/* ============================================================
   MODUS ECONOMIC CONSULTING — design tokens
   ============================================================ */
:root{
  --ink-900: #14213A;   /* deep navy — hero / footer / headings */
  --ink-700: #2C3E5C;   /* secondary navy */
  --paper:   #FBF9F4;   /* off-white paper — section background */
  --paper-shade: #F1EDE3; /* slightly deeper paper for alternating sections */
  --brass:   #A8843D;   /* hairline rules, labels, accents */
  --brass-soft: rgba(168,132,61,0.35);
  --oxblood: #7A3030;   /* links / emphasis */
  --slate:   #5B6470;   /* muted text */
  --line:    #DFD9C8;   /* light hairline on paper */

  --font-display: "Spectral", "Source Serif 4", Georgia, serif;
  --font-body: "Source Serif 4", Georgia, serif;
  --font-mono: "IBM Plex Mono", "Courier New", monospace;

  --max-width: 880px;
  --side-pad: 32px;
}

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

body{
  margin: 0;
  background: var(--paper);
  color: var(--ink-900);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2{
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--ink-900);
  margin: 0 0 0.5em;
  line-height: 1.15;
}

p{ margin: 0 0 1em; }
a{ color: var(--oxblood); text-decoration: none; }
a:hover{ text-decoration: underline; }
em{ color: var(--slate); font-style: italic; }

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

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

/* ============================================================
   HEADER
   ============================================================ */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251,249,244,0.92);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.header-inner{
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px max(var(--side-pad), env(safe-area-inset-right)) 16px max(var(--side-pad), env(safe-area-inset-left));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.wordmark{
  display: flex;
  flex-direction: column;
  line-height: 1;
  color: var(--ink-900);
}
.wordmark-main{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 0.06em;
}
.wordmark-sub{
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brass);
  margin-top: 4px;
}
.header-right{
  display: flex;
  align-items: center;
  gap: 28px;
}
.primary-nav{
  display: flex;
  gap: 32px;
}
.primary-nav a{
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-700);
}
.primary-nav a:hover{ color: var(--oxblood); text-decoration: none; }

.header-cta{
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-900);
  border: 1px solid var(--brass);
  padding: 8px 16px;
  border-radius: 2px;
  white-space: nowrap;
  transition: background 0.15s ease, color 0.15s ease;
}
.header-cta:hover{
  background: var(--brass);
  color: var(--ink-900);
  text-decoration: none;
}

.nav-toggle{
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span{
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink-900);
}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  position: relative;
  background: var(--ink-900);
  color: #FBF9F4;
  padding: 96px max(var(--side-pad), env(safe-area-inset-right)) 88px max(var(--side-pad), env(safe-area-inset-left));
  overflow: hidden;
}
.hero-index{
  position: absolute;
  inset: auto 0 0 0;
  width: 100%;
  height: 45%;
  opacity: 0.9;
}
.index-baseline{
  stroke: rgba(251,249,244,0.08);
  stroke-width: 1;
}
.index-line{
  fill: none;
  stroke: var(--brass);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-dasharray: 1600;
  stroke-dashoffset: 1600;
  animation: draw-index 2.2s ease-out 0.3s forwards;
}
.index-dot{
  fill: var(--brass);
  opacity: 0;
  animation: dot-appear 0.4s ease-out 2.4s forwards;
}
@keyframes draw-index{
  to{ stroke-dashoffset: 0; }
}
@keyframes dot-appear{
  to{ opacity: 1; }
}
@media (prefers-reduced-motion: reduce){
  .index-line{ animation: none; stroke-dashoffset: 0; }
  .index-dot{ animation: none; opacity: 1; }
}

.hero-inner{
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
}
.eyebrow{
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: 18px;
}
.hero h1{
  font-size: clamp(34px, 5.2vw, 56px);
  color: #FBF9F4;
  max-width: 14ch;
}
.hero-lede{
  max-width: 46ch;
  font-size: 19px;
  color: rgba(251,249,244,0.78);
  margin-top: 18px;
}
.hero-actions{
  display: flex;
  gap: 16px;
  margin-top: 36px;
  flex-wrap: wrap;
}

.btn{
  display: inline-block;
  padding: 13px 26px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid var(--brass);
  border-radius: 2px;
  transition: background 0.15s ease, color 0.15s ease;
}
.btn-primary{
  background: var(--brass);
  color: var(--ink-900);
}
.btn-primary:hover{
  background: #BE9A52;
  text-decoration: none;
}
.btn-ghost{
  color: #FBF9F4;
  border-color: rgba(251,249,244,0.4);
}
.btn-ghost:hover{
  border-color: var(--brass);
  color: var(--brass);
  text-decoration: none;
}
.contact .btn-primary{ color: var(--paper); background: var(--oxblood); border-color: var(--oxblood); }
.contact .btn-primary:hover{ background: #8F3B3B; }

/* ============================================================
   SECTIONS — shared
   ============================================================ */
.section{
  padding: 88px max(var(--side-pad), env(safe-area-inset-right)) 88px max(var(--side-pad), env(safe-area-inset-left));
  border-bottom: 1px solid var(--line);
}
.section-shaded{ background: var(--paper-shade); }
.section-inner{
  max-width: var(--max-width);
  margin: 0 auto;
}
.section-label{
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: 14px;
}
.section h2{
  font-size: clamp(26px, 3.4vw, 34px);
  max-width: 22ch;
  margin-bottom: 36px;
}

/* ABOUT */
.about-grid{
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 48px;
  align-items: start;
}
.about-copy p{ font-size: 18px; }
.about-card{
  border: 1px solid var(--line);
  border-top: 3px solid var(--brass);
  padding: 24px;
  background: var(--paper);
}
.about-card-label{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: 6px;
}
.about-card-name{
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}
.about-card-detail{
  font-size: 15px;
  color: var(--slate);
  margin-bottom: 0;
}

/* SERVICES — ledger */
.ledger{
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.ledger-row{
  display: grid;
  grid-template-columns: 0.9fr 1.6fr;
  gap: 32px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}
.ledger-name{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
}
.ledger-desc{
  color: var(--slate);
  font-size: 16px;
}

/* METHOD */
.method-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px;
}
.method-item{
  border-top: 1px solid var(--brass-soft);
  padding-top: 18px;
}
.method-term{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 21px;
  color: var(--oxblood);
  margin-bottom: 10px;
}
.method-def{
  font-size: 15.5px;
  color: var(--slate);
  margin-bottom: 0;
}

/* CONTACT */
.contact{
  background: var(--ink-900);
  color: #FBF9F4;
  border-bottom: none;
}
.contact h2{ color: #FBF9F4; }
.section-label-light{ color: var(--brass); }
.contact-lede{
  max-width: 46ch;
  color: rgba(251,249,244,0.75);
}
.contact-info{
  font-size: 15.5px;
  margin-top: 32px;
}
.contact-info-label{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: 10px;
}
.contact-info .btn{
  margin-bottom: 16px;
}
.contact-info a{ color: #FBF9F4; }
.contact-info .btn-primary{ color: var(--paper); }
.contact-address{ color: rgba(251,249,244,0.7); margin-bottom: 0; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{
  background: var(--ink-900);
  color: rgba(251,249,244,0.6);
  padding: 28px max(var(--side-pad), env(safe-area-inset-right)) max(36px, env(safe-area-inset-bottom)) max(var(--side-pad), env(safe-area-inset-left));
}
.footer-inner{
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  border-top: 1px solid rgba(251,249,244,0.12);
  padding-top: 20px;
}
.wordmark-footer .wordmark-main{ color: #FBF9F4; font-size: 16px; }
.wordmark-footer .wordmark-sub{ color: var(--brass); }
.footer-note{ font-size: 13px; margin: 0; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 860px){
  .about-grid{ grid-template-columns: 1fr; }
  .method-grid{ grid-template-columns: 1fr; gap: 24px; }
  .ledger-row{ grid-template-columns: 1fr; gap: 8px; }
}

@media (max-width: 700px){
  .header-cta{ display: none; }
  .primary-nav{
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    gap: 0;
    padding: 8px 0;
    display: none;
  }
  .primary-nav.open{ display: flex; }
  .primary-nav a{
    padding: 14px max(32px, env(safe-area-inset-left));
    border-bottom: 1px solid var(--line);
  }
  .nav-toggle{ display: flex; }
  .hero{ padding: 76px 24px 72px; }
  .section{ padding: 64px 24px; }
}

@media (max-width: 420px){
  .wordmark-sub{ display: none; }
  .header-inner{ padding-top: 12px; padding-bottom: 12px; }
}