/* =========================================================
   AUDAURA — DESIGN SYSTEM
   Ink / Bone / Signal (deep verdigris) — editorial, restrained
   ========================================================= */

:root{
  /* color */
  --ink:        #0A0A08;
  --ink-raised: #131210;
  --ink-line:   rgba(243,239,230,0.12);
  --ink-line-strong: rgba(243,239,230,0.22);
  --bone:       #F3EFE6;
  --bone-dim:   #C9C4B6;
  --stone:      #85806F;
  --signal:     #3E7D6B;
  --signal-bright: #5AAA8F;

  /* type */
  --font-display: "Fraunces", Georgia, serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  /* spacing scale */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6.5rem;
  --space-7: 9rem;

  --section-pad: clamp(4.5rem, 9vw, 9rem);
  --container: 1240px;

  --ease: cubic-bezier(.16,.84,.44,1);
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body{
  margin: 0;
  background: var(--ink);
  color: var(--bone);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

.skip-link{
  position: absolute; left: -9999px; top: 0;
  background: var(--bone); color: var(--ink);
  padding: 0.75rem 1.25rem; z-index: 200;
}
.skip-link:focus{ left: 1rem; top: 1rem; }

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

/* ---------- type ---------- */
.eyebrow{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--signal-bright);
  margin: 0 0 var(--space-2);
}
.eyebrow--light{ color: var(--signal-bright); }

.section-headline{
  font-family: var(--font-display);
  font-weight: 440;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-3);
  max-width: 18ch;
}
.section-headline--light{ color: var(--bone); }

.section-lede{
  font-size: clamp(1.05rem, 1.3vw, 1.25rem);
  color: var(--stone);
  max-width: 46ch;
  margin: 0 0 var(--space-5);
}
.section-lede--light{ color: var(--bone-dim); }

/* ---------- layout helpers ---------- */
.section{ padding: var(--section-pad) 0; border-top: 1px solid var(--ink-line); }
.section--raised{ background: var(--ink-raised); }
.section--dark{ background: var(--ink); }
.section-inner{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-4);
}
.section-inner--narrow{ max-width: 760px; }

/* ---------- buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease), transform .25s var(--ease);
  white-space: nowrap;
}
.btn-solid{
  background: var(--bone);
  color: var(--ink);
}
.btn-solid:hover{ background: var(--signal-bright); color: var(--ink); transform: translateY(-1px); }
.btn-solid.btn-light{ background: var(--bone); color: var(--ink); }

.btn-line{
  border-color: var(--ink-line-strong);
  color: var(--bone);
}
.btn-line:hover{ border-color: var(--signal-bright); color: var(--signal-bright); }
.btn-line-light{ border-color: rgba(243,239,230,0.3); color: var(--bone); }
.btn-line-light:hover{ border-color: var(--signal-bright); color: var(--signal-bright); }

/* =========================================================
   HEADER
   ========================================================= */
.site-header{
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10,10,8,0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--ink-line);
}
.header-inner{
  max-width: var(--container);
  margin: 0 auto;
  padding: 1.1rem var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}
.logo{
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.14em;
  font-size: 0.95rem;
}
.primary-nav{
  display: flex;
  gap: var(--space-4);
  font-size: 0.9rem;
  color: var(--bone-dim);
  margin-right: auto;
  margin-left: var(--space-5);
}
.primary-nav a{ transition: color .2s var(--ease); position: relative; }
.primary-nav a:hover{ color: var(--bone); }
.header-cta{ padding: 0.6rem 1.2rem; font-size: 0.85rem; }

.nav-toggle{
  display: none;
  width: 32px; height: 22px;
  background: none; border: none; cursor: pointer;
  position: relative; padding: 0;
}
.nav-toggle span{
  position: absolute; left: 0; right: 0; height: 1px;
  background: var(--bone); transition: transform .3s var(--ease), opacity .3s var(--ease);
}
.nav-toggle span:nth-child(1){ top: 0; }
.nav-toggle span:nth-child(2){ top: 10px; }
.nav-toggle span:nth-child(3){ top: 20px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1){ transform: translateY(10px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2){ opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3){ transform: translateY(-10px) rotate(-45deg); }

.mobile-nav{
  display: none;
  flex-direction: column;
  gap: 0;
  padding: 0 var(--space-4) var(--space-4);
  border-top: 1px solid var(--ink-line);
}
.mobile-nav a{
  padding: 1rem 0;
  border-bottom: 1px solid var(--ink-line);
  font-size: 1.05rem;
}
.mobile-nav .btn{ margin-top: var(--space-3); align-self: flex-start; }

@media (max-width: 900px){
  .primary-nav{ display: none; }
  .header-cta{ display: none; }
  .nav-toggle{ display: block; }
  .mobile-nav.is-open{ display: flex; }
}

/* =========================================================
   HERO
   ========================================================= */
.hero{
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--space-6) + 4rem) var(--space-4) var(--space-5);
  overflow: hidden;
}
.hero-field{
  position: absolute; inset: 0;
  z-index: 0;
  opacity: 0.9;
}
.hero-field svg{ width: 100%; height: 100%; display: block; }
.hero-field::after{
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 40%, transparent 0%, var(--ink) 88%);
}

.hero-inner{
  position: relative;
  z-index: 1;
  max-width: var(--container);
  margin: 0 auto;
  width: 100%;
  text-align: left;
}
.hero-headline{
  font-family: var(--font-display);
  font-weight: 440;
  font-size: clamp(2.6rem, 7vw, 5.6rem);
  line-height: 1.03;
  letter-spacing: -0.015em;
  margin: 0 0 var(--space-3);
}
.hero-headline .accent-ink{ color: var(--signal-bright); font-style: italic; font-weight: 340; }
.hero-sub{
  font-size: clamp(1.05rem, 1.4vw, 1.3rem);
  color: var(--bone-dim);
  max-width: 46ch;
  margin: 0 0 var(--space-4);
}
.hero-ctas{ display: flex; gap: var(--space-2); flex-wrap: wrap; }

.hero-chain{
  position: relative;
  z-index: 1;
  max-width: var(--container);
  margin: var(--space-6) auto 0;
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--stone);
}
.hero-chain i{
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--ink-line-strong), var(--ink-line));
  display: block;
  min-width: 24px;
}
@media (max-width: 640px){
  .hero-chain{ display: none; }
}

/* =========================================================
   OPPORTUNITY / THESIS CHAIN
   ========================================================= */
.opportunity-grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  align-items: start;
  margin-top: var(--space-4);
}
.opportunity-copy p{
  font-size: 1.08rem;
  color: var(--bone-dim);
  max-width: 42ch;
  margin: 0 0 var(--space-3);
}
.opportunity-copy p:first-child{ color: var(--bone); font-size: 1.25rem; font-family: var(--font-display); font-weight: 440; }

.thesis-chain{
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--ink-line-strong);
  padding-left: var(--space-4);
}
.thesis-step{
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--ink-line);
}
.thesis-step:first-child{ padding-top: 0; }
.thesis-index{
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--stone);
  width: 2ch;
}
.thesis-word{
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.2vw, 1.7rem);
  font-weight: 440;
  color: var(--bone-dim);
  transition: color .3s var(--ease);
}
.thesis-step--final{ border-bottom: none; padding-bottom: 0; }
.thesis-step--final .thesis-word{ color: var(--signal-bright); font-style: italic; }

@media (max-width: 860px){
  .opportunity-grid{ grid-template-columns: 1fr; gap: var(--space-4); }
}

/* =========================================================
   WHAT WE BUILD — cards
   ========================================================= */
.build-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--ink-line);
  border-left: 1px solid var(--ink-line);
}
.build-card{
  padding: var(--space-4);
  border-right: 1px solid var(--ink-line);
  border-bottom: 1px solid var(--ink-line);
  transition: background .3s var(--ease);
}
.build-card:hover{ background: rgba(243,239,230,0.03); }
.build-card h3{
  font-family: var(--font-display);
  font-weight: 440;
  font-size: 1.35rem;
  margin: 0 0 0.6rem;
}
.build-card p{
  color: var(--stone);
  font-size: 0.98rem;
  margin: 0;
  max-width: 32ch;
}
@media (max-width: 860px){
  .build-grid{ grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px){
  .build-grid{ grid-template-columns: 1fr; }
}

/* =========================================================
   HOW WE WORK — stages
   ========================================================= */
.stages{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-4);
}
.stage{
  padding-top: var(--space-3);
  border-top: 1px solid var(--ink-line-strong);
}
.stage-index{
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--signal-bright);
  margin-bottom: var(--space-2);
}
.stage-title{
  font-family: var(--font-display);
  font-weight: 440;
  font-size: 1.5rem;
  margin: 0 0 0.6rem;
}
.stage-desc{ color: var(--stone); font-size: 0.98rem; margin: 0; }
@media (max-width: 900px){
  .stages{ grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px){
  .stages{ grid-template-columns: 1fr; }
}

/* =========================================================
   PARTNERSHIP
   ========================================================= */
.partnership-table{
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-4) 0 var(--space-5);
}
.partnership-label{
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--stone);
  margin-bottom: var(--space-2);
}
.partnership-list{
  list-style: none;
  margin: 0; padding: 0;
}
.partnership-list li{
  font-family: var(--font-display);
  font-size: 1.15rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--ink-line);
}
.partnership-plus{
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--signal-bright);
  text-align: center;
}
.partnership-result{
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 340;
  font-size: 2.2rem;
  color: var(--signal-bright);
  margin: 0;
}
.partnership-note{
  max-width: 56ch;
  color: var(--bone-dim);
  font-size: 1.05rem;
  border-top: 1px solid var(--ink-line);
  padding-top: var(--space-3);
}
@media (max-width: 860px){
  .partnership-table{ grid-template-columns: 1fr; }
  .partnership-plus{ display: none; }
  .partnership-col{ padding-bottom: var(--space-3); border-bottom: 1px solid var(--ink-line); }
}

/* =========================================================
   PORTFOLIO
   ========================================================= */
.portfolio-grid--slots{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--ink-line);
  margin-top: var(--space-4);
  border: 1px solid var(--ink-line);
}
.portfolio-card{
  background: var(--ink);
  padding: var(--space-4) var(--space-3) var(--space-3);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}
.portfolio-glyph{
  width: 100%;
  max-width: 128px;
  height: auto;
  color: var(--ink-line-strong);
}
.portfolio-glyph .glyph-draw{
  color: var(--signal-bright);
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset 1.1s var(--ease) 0.3s;
}
.reveal.is-visible .portfolio-glyph .glyph-draw{ stroke-dashoffset: 0; }

.portfolio-info{
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  text-align: center;
  border-top: 1px solid var(--ink-line);
  padding-top: var(--space-2);
  width: 100%;
}
.portfolio-index{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--stone);
  letter-spacing: 0.1em;
}
.portfolio-status{
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 440;
  font-size: 1.15rem;
  color: var(--signal-bright);
}
.portfolio-type{
  font-size: 0.88rem;
  color: var(--bone-dim);
}
.portfolio-note{
  max-width: 56ch;
  color: var(--stone);
  font-size: 0.98rem;
  margin-top: var(--space-4);
}
@media (max-width: 720px){
  .portfolio-grid--slots{ grid-template-columns: 1fr; }
}

/* =========================================================
   WHY
   ========================================================= */
.why-grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-4);
}
.why-index{
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--stone);
  margin-bottom: var(--space-2);
}
.why-item h3{
  font-family: var(--font-display);
  font-weight: 440;
  font-size: 1.25rem;
  margin: 0 0 0.5rem;
}
.why-item p{ color: var(--stone); font-size: 0.95rem; margin: 0; }
@media (max-width: 900px){
  .why-grid{ grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px){
  .why-grid{ grid-template-columns: 1fr; }
}

/* =========================================================
   ABOUT
   ========================================================= */
.about-lede{
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 440;
  line-height: 1.4;
  max-width: 40ch;
  margin: 0 0 var(--space-3);
}
.about-body{
  color: var(--bone-dim);
  font-size: 1.05rem;
  max-width: 46ch;
  margin: 0 0 var(--space-5);
}
.founder{
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-top: var(--space-4);
  border-top: 1px solid var(--ink-line);
}
.founder-mark{
  width: 52px; height: 52px;
  border: 1px solid var(--ink-line-strong);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  color: var(--bone-dim);
  flex-shrink: 0;
}
.founder-name{ margin: 0; font-family: var(--font-display); font-size: 1.1rem; }
.founder-role{ margin: 0; color: var(--stone); font-size: 0.9rem; }

/* =========================================================
   CTA / CONTACT
   ========================================================= */
.cta-section{ border-top: 1px solid var(--ink-line); }
.contact-form{
  margin-top: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.form-row{ display: flex; flex-direction: column; gap: 0.5rem; }
.form-row label{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--stone);
}
.form-row input,
.form-row textarea{
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--ink-line-strong);
  color: var(--bone);
  font-family: var(--font-sans);
  font-size: 1.05rem;
  padding: 0.6rem 0;
  resize: vertical;
  transition: border-color .25s var(--ease);
}
.form-row input:focus,
.form-row textarea:focus{
  border-color: var(--signal-bright);
  outline: none;
}
.form-row input::placeholder,
.form-row textarea::placeholder{ color: var(--stone); opacity: 0.6; }
.form-actions{
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-top: var(--space-2);
}
.form-status{
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--signal-bright);
  min-height: 1.2em;
  margin: 0;
}

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer{
  border-top: 1px solid var(--ink-line);
  padding: var(--space-5) 0 var(--space-4);
}
.footer-inner{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-4);
}
.footer-top{
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}
.footer-logo{
  font-family: var(--font-mono);
  letter-spacing: 0.14em;
  font-size: 1rem;
}
.footer-chain{
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--stone);
}
.footer-nav{
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  padding: var(--space-3) 0;
  border-top: 1px solid var(--ink-line);
  border-bottom: 1px solid var(--ink-line);
  font-size: 0.92rem;
  color: var(--bone-dim);
}
.footer-nav a:hover{ color: var(--bone); }
.footer-meta{
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: var(--space-3) 0;
  font-size: 0.92rem;
  color: var(--bone-dim);
}
.footer-social{ display: flex; gap: var(--space-3); }
.footer-social a{ color: var(--stone); }
.footer-social a:hover{ color: var(--bone); }
.footer-legal{
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: var(--stone);
}
.footer-legal a:hover{ color: var(--bone); }

/* =========================================================
   REVEAL ANIMATION
   ========================================================= */
.reveal{
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal.is-visible{ opacity: 1; transform: translateY(0); }

/* stagger inside hero on load */
.hero-headline.reveal{ transition-delay: 0.05s; }
.hero-sub.reveal{ transition-delay: 0.18s; }
.hero-ctas.reveal{ transition-delay: 0.3s; }
.hero-chain.reveal{ transition-delay: 0.4s; }