site-foot__sponsor {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); color: var(--fg-3); font-size: 13px;
}
.site-foot__sponsor strong { color: var(--fg-1); font-weight: var(--fw-semibold); }

/* ============================================================
   Cards / panels (generic)
   ============================================================ */
.card {
  background: var(--bg-2);
  border: 1px solid var(--line-1);
  border-radius: var(--r-xl);
  padding: var(--s-7);
}

/* ============================================================
   Window mock (used in hero + features)
   ============================================================ */
.win {
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: var(--r-l);
  overflow: hidden;
  box-shadow: var(--shadow-4);
}
.win__chrome {
  display: flex; align-items: center; gap: var(--s-3);
  padding: 10px 14px;
  background: linear-gradient(180deg, #15191f 0%, #11141a 100%);
  border-bottom: 1px solid var(--line-1);
  height: 38px;
}
.win__lights { display: flex; gap: 7px; }
.win__lights span {
  width: 12px; height: 12px; border-radius: 50%;
  display: inline-block;
  box-shadow: inset 0 0 0 0.5px rgba(0,0,0,0.4);
}
.win__lights span:nth-child(1) { background: #ff5f57; }
.win__lights span:nth-child(2) { background: #febc2e; }
.win__lights span:nth-child(3) { background: #28c840; }
.win__title {
  flex: 1; text-align: center;
  font-size: 13px;
  color: var(--fg-3);
  font-weight: var(--fw-medium);
}
.win__body { background: var(--bg-2); }

/* badges / pills */
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  height: 22px; padding: 0 8px;
  border-radius: var(--r-pill);
  font-size: 11px;
  font-family: var(--font-mono);
  font-weight: var(--fw-medium);
  background: var(--bg-3);
  color: var(--fg-3);
  border: 1px solid var(--line-2);
}
.pill--brand { background: var(--brand-soft); border-color: rgba(37,110,244,0.3); color: #8eb4fa; }
.pill--green { background: rgba(127,201,156,0.10); border-color: rgba(127,201,156,0.35); color: var(--green-30); }
.pill--amber { background: rgba(255,174,0,0.10); border-color: rgba(255,174,0,0.35); color: var(--yellow-50); }
.pill--purple { background: rgba(167,124,255,0.10); border-color: rgba(167,124,255,0.35); color: #c9b6ff; }

/* status dot */
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot--green { background: var(--term-green); box-shadow: 0 0 8px rgba(92, 242, 140, 0.5); }
.dot--gray { background: var(--fg-4); }

/* divider */
.divider { height: 1px; background: var(--line-1); width: 100%; }

/* utility */
.center { text-align: center; }
.muted { color: var(--fg-3); }
.subtle { color: var(--fg-4); }
.tight { letter-spacing: -0.02em; }
.no-wrap { white-space: nowrap; }

/* bg ambient glow under hero */
.glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
.glow::before {
  content: "";
  position: absolute;
  top: -200px; left: 50%; transform: translateX(-50%);
  width: 1000px; height: 700px;
  background: radial-gradient(ellipse at center, rgba(37,110,244,0.22) 0%, rgba(37,110,244,0.06) 35%, transparent 65%);
  filter: blur(20px);
}
.glow::after {
  content: "";
  position: absolute;
  top: 200px; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-2) 30%, var(--line-3) 50%, var(--line-2) 70%, transparent);
  opacity: 0.6;
}
.dot-grid {
  position: absolute; inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,0.04) 1px, transparent 0);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse at top, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at top, black 30%, transparent 75%);
  pointer-events: none;
  z-index: 0;
}

.relative { position: relative; }
.z1 { position: relative; z-index: 1; }