@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400&display=swap');

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Tokens ── */
:root {
  --bg:        #0f0f0f;
  --bg-raised: #161616;
  --border:    #2a2a2a;
  --border-hi: #3a3a3a;
  --text:      #e8e6e1;
  --text-dim:  #888880;
  --accent:    #f0a500;
  --font:      'IBM Plex Mono', 'Courier New', monospace;
  --max-w:     900px;
  --gap:       clamp(1.5rem, 4vw, 3rem);
}

/* ── Base ── */
html {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

main {
  flex: 1;
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--gap);
}

/* ── Typography ── */
h1, h2, h3, h4 {
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

h1 { font-size: clamp(1.6rem, 4vw, 2.4rem); }
h2 { font-size: clamp(1.1rem, 2.5vw, 1.4rem); }
h3 { font-size: 1rem; font-weight: 600; }

p { max-width: 68ch; }

a {
  color: var(--text);
  text-decoration: none;
  position: relative;
}

/* ── Animated underline (default for inline links) ── */
p a, .prose a {
  display: inline-block;
}

p a::after, .prose a::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--border-hi);
  transform: scaleX(1);
  transform-origin: left;
  transition: background 0.25s ease, transform 0.25s ease;
}

p a:hover, .prose a:hover {
  color: var(--accent);
}

p a:hover::after, .prose a:hover::after {
  background: var(--accent);
}

/* ── Divider ── */
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--gap) 0;
}

/* ── Utility ── */
.dim    { color: var(--text-dim); }
.accent { color: var(--accent); }

.label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* ── Tag ── */
.tag {
  display: inline-block;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2em 0.5em;
  border: 1px solid var(--border-hi);
  color: var(--text-dim);
  transition: border-color 0.2s, color 0.2s;
}

/* ── Marquee ── */
.marquee {
  overflow: hidden;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 0.6rem 0;
  user-select: none;
}

.marquee-inner {
  display: inline-flex;
  white-space: nowrap;
  animation: marquee 28s linear infinite;
}

.marquee-inner:hover {
  animation-play-state: paused;
}

.marquee-item {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding-right: 2.5rem;
}

.marquee-item .sep {
  color: var(--accent);
  margin-right: 2.5rem;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ── Blinking cursor ── */
.cursor-blink {
  display: inline-block;
  width: 2px;
  height: 0.7em;
  background: var(--accent);
  vertical-align: middle;
  margin-left: 0.2em;
  position: relative;
  top: -0.05em;
  animation: blink 1.1s step-end infinite;
}

/* ── Button ── */
.btn {
  display: inline-block;
  font-family: var(--font);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.6em 1.4em;
  border: 1px solid var(--accent);
  color: var(--accent);
  text-decoration: none;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  background: transparent;
  transition: color 0.3s ease;
  z-index: 0;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: translateX(-101%);
  transition: transform 0.3s ease;
  z-index: -1;
}

.btn:hover {
  color: var(--bg);
  text-decoration: none;
}

.btn:hover::after { display: none; }

.btn:hover::before {
  transform: translateX(0);
}

.btn-dim {
  border-color: var(--border-hi);
  color: var(--text-dim);
}

.btn-dim::before { background: var(--border-hi); }
.btn-dim:hover { color: var(--bg); }

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* ── Page fade-in ── */
.fade-up {
  animation: fadeUp 0.5s ease both;
}

.fade-up-delay-1 { animation: fadeUp 0.5s 0.1s ease both; }
.fade-up-delay-2 { animation: fadeUp 0.5s 0.2s ease both; }
.fade-up-delay-3 { animation: fadeUp 0.5s 0.35s ease both; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Light theme ── */
html[data-theme="light"] {
  --bg:        #f2f0ea;
  --bg-raised: #e8e6df;
  --border:    #d4d2cb;
  --border-hi: #b8b6af;
  --text:      #1c1c1a;
  --text-dim:  #68675f;
  --accent:    #b07600;
}

html[data-theme="light"] body::before {
  opacity: 0.04;
  filter: invert(1);
}

/* ── Grain overlay ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
  background-size: 200px 200px;
  opacity: 0.025;
  pointer-events: none;
  z-index: 9999;
}