/* ============================================
   Keviwise — Design Tokens
   Palette: ink navy, cool stone paper, brass + oxblood accents
   Type: Spectral (display) / IBM Plex Sans (body) / IBM Plex Mono (utility)
   ============================================ */

:root {
  --ink: #16223B;
  --ink-soft: #29344A;
  --paper: #ECEDE8;
  --paper-deep: #E2E3DC;
  --brass: #AD8A4E;
  --brass-light: #C8AC78;
  --oxblood: #6E2A2A;
  --slate: #5B6472;
  --white: #FFFFFF;
  --line: rgba(22, 34, 59, 0.12);

  --font-display: 'Spectral', Georgia, serif;
  --font-body: 'IBM Plex Sans', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  --max-width: 1160px;
  --radius: 3px;
}

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: var(--ink);
}

h1 { font-size: clamp(2.6rem, 5vw, 4.1rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.9rem, 3.2vw, 2.6rem); letter-spacing: -0.005em; }
h3 { font-size: 1.35rem; }

p { margin: 0 0 1em; color: var(--ink-soft); }
p.lede { font-size: 1.2rem; color: var(--slate); max-width: 46ch; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--oxblood);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 1.1em;
}
.eyebrow::before {
  content: '';
  width: 22px;
  height: 1px;
  background: var(--oxblood);
  display: inline-block;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 14px 24px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: var(--ink-soft); transform: translateY(-1px); }
.btn-brass { background: var(--brass); color: var(--ink); }
.btn-brass:hover { background: var(--brass-light); transform: translateY(-1px); }
.btn-outline { border-color: var(--ink); color: var(--ink); }
.btn-outline:hover { background: var(--ink); color: var(--paper); }

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(236, 237, 232, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  padding-bottom: 18px;
}
.wordmark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.4rem;
  letter-spacing: -0.01em;
}
.wordmark span { color: var(--oxblood); }
.nav-links {
  display: flex;
  gap: 32px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}
.nav-links a { position: relative; padding-bottom: 4px; }
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--oxblood);
  transition: width 0.2s ease;
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--oxblood); }
.nav-right { display: flex; align-items: center; gap: 28px; }

@media (max-width: 720px) {
  .nav-links { display: none; }
}

/* ---------- Sections ---------- */
.section { padding: 92px 0; }
.section-tight { padding: 56px 0; }
.section-ink { background: var(--ink); color: var(--paper); }
.section-ink h2, .section-ink h1 { color: var(--paper); }
.section-ink p { color: rgba(236, 237, 232, 0.72); }
.section-deep { background: var(--paper-deep); }
.border-top { border-top: 1px solid var(--line); }

/* ---------- Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
  padding: 76px 0 96px;
}
.hero-actions { display: flex; gap: 16px; margin-top: 2em; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 36px;
  margin-top: 3em;
  padding-top: 2em;
  border-top: 1px solid var(--line);
}
.hero-stat .num {
  font-family: var(--font-display);
  font-size: 1.7rem;
  color: var(--oxblood);
  font-weight: 600;
}
.hero-stat .label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--slate);
}

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding-top: 40px; }
}

/* ---------- Bookshelf signature illustration ---------- */
.shelf-wrap {
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  height: 420px;
  perspective: 900px;
}
.shelf-board {
  position: absolute;
  bottom: 18px;
  left: 4%;
  right: 4%;
  height: 10px;
  background: var(--ink);
  border-radius: 2px;
  box-shadow: 0 14px 22px rgba(22,34,59,0.25);
}
.spines {
  display: flex;
  align-items: flex-end;
  gap: 7px;
  position: relative;
  z-index: 2;
  margin-bottom: 26px;
}
.spine {
  width: 34px;
  border-radius: 2px 2px 0 0;
  position: relative;
  box-shadow: inset -6px 0 10px rgba(0,0,0,0.12);
  opacity: 0;
  transform: translateY(16px);
  animation: spineIn 0.6s ease forwards;
  transition: transform 0.25s ease;
  cursor: default;
}
.spine:hover { transform: translateY(-10px) rotate(-1.5deg); }
.spine span {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.85);
  position: absolute;
  bottom: 14px;
  left: 0; right: 0;
  text-align: center;
  white-space: nowrap;
}
.spine:nth-child(1) { height: 300px; background: var(--ink); animation-delay: 0.05s; }
.spine:nth-child(2) { height: 340px; background: var(--oxblood); animation-delay: 0.15s; }
.spine:nth-child(3) { height: 260px; background: var(--brass); animation-delay: 0.25s; }
.spine:nth-child(3) span { color: rgba(22,34,59,0.85); }
.spine:nth-child(4) { height: 320px; background: var(--ink-soft); animation-delay: 0.35s; }
.spine:nth-child(5) { height: 280px; background: var(--slate); animation-delay: 0.45s; }
.spine:nth-child(6) { height: 235px; background: var(--brass-light); animation-delay: 0.55s; }
.spine:nth-child(6) span { color: rgba(22,34,59,0.85); }
.spine:nth-child(7) { height: 310px; background: var(--ink); animation-delay: 0.65s; }

@keyframes spineIn {
  to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .spine { animation: none; opacity: 1; transform: none; }
  .spine:hover { transform: none; }
}

/* ---------- Spine-tab category label (reused on guide cards) ---------- */
.tab {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--white);
  background: var(--ink);
  padding: 5px 10px 5px 9px;
  border-radius: 2px;
}
.tab.strategy { background: var(--oxblood); }
.tab.finance { background: var(--brass); color: var(--ink); }
.tab.leadership { background: var(--ink-soft); }
.tab.craft { background: var(--slate); }

/* ---------- Grid / cards ---------- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 48px;
}
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
@media (max-width: 860px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.card:hover { box-shadow: 0 18px 32px rgba(22,34,59,0.10); transform: translateY(-3px); }
.card h3 { margin-bottom: 0.15em; }
.card p { font-size: 0.96rem; margin-bottom: 0; }
.card-link {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--oxblood);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ---------- Section heading row ---------- */
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  flex-wrap: wrap;
}
.section-head p.lede { margin-bottom: 0; }

/* ---------- Quote ---------- */
.quote-block {
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
}
.quote-block blockquote {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  font-style: italic;
  font-weight: 500;
  margin: 0 0 24px;
  line-height: 1.4;
}
.quote-attr {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--brass-light);
}

/* ---------- Timeline (About page — real chronological order, numbering justified) ---------- */
.timeline { position: relative; margin-top: 50px; padding-left: 40px; border-left: 1px solid var(--line); }
.timeline-item { position: relative; padding-bottom: 44px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item .yr {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--oxblood);
  letter-spacing: 0.04em;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -45px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--brass);
  border: 2px solid var(--paper);
  box-shadow: 0 0 0 1px var(--line);
}

/* ---------- Form ---------- */
.form-field { margin-bottom: 22px; display: flex; flex-direction: column; gap: 8px; }
.form-field label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--slate);
}
.form-field input, .form-field textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--ink);
  resize: vertical;
}
.form-field input:focus, .form-field textarea:focus {
  outline: 2px solid var(--brass);
  outline-offset: 1px;
}

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: rgba(236,237,232,0.7); padding: 56px 0 28px; }
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(236,237,232,0.14);
}
.footer-brand { font-family: var(--font-display); font-size: 1.3rem; color: var(--paper); }
.footer-tag { display: block; font-family: var(--font-body); font-size: 0.85rem; color: rgba(236,237,232,0.55); margin-top: 6px; max-width: 26ch; }
.footer-links { display: flex; gap: 28px; font-family: var(--font-mono); font-size: 0.82rem; }
.footer-links a:hover { color: var(--brass-light); }
.footer-meta { font-family: var(--font-mono); font-size: 0.72rem; padding-top: 20px; letter-spacing: 0.03em; }

/* ---------- Page hero (interior pages) ---------- */
.page-hero { padding: 64px 0 40px; }
.page-hero .eyebrow { margin-bottom: 0.8em; }
.page-hero p.lede { max-width: 56ch; }

@media (max-width: 720px) {
  .section { padding: 64px 0; }
  .footer-inner { flex-direction: column; }
}