/* ════════════════════════════════════════════════════════════
   koeseo · Dark Tech-Minimalist
   ════════════════════════════════════════════════════════════ */

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('/fonts/inter-var.woff2') format('woff2-variations');
}

@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/jetbrains-mono-400.woff2') format('woff2');
}

* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0a0a0a;
  --bg-elev: #121212;
  --bg-card: #161616;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --ink: #fafafa;
  --ink-mute: rgba(250, 250, 250, 0.62);
  --ink-faint: rgba(250, 250, 250, 0.38);
  --accent: #5eead4;
  --accent-soft: rgba(94, 234, 212, 0.12);
  --danger: #f87171;
  --success: #4ade80;
  --max: 1180px;
  --pad: clamp(1.25rem, 4vw, 2.5rem);
  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Consolas, monospace;
}

html, body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

a { color: var(--ink); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--accent); }

/* ────── Background grain + subtle gradient ────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(94, 234, 212, 0.05), transparent 50%),
    radial-gradient(ellipse 50% 80% at 80% 50%, rgba(94, 234, 212, 0.025), transparent 50%);
  pointer-events: none;
  z-index: 0;
}

main, header, footer { position: relative; z-index: 1; }

/* ────── Header / Nav ────── */
.site-header {
  border-bottom: 1px solid var(--line);
  padding: 1.25rem var(--pad);
  background: rgba(10, 10, 10, 0.72);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.nav {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.brand::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent);
}
.brand-tag {
  color: var(--ink-faint);
  font-size: 0.78rem;
  margin-left: 0.25rem;
}

.nav-links {
  display: flex;
  gap: 1.75rem;
  font-size: 0.9rem;
  color: var(--ink-mute);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}
.nav-links a:hover { color: var(--ink); }

@media (max-width: 600px) {
  .brand-tag { display: none; }
  .nav-links { gap: 1rem; font-size: 0.82rem; }
}

/* ────── Hero ────── */
.hero {
  padding: clamp(4rem, 12vw, 8rem) var(--pad) clamp(3rem, 8vw, 6rem);
  max-width: var(--max);
  margin: 0 auto;
  width: 100%;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}
.hero-eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--accent);
}

.hero h1 {
  font-size: clamp(2.5rem, 6.5vw, 4.75rem);
  line-height: 1.05;
  font-weight: 600;
  letter-spacing: -0.025em;
  margin-bottom: 1.5rem;
  max-width: 14ch;
}
.hero h1 em {
  font-style: normal;
  color: var(--ink-mute);
  font-weight: 400;
}

.hero-lede {
  font-size: clamp(1.05rem, 1.7vw, 1.25rem);
  color: var(--ink-mute);
  max-width: 56ch;
  line-height: 1.55;
  margin-bottom: 2.5rem;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.5rem;
  background: var(--accent);
  color: #052e2a;
  font-weight: 500;
  border-radius: 6px;
  font-size: 0.95rem;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.hero-cta:hover {
  color: #052e2a;
  transform: translateY(-1px);
  box-shadow: 0 8px 32px rgba(94, 234, 212, 0.28);
}
.hero-cta::after { content: '→'; }

.hero-secondary {
  margin-left: 1.25rem;
  font-size: 0.92rem;
  color: var(--ink-mute);
  font-family: var(--font-mono);
}

/* ────── What we do ────── */
.section {
  padding: clamp(3rem, 6vw, 5rem) var(--pad);
  max-width: var(--max);
  margin: 0 auto;
  width: 100%;
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 3rem;
  max-width: 20ch;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.card {
  background: var(--bg-card);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: background 0.25s ease;
}
.card:hover { background: var(--bg-elev); }

.card-num {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.card-text {
  color: var(--ink-mute);
  font-size: 0.94rem;
  line-height: 1.6;
}

/* ────── Contact section ────── */
.contact-block {
  padding: clamp(3rem, 6vw, 5rem) var(--pad);
  max-width: var(--max);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
}
@media (max-width: 760px) {
  .contact-block { grid-template-columns: 1fr; gap: 2.5rem; }
}

.contact-info dt {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-faint);
  margin-top: 1.5rem;
  margin-bottom: 0.35rem;
}
.contact-info dt:first-of-type { margin-top: 0; }

.contact-info dd {
  font-size: 1rem;
  color: var(--ink);
  line-height: 1.45;
}
.contact-info dd a {
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 1px;
}

/* ────── Form ────── */
form {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: clamp(1.5rem, 3vw, 2rem);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-faint);
}

input, textarea {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.75rem 0.85rem;
  font-family: var(--font-sans);
  font-size: 0.97rem;
  color: var(--ink);
  width: 100%;
  transition: border-color 0.2s ease, background 0.2s ease;
}
input:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(94, 234, 212, 0.04);
}
input::placeholder, textarea::placeholder { color: var(--ink-faint); }

textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.55;
}

.consent {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  font-size: 0.83rem;
  color: var(--ink-mute);
  line-height: 1.45;
}
.consent input {
  width: auto;
  margin-top: 3px;
  accent-color: var(--accent);
  flex-shrink: 0;
}

button[type="submit"] {
  background: var(--accent);
  color: #052e2a;
  border: none;
  border-radius: 6px;
  padding: 0.85rem 1.25rem;
  font-family: var(--font-sans);
  font-size: 0.97rem;
  font-weight: 500;
  cursor: pointer;
  margin-top: 0.5rem;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}
button[type="submit"]:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(94, 234, 212, 0.24);
}
button[type="submit"]:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}
button[type="submit"]::after { content: '→'; transition: transform 0.18s ease; }
button[type="submit"]:hover::after { transform: translateX(3px); }

.form-status {
  font-size: 0.88rem;
  margin-top: 0.75rem;
  padding: 0.65rem 0.85rem;
  border-radius: 6px;
  display: none;
}
.form-status.success { display: block; background: rgba(74, 222, 128, 0.1); color: var(--success); border: 1px solid rgba(74, 222, 128, 0.3); }
.form-status.error { display: block; background: rgba(248, 113, 113, 0.1); color: var(--danger); border: 1px solid rgba(248, 113, 113, 0.3); }

/* ────── Footer ────── */
.site-footer {
  margin-top: auto;
  padding: 2.5rem var(--pad);
  border-top: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.4);
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-faint);
}
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a { color: var(--ink-mute); }
.footer-links a:hover { color: var(--ink); }

/* ────── Legal pages ────── */
.legal {
  max-width: 760px;
  margin: 0 auto;
  padding: clamp(3rem, 6vw, 5rem) var(--pad);
  width: 100%;
}
.legal h1 {
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 2rem;
}
.legal h2 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 2rem 0 0.65rem;
  color: var(--ink);
}
.legal h2:first-of-type { margin-top: 0; }
.legal p, .legal address {
  color: var(--ink-mute);
  font-style: normal;
  margin-bottom: 0.85rem;
  line-height: 1.65;
}
.legal a {
  color: var(--accent);
  border-bottom: 1px solid rgba(94, 234, 212, 0.3);
}
.legal strong { color: var(--ink); font-weight: 500; }

/* ────── Skip link ────── */
.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 100;
  background: var(--accent);
  color: #052e2a;
  padding: 0.65rem 1rem;
  border-radius: 4px;
}

/* ────── Selection ────── */
::selection { background: var(--accent); color: #052e2a; }