*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

:root {
  --bg:       #0c0c0e;
  --bg2:      #111114;
  --surface:  #16161a;
  --border:   #222228;
  --border2:  #2e2e38;
  --text-1:   #f0ede6;
  --text-2:   #8a8a96;
  --text-3:   #52525e;
  --accent:   #c9933a;
  --serif:    'EB Garamond', Georgia, serif;
  --mono:     'IBM Plex Mono', monospace;
}

body {
  background: var(--bg);
  color: var(--text-1);
  font-family: var(--serif);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Nav */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.25rem 3rem;
  transition: border-color 300ms, background 300ms;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  border-color: var(--border);
  background: rgba(12,12,14,.92);
  backdrop-filter: blur(12px);
}
.nav-wordmark {
  font-family: var(--mono); font-size: .85rem; font-weight: 500;
  letter-spacing: .25em; color: var(--accent);
}
.nav-links { display: flex; gap: 2.5rem; }
.nav-links a {
  font-family: var(--mono); font-size: .65rem; letter-spacing: .2em;
  text-transform: uppercase; color: var(--text-3); text-decoration: none;
  transition: color 200ms;
}
.nav-links a:hover { color: var(--text-1); }

/* Hero */
.hero {
  position: relative; min-height: 100dvh;
  display: flex; flex-direction: column; justify-content: center;
  padding: 8rem 3rem 5rem; overflow: hidden;
}
.hero-number {
  position: absolute; right: -.05em; top: 50%; transform: translateY(-50%);
  font-family: var(--serif);
  font-size: clamp(18rem, 28vw, 32rem);
  font-weight: 600; line-height: .85;
  color: transparent; -webkit-text-stroke: 1px var(--border);
  user-select: none; pointer-events: none; letter-spacing: -.04em;
}
.hero-content { position: relative; max-width: 780px; animation: fadein 800ms ease both; }
.hero-title {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 5.5vw, 4.5rem);
  font-weight: 400; line-height: 1.1; letter-spacing: -.01em;
  margin-bottom: 2rem;
}
.hero-title em { font-style: italic; color: var(--accent); }
.hero-sub {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: var(--text-2); line-height: 1.7; max-width: 520px;
  animation: fadein 800ms 150ms ease both;
}
.hero-scroll {
  position: absolute; bottom: 3rem; left: 3rem;
  display: flex; flex-direction: column; align-items: center; gap: .5rem;
  animation: fadein 1s 400ms ease both;
}
.scroll-line { width: 1px; height: 48px; background: var(--border2); display: block; }
.scroll-label {
  font-family: var(--mono); font-size: .55rem; letter-spacing: .25em;
  text-transform: uppercase; color: var(--text-3); writing-mode: vertical-rl;
}

/* Sections */
.section {
  max-width: 1100px; margin: 0 auto; padding: 7rem 3rem;
  border-top: 1px solid var(--border);
}
.section-label {
  font-family: var(--mono); font-size: .6rem; letter-spacing: .25em;
  text-transform: uppercase; color: var(--text-3); margin-bottom: 2.5rem;
}
.section-title {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 400; line-height: 1.15; letter-spacing: -.01em; margin-bottom: 2.5rem;
}
.section-intro {
  font-size: 1.05rem; color: var(--text-2); max-width: 560px;
  margin-bottom: 3rem; line-height: 1.75;
}

/* Concepts grid */
.concepts {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 1px; background: var(--border); border: 1px solid var(--border);
}
.concept {
  background: var(--bg); padding: 2.5rem;
  transition: background 200ms;
}
.concept:hover { background: var(--surface); }
.concept-n {
  font-family: var(--mono); font-size: .6rem; letter-spacing: .2em;
  color: var(--text-3); margin-bottom: 1.25rem;
}
.concept h3 {
  font-family: var(--serif); font-size: 1.2rem; font-weight: 500;
  margin-bottom: .75rem;
}
.concept p { font-size: .95rem; color: var(--text-2); line-height: 1.7; }

/* Search */
.search-shell {
  border: 1px solid var(--border); padding: 2.5rem;
  background: var(--surface);
}
.search-row { display: flex; gap: 0; }
input[type="text"] {
  flex: 1; background: var(--bg); border: 1px solid var(--border2);
  border-right: none; color: var(--text-1);
  font-family: var(--serif); font-size: 1rem; padding: .9rem 1.25rem;
  outline: none; transition: border-color 200ms;
}
input[type="text"]:focus { border-color: var(--accent); }
input[type="text"]::placeholder { color: var(--text-3); }
#search-btn {
  background: var(--accent); color: #0c0c0e; border: none;
  padding: .9rem 1.75rem; font-family: var(--mono); font-size: .7rem;
  font-weight: 500; letter-spacing: .15em; text-transform: uppercase;
  cursor: pointer; transition: opacity 200ms; white-space: nowrap;
}
#search-btn:hover { opacity: .88; }

.search-results { margin-top: 1.5rem; }
.search-state {
  font-family: var(--mono); font-size: .7rem; letter-spacing: .1em;
  color: var(--text-2); padding: .5rem 0;
}
.search-state.muted { color: var(--text-3); }

.result-row {
  padding: 1.25rem 0; border-bottom: 1px solid var(--border);
  display: grid; grid-template-columns: 1fr 1fr; gap: .5rem .75rem;
}
.result-row:last-child { border-bottom: none; }
.result-domain {
  font-family: var(--serif); font-size: 1.05rem; color: var(--text-1);
}
.result-host {
  font-family: var(--mono); font-size: .65rem; color: var(--text-3);
  text-align: right; align-self: center;
}
.result-meta {
  font-size: .9rem; color: var(--text-2); grid-column: 1 / -1; line-height: 1.6;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border); padding: 2.5rem 3rem;
  display: flex; align-items: center; gap: 1.5rem;
}
.footer-wordmark { font-family: var(--mono); font-size: .75rem; letter-spacing: .25em; color: var(--accent); }
.footer-rule { flex: 1; height: 1px; background: var(--border); }
.footer-theory {
  font-family: var(--mono); font-size: .6rem; letter-spacing: .15em;
  text-transform: uppercase; color: var(--text-3); text-decoration: none;
  transition: color 200ms;
}
.footer-theory:hover { color: var(--text-1); }
.footer-copy { font-family: var(--mono); font-size: .6rem; letter-spacing: .15em; color: var(--text-3); }

/* Animations */
@keyframes fadein {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 700px) {
  .nav { padding: 1rem 1.5rem; }
  .nav-links { gap: 1.5rem; }
  .hero { padding: 7rem 1.5rem 4rem; }
  .hero-number { font-size: 45vw; }
  .section { padding: 4rem 1.5rem; }
  .concepts { grid-template-columns: 1fr; }
  .search-shell { padding: 1.5rem; }
  .footer { padding: 2rem 1.5rem; flex-wrap: wrap; }
}