/* ===== Tokens ===== */
:root {
  --paper: #EEF1EE;
  --paper-raised: #F7F9F6;
  --ink: #17232B;
  --slate: #5B6B70;
  --copper: #A15C34;
  --copper-dark: #7E4527;
  --ledger-green: #3E6353;
  --line: #C7CDC6;
  --line-strong: #9DA89F;

  --font-display: 'Fraunces', serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --wrap: 1160px;
}

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 28px;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 3px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(238, 241, 238, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  padding-bottom: 18px;
}

.wordmark-main {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.main-nav {
  display: flex;
  gap: 32px;
}

.main-nav a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--slate);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.main-nav a:hover {
  color: var(--copper);
  border-color: var(--copper);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 34px;
  height: 34px;
  background: none;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  margin: 0 6px;
  background: var(--ink);
}

/* ===== Hero ===== */
.hero {
  padding: 76px 0 88px;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr;
  gap: 56px;
  align-items: center;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--copper-dark);
  margin: 0 0 18px;
}

.hero-copy h1 {
  font-size: clamp(2rem, 3.6vw, 3rem);
  line-height: 1.12;
  margin-bottom: 22px;
}

.hero-sub {
  font-size: 1.08rem;
  color: var(--slate);
  max-width: 46ch;
  margin: 0 0 34px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 13px 26px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 3px;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background: var(--copper);
  color: #fff;
}
.btn-primary:hover {
  background: var(--copper-dark);
  transform: translateY(-1px);
}

.btn-ghost {
  border-color: var(--line-strong);
  color: var(--ink);
}
.btn-ghost:hover {
  border-color: var(--copper);
  color: var(--copper-dark);
}

.hero-panel { display: flex; justify-content: center; }

.stamp-card {
  background: var(--ink);
  color: var(--paper-raised);
  border-radius: 6px;
  padding: 32px;
  width: 100%;
  max-width: 320px;
  box-shadow: 0 18px 40px -18px rgba(23, 35, 43, 0.45);
}

.stamp-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(238, 241, 238, 0.15);
}
.stamp-row:last-child { border-bottom: none; padding-bottom: 0; }
.stamp-row:first-child { padding-top: 0; }

.stamp-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(238, 241, 238, 0.55);
}
.stamp-value {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: #fff;
}

/* ===== Section shared ===== */
section { padding: 88px 0; border-bottom: 1px solid var(--line); }
section:last-of-type { border-bottom: none; }

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--slate);
  margin: 0 0 14px;
}

section h2 {
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  margin-bottom: 16px;
  max-width: 24ch;
}

.section-lede {
  color: var(--slate);
  max-width: 60ch;
  font-size: 1.02rem;
  margin: 0 0 44px;
}

/* ===== Directory Board (signature element) ===== */
.directory-board {
  background: var(--ink);
  border-radius: 8px;
  padding: 8px 0;
  overflow: hidden;
}

.board-row {
  display: grid;
  grid-template-columns: 110px 160px 1fr auto;
  align-items: center;
  gap: 22px;
  padding: 22px 32px;
  border-bottom: 1px solid rgba(238, 241, 238, 0.1);
  transition: background 0.15s ease;
}
.board-row:last-child { border-bottom: none; }
.board-row:hover { background: rgba(161, 92, 52, 0.14); }

.suite {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--copper);
}

.tenant {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  color: #fff;
}

.tenant-desc {
  color: rgba(238, 241, 238, 0.62);
  font-size: 0.92rem;
}

.board-link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--paper-raised);
  white-space: nowrap;
  border-bottom: 1px solid rgba(238, 241, 238, 0.3);
}
.board-link:hover { color: var(--copper); border-color: var(--copper); }

/* ===== Ledger table ===== */
.table-scroll { overflow-x: auto; }

.ledger-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
  font-size: 0.94rem;
}

.ledger-table thead th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--slate);
  padding: 0 18px 14px;
  border-bottom: 2px solid var(--ink);
}

.ledger-table td {
  padding: 20px 18px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.row-alt { background: var(--paper-raised); }

.cell-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  white-space: nowrap;
}

.cell-num {
  font-family: var(--font-mono);
  font-weight: 500;
  white-space: nowrap;
}
.cell-num span { color: var(--slate); font-size: 0.85em; }

.cell-check {
  font-family: var(--font-mono);
  color: var(--ledger-green);
  font-weight: 600;
}

.table-note {
  margin-top: 18px;
  font-size: 0.85rem;
  color: var(--slate);
}

/* ===== Use case cards ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.use-card {
  display: block;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 30px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.use-card:hover {
  border-color: var(--copper);
  transform: translateY(-3px);
}

.use-card-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--copper-dark);
  background: rgba(161, 92, 52, 0.1);
  padding: 4px 10px;
  border-radius: 3px;
  margin-bottom: 16px;
}

.use-card h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.use-card p {
  color: var(--slate);
  font-size: 0.95rem;
  margin: 0 0 18px;
}

.use-card-cta {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink);
}
.use-card:hover .use-card-cta { color: var(--copper); }

/* ===== About ===== */
.about-grid { max-width: 68ch; }
.about p {
  color: var(--slate);
  font-size: 1rem;
  margin: 0 0 18px;
}

/* ===== Footer ===== */
.site-footer {
  padding: 36px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-inner p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--slate);
}
.footer-links {
  display: flex;
  gap: 24px;
}
.footer-links a {
  font-size: 0.85rem;
  color: var(--slate);
  border-bottom: 1px solid transparent;
}
.footer-links a:hover { color: var(--copper); border-color: var(--copper); }

/* ===== Responsive ===== */
@media (max-width: 880px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-panel { order: -1; }
  .cards-grid { grid-template-columns: 1fr; }
  .board-row {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 20px 22px;
  }
  .board-link { margin-top: 8px; }
}

@media (max-width: 720px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 20px 28px;
    gap: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}