/* ============================================================
   COVENANT FOUNDATION — editorial design system
   Parchment daylight + deep ink + institutional gold
   ============================================================ */

:root {
  /* Paper & ink */
  --paper:        #f3ecd8;
  --paper-deep:   #ebe1c6;
  --paper-soft:   #f8f3e3;
  --ivory:        #fbf7eb;
  --ink:          #181410;
  --ink-2:        #3a322a;
  --ink-3:        #6f6457;
  --ink-4:        #9a8e7c;
  --rule:         #d4ccb6;
  --rule-soft:    #e3dcc4;

  /* Accents */
  --gold:         #8a6a1f;
  --gold-bright:  #b48a2a;
  --gold-glow:    rgba(180, 138, 42, 0.14);
  --oxblood:      #6b2a2a;
  --night:        #14110d;

  /* Type */
  --display: "Cormorant Garamond", "EB Garamond", Georgia, serif;
  --body:    "Source Serif 4", "Source Serif Pro", Georgia, serif;
  --mono:    "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Rhythm */
  --col:    72rem;
  --gutter: 2rem;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 17px; }

body {
  background: var(--paper);
  color: var(--ink-2);
  font-family: var(--body);
  font-weight: 400;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* subtle paper grain */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.35;
  mix-blend-mode: multiply;
  background-image:
    radial-gradient(rgba(78,60,30,0.05) 1px, transparent 1px),
    radial-gradient(rgba(78,60,30,0.04) 1px, transparent 1px);
  background-size: 3px 3px, 7px 7px;
  background-position: 0 0, 1px 2px;
}

::selection { background: var(--gold-glow); color: var(--ink); }

/* ── Layout ─────────────────────────────────────────────────── */

.shell { max-width: var(--col); margin: 0 auto; padding: 0 var(--gutter); position: relative; z-index: 2; }
.shell-wide { max-width: 88rem; margin: 0 auto; padding: 0 var(--gutter); position: relative; z-index: 2; }
.measure { max-width: 38rem; }
.measure-wide { max-width: 46rem; }

section { padding: 3.5rem 0; position: relative; }

/* ── Type ───────────────────────────────────────────────────── */

h1, h2, h3, h4 { font-family: var(--display); color: var(--ink); font-weight: 500; letter-spacing: -0.005em; }

.display-1 {
  font-size: clamp(3.2rem, 9vw, 8rem);
  line-height: 0.92;
  letter-spacing: -0.02em;
  font-weight: 400;
  font-style: italic;
}
.display-2 {
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  line-height: 1.02;
  letter-spacing: -0.015em;
  font-weight: 500;
}
.display-3 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  line-height: 1.12;
  font-weight: 500;
}

.h-sub {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--gold);
  font-weight: 500;
}

.lede {
  font-family: var(--display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.3rem, 2vw, 1.7rem);
  line-height: 1.45;
  color: var(--ink-2);
}

p { color: var(--ink-2); margin-bottom: 1.1rem; }
p.tight { margin-bottom: 0.5rem; }
.dim { color: var(--ink-3); }

a { color: var(--gold); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color .2s, color .2s; }
a:hover { border-bottom-color: var(--gold); }

strong { color: var(--ink); font-weight: 600; }
em { font-style: italic; }

/* drop cap */
.dropcap::first-letter {
  font-family: var(--display);
  font-style: italic;
  font-weight: 400;
  float: left;
  font-size: 4.6em;
  line-height: 0.82;
  padding-right: 0.12em;
  padding-top: 0.06em;
  color: var(--gold);
}

/* ── Site nav ───────────────────────────────────────────────── */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  max-width: 88rem;
  margin: 0 auto;
  padding: 1rem var(--gutter);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 2rem;
}
.nav-brand {
  display: flex; align-items: center; gap: 0.7rem;
  color: var(--ink); border-bottom: none;
  font-family: var(--display);
  font-size: 1.05rem;
  letter-spacing: 0.04em;
}
.nav-brand .mark { width: 32px; height: auto; display: block; }
.nav-brand .word { font-style: italic; }
.nav-brand small {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: block;
  margin-top: -2px;
}
.nav-links {
  display: flex; gap: 2rem; justify-content: center;
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}
.nav-links a {
  color: var(--ink-3); border-bottom: none;
  position: relative;
  padding: 0.25rem 0;
}
.nav-links a::before {
  content: attr(data-num);
  position: absolute;
  top: -10px; left: 50%; transform: translateX(-50%);
  font-size: 0.55rem;
  color: var(--gold);
  opacity: 0.6;
}
.nav-links a:hover, .nav-links a.is-active { color: var(--ink); }
.nav-links a.is-active::after {
  content: "";
  position: absolute;
  left: -8px; right: -8px; bottom: -6px;
  height: 1px; background: var(--gold);
}
.nav-cta {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  padding: 0.6rem 1rem;
  border: 1px solid var(--ink);
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  transition: background .2s, color .2s;
}
.nav-cta:hover { background: var(--ink); color: var(--paper); }

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--ink);
  padding: 0.5rem 0.7rem;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  min-height: 44px;
  align-items: center;
}
.nav-toggle:hover { background: var(--ink); color: var(--paper); }

@media (max-width: 820px) {
  .nav-inner { grid-template-columns: auto 1fr auto; gap: 1rem; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--rule);
    padding: 1.5rem var(--gutter);
    flex-direction: column;
    gap: 0;
    box-shadow: 0 12px 24px rgba(0,0,0,0.08);
    z-index: 100;
  }
  .nav-links.is-open { display: flex; }
  .nav-links a {
    padding: 0.9rem 0;
    border-bottom: 1px solid var(--rule);
    font-size: 0.82rem;
  }
  .nav-links a::before { display: none; }
  .nav-links a:last-child { border-bottom: none; }
  .nav-toggle { display: inline-flex; }
  .nav-cta { display: none; }
}

/* ── Buttons ────────────────────────────────────────────────── */

.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  padding: 0.95rem 1.6rem;
  border: 1px solid var(--ink);
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  border-bottom: 1px solid var(--ink);
  transition: all .25s;
}
.btn:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn.btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.btn.btn-primary:hover {
  background: var(--gold);
  color: var(--night);
  border-color: var(--gold);
}
.btn .arrow {
  display: inline-block;
  transition: transform .25s;
}
.btn:hover .arrow { transform: translateX(4px); }

/* ── Cards ──────────────────────────────────────────────────── */

.card {
  background: var(--paper-soft);
  border: 1px solid var(--rule);
  padding: 1.8rem;
  position: relative;
}
.card .tag {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.6rem;
}
.card h3 { margin-bottom: 0.6rem; font-size: 1.3rem; }
.card p { font-size: 0.94rem; color: var(--ink-3); }

/* ── Tables ─────────────────────────────────────────────────── */

table { width: 100%; border-collapse: collapse; }
th {
  text-align: left;
  font-family: var(--mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  padding: 0.8rem 0.8rem 0.5rem;
  border-bottom: 1px solid var(--ink);
  font-weight: 500;
}
td {
  padding: 0.85rem 0.8rem;
  border-bottom: 1px solid var(--rule);
  font-size: 0.94rem;
  color: var(--ink-2);
  vertical-align: top;
}
td:first-child { color: var(--ink); }
tr:hover td { background: var(--paper-soft); }

/* ── Footer ─────────────────────────────────────────────────── */

.foot {
  border-top: 1px solid var(--rule);
  padding: 4rem 0 3rem;
  margin-top: 3rem;
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
@media (max-width: 760px) { .foot-grid { grid-template-columns: 1fr 1fr; } }
.foot h4 {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 1rem;
  font-weight: 500;
}
.foot ul { list-style: none; }
.foot ul li { margin-bottom: 0.5rem; font-size: 0.92rem; }
.foot ul a { color: var(--ink-2); border-bottom: none; }
.foot ul a:hover { color: var(--gold); }
.foot-bottom {
  display: flex; justify-content: space-between; align-items: baseline;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--ink-3);
  padding-top: 2rem;
  border-top: 1px solid var(--rule);
  flex-wrap: wrap; gap: 1rem;
}
.foot-verse {
  font-family: var(--display);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--ink-2);
  letter-spacing: 0;
  text-transform: none;
}

/* ── Glossary tooltips ── */
a.gloss {
  cursor: pointer;
  border-bottom: 1px dotted var(--gold);
  text-decoration: none;
  color: inherit;
  padding-bottom: 1px;
  transition: background .15s, color .15s;
}
a.gloss:hover, a.gloss:focus { outline: none; background: rgba(168, 130, 60, 0.10); color: var(--ink); }
.gloss-tip {
  position: absolute; display: none; z-index: 200;
  width: min(22rem, 92vw);
  background: var(--ink); color: var(--paper);
  border: 1px solid var(--gold);
  padding: 1rem 1.1rem 0.9rem;
  font-family: var(--body);
  box-shadow: 0 18px 40px rgba(0,0,0,0.25);
  opacity: 0; transform: translateY(-3px); transition: opacity .14s ease, transform .14s ease;
}
.gloss-tip.is-open { opacity: 1; transform: translateY(0); }
.gloss-tip .gt-eng { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--gold); margin-bottom: 0.35rem; }
.gloss-tip .gt-term { font-family: var(--display); font-style: italic; font-size: 1.35rem; color: var(--paper); margin-bottom: 0.5rem; line-height: 1; }
.gloss-tip .gt-what { font-size: 0.92rem; color: #d8cfb9; line-height: 1.5; margin: 0 0 0.7rem; }
.gloss-tip .gt-link { font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--gold); text-decoration: none; border-bottom: 1px solid transparent; }
.gloss-tip .gt-link:hover { border-bottom-color: var(--gold); }

/* ── Utilities ──────────────────────────────────────────────── */

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
@media (max-width: 820px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; gap: 2rem; }
}
.center { text-align: center; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: baseline; }
.gap-1 { gap: 1rem; } .gap-2 { gap: 2rem; }
.mt-1 { margin-top: 1rem; } .mt-2 { margin-top: 2rem; } .mt-3 { margin-top: 3rem; } .mt-4 { margin-top: 4rem; }
.mb-1 { margin-bottom: 1rem; } .mb-2 { margin-bottom: 2rem; } .mb-3 { margin-bottom: 3rem; }

/* ── Animated mark ──────────────────────────────────────────── */
@keyframes rise {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

.rise { animation: rise 0.9s cubic-bezier(.2,.7,.2,1) both; }
.rise-2 { animation-delay: .15s; }
.rise-3 { animation-delay: .3s; }
.rise-4 { animation-delay: .45s; }
.rise-5 { animation-delay: .6s; }

/* ── Mark (infinity-star) ──────────────────────────────────── */
.mark {
  display: inline-block;
  height: auto;
  object-fit: contain;
  vertical-align: middle;
}

/* Mark-draw — fade + scale entrance for the hero mark */
.mark-draw {
  opacity: 0;
  transform: scale(0.92);
  animation: mark-in 1.4s cubic-bezier(.2,.7,.2,1) 0.2s forwards;
}
@keyframes mark-in {
  to { opacity: 1; transform: scale(1); }
}

/* ── Verse layout — left column with chapter:verse ──────────── */
.verse-col {
  display: grid;
  grid-template-columns: 5rem 1fr;
  gap: 2rem;
}
.verse-col .v {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  padding-top: 0.55rem;
}
@media (max-width: 700px) {
  .verse-col { grid-template-columns: 1fr; gap: 0.4rem; }
  .verse-col .v { padding-top: 0; }
}

/* ── Big number ─────────────────────────────────────────────── */
.bignum {
  font-family: var(--display);
  font-weight: 500;
  font-style: italic;
  font-size: clamp(4rem, 12vw, 9rem);
  line-height: 0.9;
  color: var(--gold);
  letter-spacing: -0.04em;
}
.bignum .pct { font-size: 0.4em; vertical-align: super; font-style: normal; color: var(--ink-3); }

/* ── Marquee / kinetic ──────────────────────────────────────── */
.marquee {
  overflow: hidden;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 0.9rem 0;
  background: var(--paper-soft);
}
.marquee-track {
  display: flex; gap: 3rem;
  animation: scroll-x 50s linear infinite;
  width: max-content;
  font-family: var(--display);
  font-style: italic;
  font-size: 1.3rem;
  color: var(--ink-3);
  white-space: nowrap;
}
.marquee-track span::before {
  content: "\2726";
  color: var(--gold);
  margin-right: 3rem;
  font-style: normal;
}
@keyframes scroll-x {
  to { transform: translateX(-50%); }
}

/* Section header decorator */
.section-head {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: 2rem;
  align-items: baseline;
  margin-bottom: 3rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--ink);
}
.section-head .num {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}
.section-head h2 {
  font-family: var(--display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1;
  letter-spacing: -0.01em;
}
@media (max-width: 700px) {
  .section-head { grid-template-columns: 1fr; gap: 0.4rem; }
}

/* Highlight inline */
mark.gold {
  background: linear-gradient(180deg, transparent 60%, var(--gold-glow) 60%);
  color: inherit;
  padding: 0 0.1em;
}

/* ── Mapping grid (index page) ──────────────────────────────── */
.mapping-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}
@media (max-width: 820px) { .mapping-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .mapping-grid { grid-template-columns: 1fr; } }

.mapping-cell {
  padding: 1.4rem 1.2rem;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  cursor: default;
  position: relative;
  transition: background .25s;
  min-height: 130px;
  background: var(--paper);
}
.mapping-cell:hover { background: var(--ink); color: var(--paper); }
.mapping-cell:hover .mc-prob,
.mapping-cell:hover .mc-pat,
.mapping-cell:hover .mc-feat { color: var(--paper); }
.mapping-cell:hover .mc-num { color: var(--gold-bright); }
.mapping-cell:hover .mc-arrow { color: var(--gold-bright); opacity: 1; }

.mc-num {
  position: absolute; top: 0.6rem; right: 0.8rem;
  font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.14em; color: var(--ink-4);
}
.mc-prob {
  font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-3);
  margin-bottom: 0.45rem;
}
.mc-pat {
  font-family: var(--display); font-style: italic; font-size: 1.3rem; line-height: 1.1;
  color: var(--ink); margin-bottom: 0.45rem;
}
.mc-feat {
  font-size: 0.86rem; color: var(--ink-3); line-height: 1.4;
  transition: opacity .25s;
}
.mc-arrow {
  position: absolute; bottom: 0.7rem; right: 0.9rem;
  font-family: var(--mono); font-size: 0.9rem;
  color: var(--gold); opacity: 0;
  transition: opacity .25s;
}

/* ── Mobile optimization ────────────────────────────────────── */

@media (max-width: 600px) {
  html { font-size: 15px; }

  /* Tighter section spacing */
  section { padding: 2.5rem 0; }
  .shell, .shell-wide { padding: 0 1.2rem; }

  /* Hero scales down */
  .display-1 {
    font-size: clamp(2.4rem, 12vw, 3.6rem);
    line-height: 0.95;
  }
  .display-2 {
    font-size: clamp(1.8rem, 8vw, 2.8rem);
  }
  .display-3 {
    font-size: clamp(1.4rem, 6vw, 2rem);
  }

  /* Lede text smaller on mobile */
  .lede { font-size: clamp(1.1rem, 4vw, 1.4rem); }

  /* Section headers go single column */
  .section-head {
    grid-template-columns: 1fr;
    gap: 0.3rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
  }

  /* Big numbers scale */
  .bignum { font-size: clamp(3rem, 16vw, 5rem); }

  /* Tables scroll horizontally */
  table { display: block; overflow-x: auto; white-space: nowrap; }
  th, td { padding: 0.6rem 0.6rem; font-size: 0.82rem; }

  /* Buttons full-width on mobile */
  .btn { width: 100%; justify-content: center; padding: 0.85rem 1.2rem; }

  /* Nav CTA smaller */
  .nav-cta { font-size: 0.62rem; padding: 0.5rem 0.7rem; }

  /* Footer single column on small phones */
  .foot-grid { grid-template-columns: 1fr; gap: 2rem; }
  .foot-bottom { flex-direction: column; gap: 0.6rem; text-align: center; }

  /* Mapping grid cells less padding */
  .mapping-cell { padding: 1rem 0.9rem; min-height: 100px; }
  .mc-pat { font-size: 1.1rem; }

  /* Verse columns stack */
  .verse-col { grid-template-columns: 1fr; gap: 0.3rem; }
  .verse-col .v { padding-top: 0; }

  /* Drop cap smaller on mobile */
  .dropcap::first-letter { font-size: 3.4em; }

  /* Marquee smaller */
  .marquee-track { font-size: 1rem; gap: 2rem; }
  .marquee-track span::before { margin-right: 2rem; }

  /* Grid-2 in dark sections with inline styles */
  [style*="grid-template-columns: 8rem"] {
    grid-template-columns: 1fr !important;
    gap: 0.5rem !important;
  }

  /* Cards tighter */
  .card { padding: 1.4rem 1.2rem; }
  .card h3 { font-size: 1.1rem; }

  /* Touch targets: minimum 44px */
  .nav-brand .mark { width: 28px; }
  a, button, .btn, .nav-cta { min-height: 44px; display: inline-flex; align-items: center; }
  .foot ul li { margin-bottom: 0.7rem; }
  .foot ul a { padding: 0.3rem 0; display: inline-block; }
}

/* Small phones (iPhone SE, etc.) */
@media (max-width: 380px) {
  html { font-size: 14px; }
  .shell, .shell-wide { padding: 0 1rem; }
  .display-1 { font-size: 2.2rem; }
  .nav-inner { padding: 0.8rem 1rem; gap: 0.8rem; }
  .nav-brand .mark { width: 24px; }
  .nav-brand small { display: none; }
}