/* ===== Tokens ===== */
:root {
  --ink: #0B1320;
  --paper: #F5F3ED;
  --pine: #3D6E5C;
  --terracotta: #C97B4A;
  --mute: #8A8F98;
  --paper-dim: #EAE7DD;

  --display: 'Fraunces', serif;
  --body: 'Inter', sans-serif;
  --mono: 'JetBrains Mono', monospace;

  --rail-width: 220px;
  --max-w: 920px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

/* ===== Build log rail (signature element) ===== */
.build-log {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--rail-width);
  height: 100vh;
  padding: 64px 28px;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--paper-dim);
}

.build-log__line {
  display: none;
}

.build-log__entries {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.build-log__entries li {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  color: var(--mute);
  cursor: pointer;
  display: flex;
  align-items: baseline;
  gap: 10px;
  transition: color 0.2s ease;
  border-left: 2px solid var(--paper-dim);
  padding-left: 12px;
}

.build-log__entries li:hover,
.build-log__entries li.is-active {
  color: var(--ink);
  border-left-color: var(--pine);
}

.build-log__ts {
  color: var(--terracotta);
  font-weight: 500;
}

/* ===== Mobile topbar / nav (hidden on desktop) ===== */
.topbar { display: none; }
.mobile-nav { display: none; }

/* ===== Main layout ===== */
main {
  margin-left: var(--rail-width);
}

section.block, .hero, .site-footer {
  padding: 0 56px;
}

/* ===== Hero ===== */
.hero {
  min-height: 92vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: var(--max-w);
}

.hero__eyebrow {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--pine);
  letter-spacing: 0.04em;
  margin-bottom: 28px;
}

.hero__title {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  line-height: 1.05;
  margin: 0 0 28px 0;
  letter-spacing: -0.01em;
}

.hero__title-sub {
  font-weight: 400;
  font-style: italic;
  color: var(--pine);
  font-size: 0.62em;
}

.hero__lede {
  max-width: 640px;
  font-size: 1.12rem;
  color: #2A3340;
  margin-bottom: 36px;
}

.hero__meta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero__meta span {
  font-family: var(--mono);
  font-size: 0.74rem;
  border: 1px solid var(--ink);
  border-radius: 100px;
  padding: 6px 14px;
  color: var(--ink);
}

/* ===== Block sections ===== */
.block {
  padding-top: 110px;
  padding-bottom: 110px;
  max-width: var(--max-w);
  border-top: 1px solid var(--paper-dim);
}

.block--alt {
  background: var(--paper-dim);
  max-width: 100%;
}

.block--alt > * {
  max-width: var(--max-w);
}

.block--contact {
  border-bottom: none;
}

.block__label {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--terracotta);
  letter-spacing: 0.03em;
  margin-bottom: 16px;
}

.block__title {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  margin: 0 0 24px 0;
  line-height: 1.15;
}

.block__intro {
  font-size: 1.05rem;
  color: #2A3340;
  max-width: 640px;
  margin-bottom: 40px;
}

.prose {
  font-size: 1rem;
  color: #2A3340;
}

.prose p { margin: 0 0 14px 0; }

.prose__subhead {
  font-family: var(--mono);
  font-size: 0.84rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--pine);
  margin: 32px 0 12px 0;
}

/* ===== Artifact two-col layout ===== */
.artifact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-bottom: 36px;
}

.artifact__col h3 {
  font-family: var(--mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--mute);
  margin: 0 0 12px 0;
}

.artifact-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 0.85rem;
}

.artifact-links a, .contact-links a {
  border-bottom: 1px solid var(--ink);
  padding-bottom: 2px;
  text-decoration: none;
}

.artifact-links a:hover, .contact-links a:hover {
  color: var(--pine);
  border-bottom-color: var(--pine);
}

/* ===== Placeholder styling — visually distinct so it's obvious what's pending ===== */
.placeholder-content {
  border: 1.5px dashed var(--terracotta);
  border-radius: 10px;
  padding: 28px;
  background: rgba(201, 123, 74, 0.05);
}

.placeholder-note {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--terracotta);
  margin: 0 0 12px 0;
}

.placeholder-link {
  opacity: 0.55;
}

.placeholder-link::after {
  content: " (placeholder)";
  font-size: 0.78em;
  color: var(--mute);
}

/* ===== Video frame ===== */
.video-frame__inner {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.btn {
  font-family: var(--mono);
  font-size: 0.85rem;
  padding: 10px 20px;
  border-radius: 8px;
  display: inline-block;
  width: fit-content;
  text-decoration: none;
}

.btn--ghost {
  border: 1.5px solid var(--ink);
}

.btn--ghost:hover {
  background: var(--ink);
  color: var(--paper);
}

/* ===== Contact ===== */
.contact-links {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 0.95rem;
}

/* ===== Footer ===== */
.site-footer {
  padding-top: 36px;
  padding-bottom: 48px;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--mute);
  max-width: var(--max-w);
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .build-log__entries li { transition: none; }
}

/* ===== Responsive ===== */
@media (max-width: 880px) {
  .artifact {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

@media (max-width: 760px) {
  .build-log { display: none; }

  main { margin-left: 0; }

  .topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 24px;
    position: sticky;
    top: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--paper-dim);
    z-index: 50;
  }

  .topbar__name {
    font-family: var(--display);
    font-weight: 600;
    font-size: 1.1rem;
  }

  .topbar__toggle {
    background: none;
    border: none;
    width: 28px;
    height: 22px;
    position: relative;
    cursor: pointer;
    padding: 0;
  }

  .topbar__toggle span {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--ink);
    transition: transform 0.2s ease, opacity 0.2s ease;
  }

  .topbar__toggle span:nth-child(1) { top: 2px; }
  .topbar__toggle span:nth-child(2) { top: 10px; }
  .topbar__toggle span:nth-child(3) { top: 18px; }

  .topbar__toggle.is-open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .topbar__toggle.is-open span:nth-child(2) { opacity: 0; }
  .topbar__toggle.is-open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

  .mobile-nav {
    display: flex;
    flex-direction: column;
    max-height: 0;
    overflow: hidden;
    background: var(--paper);
    border-bottom: 1px solid var(--paper-dim);
    transition: max-height 0.25s ease;
  }

  .mobile-nav.is-open {
    max-height: 400px;
  }

  .mobile-nav a {
    padding: 14px 24px;
    font-family: var(--mono);
    font-size: 0.85rem;
    text-decoration: none;
    border-top: 1px solid var(--paper-dim);
  }

  section.block, .hero, .site-footer {
    padding: 0 24px;
  }

  .hero { min-height: 70vh; padding-top: 60px; }

  .block { padding-top: 64px; padding-bottom: 64px; }
}