/* ===== Tokens / Reset ===== */
:root{
  --basalt:#1C1B19;
  --basalt-card:#242220;
  --quartz:#F6F3EC;
  --gold:#B38A3C;
  --slate:#5B5A52;
  --ink:#121110;
  --feldspar-pink:#D9B8AE;
  --font-display:"Arvo", serif;
  --font-body:"Inter", sans-serif;
  --font-mono:"JetBrains Mono", monospace;
  --header-h:72px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--quartz);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{
  font-family:var(--font-display);
  font-weight:700;
  margin:0 0 .5em;
  line-height:1.15;
  letter-spacing:-0.01em;
}
p{ margin:0 0 1em; }
a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
.wrap{
  max-width:1180px;
  margin:0 auto;
  padding:0 24px;
}
@media (max-width:520px){
  .wrap{ padding:0 18px; }
}

a:focus-visible,
button:focus-visible{
  outline:2px solid var(--gold);
  outline-offset:3px;
}

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

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-family:var(--font-body);
  font-weight:600;
  font-size:.95rem;
  padding:.85em 1.6em;
  border-radius:4px;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:background-color .15s ease, color .15s ease, border-color .15s ease, transform .15s ease;
}
.btn:hover{ transform:translateY(-1px); }
.btn-primary{
  background:var(--gold);
  color:var(--basalt);
  border-color:var(--gold);
}
.btn-primary:hover{ background:#c69a4a; border-color:#c69a4a; }
.btn-outline{
  background:transparent;
  color:var(--ink);
  border-color:var(--ink);
}
.btn-outline:hover{ background:var(--ink); color:var(--quartz); }
.btn-outline-dark{
  color:var(--quartz);
  border-color:var(--quartz);
}
.btn-outline-dark:hover{ background:var(--quartz); color:var(--basalt); }
.btn-ghost{
  padding:.5em 1.1em;
  font-size:.85rem;
  color:var(--quartz);
  border-color:var(--slate);
}
.btn-ghost:hover{ border-color:var(--gold); color:var(--gold); }

.cta-row{
  display:flex;
  flex-wrap:wrap;
  gap:16px;
  margin-top:1.75em;
}

/* Eyebrows / mono labels */
.eyebrow,
.section-eyebrow{
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--gold);
  margin:0 0 1em;
}
.eyebrow-on-dark{ color:var(--gold); }
.on-dark{ color:var(--quartz); }

/* ===== Strata band (signature motif) ===== */
.strata-band{
  width:100%;
  height:10px;
  background:repeating-linear-gradient(
    90deg,
    var(--basalt) 0, var(--basalt) 7%,
    var(--gold) 7%, var(--gold) 11%,
    var(--quartz) 11%, var(--quartz) 24%,
    var(--slate) 24%, var(--slate) 30%,
    var(--basalt) 30%, var(--basalt) 41%,
    var(--quartz) 41%, var(--quartz) 47%,
    var(--gold) 47%, var(--gold) 53%,
    var(--slate) 53%, var(--slate) 63%,
    var(--basalt) 63%, var(--basalt) 78%,
    var(--quartz) 78%, var(--quartz) 86%,
    var(--gold) 86%, var(--gold) 92%,
    var(--slate) 92%, var(--slate) 100%
  );
}
.strata-band-small{ height:5px; }

/* ===== Header ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:var(--basalt);
  height:var(--header-h);
  display:flex;
  align-items:center;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.wordmark{
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.15rem;
  color:var(--quartz);
  letter-spacing:-0.01em;
  white-space:nowrap;
}
.wordmark span{ color:var(--gold); }

.main-nav{
  display:flex;
  gap:28px;
  margin-left:auto;
  margin-right:28px;
}
.main-nav a{
  font-size:.92rem;
  font-weight:500;
  color:var(--quartz);
  opacity:.85;
  transition:opacity .15s ease, color .15s ease;
}
.main-nav a:hover{ opacity:1; color:var(--gold); }

.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:36px;
  height:32px;
  background:none;
  border:none;
  cursor:pointer;
  padding:0;
}
.nav-toggle span{
  display:block;
  height:2px;
  width:100%;
  background:var(--quartz);
  transition:transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

@media (max-width:880px){
  .main-nav{
    position:absolute;
    top:var(--header-h);
    left:0;
    right:0;
    flex-direction:column;
    background:var(--basalt);
    padding:8px 24px 20px;
    gap:16px;
    border-top:1px solid #33312c;
    display:none;
  }
  .main-nav.nav-open{ display:flex; }
  .nav-toggle{ display:flex; }
  .nav-cta{ display:none; }
}

/* ===== Sections (shared) ===== */
.section{ padding:96px 0; }
.section-light{ background:var(--quartz); color:var(--ink); }
.section-dark{ background:var(--basalt); color:#D8D5CC; }
.section-dark h2{ color:var(--quartz); }
@media (max-width:800px){
  .section{ padding:64px 0; }
}

/* ===== Hero ===== */
.hero{
  background:
    linear-gradient(180deg, rgba(20,19,17,.80) 0%, rgba(20,19,17,.72) 45%, var(--basalt) 100%),
    url("assets/hero.jpg") center 35% / cover no-repeat;
  color:var(--quartz);
  padding:150px 0 120px;
}
.hero-inner{ max-width:760px; }
.hero h1{
  font-size:clamp(2.2rem, 5vw, 3.85rem);
  color:var(--quartz);
}
.hero-lede{
  max-width:60ch;
  font-size:1.08rem;
  color:#C9C6BC;
}
@media (max-width:800px){
  .hero{ padding:110px 0 80px; }
}

/* ===== About ===== */
.about-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr;
  gap:64px;
  align-items:start;
}
.about-copy h2{ font-size:clamp(1.6rem, 3vw, 2.2rem); max-width:18ch; }
.about-copy p{ color:#3a3733; max-width:60ch; }

.about-media{
  display:flex;
  flex-direction:column;
  gap:24px;
}
.about-photo{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:4px;
  border:1px solid var(--slate);
}

.survey-card{
  background:#FBF9F4;
  border:1px solid var(--slate);
  padding:32px;
  border-radius:4px;
}
.survey-label{
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--slate);
  margin-bottom:.4em;
}
.survey-main{
  font-size:1.05rem;
  font-weight:500;
  margin-bottom:0;
}
.survey-mono{
  font-family:var(--font-mono);
  font-size:1rem;
  letter-spacing:.03em;
}
.survey-rule{
  height:1px;
  background:#cfcabd;
  margin:20px 0;
}

@media (max-width:800px){
  .about-grid{ grid-template-columns:1fr; gap:40px; }
}

/* ===== Photo band ===== */
.photo-band{
  position:relative;
  height:320px;
  overflow:hidden;
}
.photo-band img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.photo-band::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(0deg, rgba(20,19,17,.78) 0%, rgba(20,19,17,.15) 55%, transparent 100%);
}
.photo-band-caption{
  position:absolute;
  left:0;
  right:0;
  bottom:20px;
  margin:0;
  text-align:center;
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--quartz);
  z-index:1;
}
@media (max-width:800px){
  .photo-band{ height:220px; }
}

/* ===== Products ===== */
#products h2{ font-size:clamp(1.6rem, 3vw, 2.2rem); margin-bottom:1em; }

.product-grid{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:24px;
}
.assay-card{
  background:var(--basalt-card);
  border:1px solid #38352f;
  border-radius:4px;
  padding:20px;
  display:flex;
  flex-direction:column;
}
.assay-card h3{
  font-size:1.2rem;
  color:var(--quartz);
  margin-top:.9em;
}
.assay-card p{
  color:#B9B6AC;
  font-size:.92rem;
  flex-grow:1;
}
.spec-tag{
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.07em;
  text-transform:uppercase;
  color:#D8D5CC;
  border-left:2px solid var(--gold);
  padding-left:.6em;
  margin-top:auto;
  margin-bottom:0;
}

.swatch{
  height:120px;
  border-radius:3px;
  border:1px solid rgba(255,255,255,.06);
  overflow:hidden;
  background:var(--slate);
}
.swatch img{
  width:100%;
  height:100%;
  object-fit:cover;
}

@media (max-width:1000px){
  .product-grid{ grid-template-columns:repeat(2, 1fr); }
}
@media (max-width:520px){
  .product-grid{ grid-template-columns:1fr; }
}

/* ===== Why ===== */
.why-grid{
  display:grid;
  grid-template-columns:.9fr 1.4fr;
  gap:56px;
}
.why-intro h2{ font-size:clamp(1.6rem, 3vw, 2.2rem); max-width:16ch; }
.why-list{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:32px 40px;
}
.why-item p{ margin-bottom:.35em; }
.why-item p:last-child{ color:#3a3733; margin-bottom:0; }
.why-mark{
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.07em;
  text-transform:uppercase;
  color:var(--gold);
}

@media (max-width:800px){
  .why-grid{ grid-template-columns:1fr; gap:32px; }
  .why-list{ grid-template-columns:1fr; }
}

/* ===== Contact ===== */
.contact-section{
  text-align:center;
  background:
    linear-gradient(180deg, var(--basalt) 0%, rgba(20,19,17,.82) 25%, rgba(20,19,17,.88) 100%),
    url("assets/mineral-piles.jpg") center 30% / cover no-repeat;
}
.contact-inner{ max-width:680px; margin:0 auto; }
.contact-inner h2{ font-size:clamp(1.6rem, 3vw, 2.2rem); }
.contact-lede{ color:#C9C6BC; }
.contact-section .cta-row{ justify-content:center; }
.contact-address{
  margin-top:2em;
  font-family:var(--font-mono);
  font-size:.85rem;
  letter-spacing:.03em;
  color:#9A978C;
}

/* ===== Legal pages ===== */
.legal-wrap{ max-width:720px; }
.legal-page h1{ font-size:clamp(1.8rem, 4vw, 2.6rem); }
.legal-updated{
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.06em;
  text-transform:uppercase;
  color:var(--slate);
  margin-bottom:2em;
}
.legal-page h2{
  font-size:1.15rem;
  margin-top:1.8em;
}
.legal-page p{ color:#3a3733; }
.legal-page a{ color:var(--gold); text-decoration:underline; }

/* ===== Footer ===== */
.site-footer{
  background:var(--basalt);
}
.footer-inner{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  padding:24px 0;
  font-size:.85rem;
  color:#9A978C;
}
.footer-links{
  display:flex;
  gap:20px;
}
.footer-links a{ color:#9A978C; transition:color .15s ease; }
.footer-links a:hover{ color:var(--gold); }
.footer-mono{
  font-family:var(--font-mono);
  letter-spacing:.04em;
}