/* ==========================================================================
   Richfield Sulphur Solutions, Inc. — shared stylesheet
   ========================================================================== */

:root{
  /* Brand palette */
  --mineral-green:      #16332B;
  --mineral-green-dark: #0D2019;
  --mineral-green-mid:  #1E4438;
  --sulphur:            #E8B923;
  --sulphur-dim:        #C9A11C;
  --graphite:           #33383C;
  --graphite-soft:      #565D62;
  --sand:               #DCCBA0;
  --sand-light:         #F2EBDA;
  --white:              #FCFBF8;
  --ink:                #20241F;
  --line:               #E2DCC9;
  --line-dark:          rgba(255,255,255,0.14);

  --font-display: "Big Shoulders Display", "Arial Narrow", sans-serif;
  --font-body: "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --container: 1180px;
  --radius: 3px;
}

*, *::before, *::after{ box-sizing: border-box; }

html{
  scroll-behavior: smooth;
}

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

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

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

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

h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.05;
  margin: 0 0 0.5em;
  color: var(--mineral-green);
}

h1{ font-size: clamp(2.6rem, 5.4vw, 4.4rem); }
h2{ font-size: clamp(1.9rem, 3.4vw, 2.7rem); }
h3{ font-size: clamp(1.25rem, 2vw, 1.55rem); }

p{ margin: 0 0 1.1em; max-width: 62ch; }
p.lede{ font-size: 1.15rem; color: var(--graphite-soft); max-width: 56ch; }

.container{
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

section{ padding: 88px 0; }
@media (max-width: 720px){ section{ padding: 60px 0; } }

.section--tight{ padding: 56px 0; }

/* Focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible{
  outline: 3px solid var(--sulphur);
  outline-offset: 2px;
}

/* ---------- granule texture ---------- */
.texture-granule{
  background-image: radial-gradient(circle, rgba(232,185,35,0.55) 0 2.4px, transparent 2.6px);
  background-size: 26px 26px;
}
.texture-granule--dark{
  background-image: radial-gradient(circle, rgba(232,185,35,0.28) 0 2.4px, transparent 2.6px);
  background-size: 26px 26px;
}

/* ---------- buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.98rem;
  border-radius: var(--radius);
  border: 1.5px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}
.btn--primary{
  background: var(--sulphur);
  color: var(--mineral-green-dark);
  border-color: var(--sulphur);
}
.btn--primary:hover{ background: var(--sulphur-dim); border-color: var(--sulphur-dim); }

.btn--ghost-light{
  background: transparent;
  color: var(--white);
  border-color: rgba(252,251,248,0.55);
}
.btn--ghost-light:hover{ border-color: var(--white); background: rgba(252,251,248,0.08); }

.btn--ghost-dark{
  background: transparent;
  color: var(--mineral-green);
  border-color: var(--mineral-green);
}
.btn--ghost-dark:hover{ background: var(--mineral-green); color: var(--white); }

.btn-row{ display: flex; gap: 14px; flex-wrap: wrap; margin-top: 30px; }

/* ==========================================================================
   Header
   ========================================================================== */

.utility-bar{
  background: var(--mineral-green-dark);
  color: var(--sand);
  font-size: 0.86rem;
}
.utility-bar .container{
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 8px;
  padding-bottom: 8px;
  gap: 16px;
  flex-wrap: wrap;
}
.utility-bar a{ color: var(--sand); border-bottom: 1px solid transparent; }
.utility-bar a:hover{ border-color: var(--sulphur); color: var(--white); }
.utility-links{ display: flex; gap: 22px; flex-wrap: wrap; }
.utility-tag{ color: var(--sulphur); font-weight: 600; letter-spacing: 0.02em; }

.site-header{
  background: var(--white);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 40;
}
.site-header .container{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  padding-bottom: 12px;
  gap: 20px;
}
.brand{ display: flex; align-items: center; }
.brand img{ height: 54px; width: auto; }

.main-nav{ display: flex; align-items: center; gap: 4px; }
.main-nav a{
  display: inline-block;
  padding: 10px 14px;
  font-weight: 600;
  font-size: 0.94rem;
  color: var(--graphite);
  border-bottom: 3px solid transparent;
}
.main-nav a:hover{ color: var(--mineral-green); border-color: var(--sand); }
.main-nav a.active{ color: var(--mineral-green); border-color: var(--sulphur); }

.nav-toggle{
  display: none;
  background: none;
  border: 1.5px solid var(--mineral-green);
  border-radius: var(--radius);
  padding: 8px 10px;
  cursor: pointer;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  display: block;
  width: 20px;
  height: 2px;
  background: var(--mineral-green);
  position: relative;
  transition: transform .2s ease;
}
.nav-toggle span::before, .nav-toggle span::after{ content:""; position: absolute; left: 0; }
.nav-toggle span::before{ top: -6px; }
.nav-toggle span::after{ top: 6px; }

@media (max-width: 900px){
  .main-nav{
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: stretch;
    display: none;
    padding: 6px 20px 16px;
  }
  .main-nav.open{ display: flex; }
  .main-nav a{ border-bottom: 1px solid var(--line); border-left: 3px solid transparent; padding: 12px 6px; }
  .main-nav a.active, .main-nav a:hover{ border-left-color: var(--sulphur); border-bottom-color: var(--line); }
  .nav-toggle{ display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 0; }
  .utility-links{ gap: 14px; }
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero{
  background: var(--mineral-green);
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.hero .container{
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
  padding-top: 84px;
  padding-bottom: 84px;
}
.hero h1{ color: var(--white); }
.hero .eyebrow-line{
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
  color: var(--sand);
  font-weight: 600;
  font-size: 0.95rem;
}
.hero .eyebrow-line::before{
  content:"";
  width: 34px;
  height: 3px;
  background: var(--sulphur);
  display: block;
}
.hero p.lede{ color: var(--sand); }

.hero-art{
  position: relative;
  aspect-ratio: 4/3.4;
  border: 1px solid rgba(252,251,248,0.18);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--mineral-green-dark);
}
.hero-art svg{ width: 100%; height: 100%; display: block; }

@media (max-width: 900px){
  .hero .container{ grid-template-columns: 1fr; padding-top: 48px; padding-bottom: 48px; }
  .hero-art{ order: -1; aspect-ratio: 16/9; }
}

.page-hero{
  background: var(--mineral-green);
  color: var(--white);
  padding: 64px 0 54px;
}
.page-hero h1{ color: var(--white); margin-bottom: 14px; }
.page-hero .eyebrow-line{
  display:flex; align-items:center; gap:12px; color: var(--sand); font-weight:600; font-size:0.92rem; margin-bottom:16px;
}
.page-hero .eyebrow-line::before{ content:""; width:34px; height:3px; background: var(--sulphur); display:block; }
.page-hero p.lede{ color: var(--sand); margin-bottom: 0; }

/* ==========================================================================
   Stat / fact strip
   ========================================================================== */

.fact-strip{
  background: var(--sand-light);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.fact-strip .container{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}
.fact{
  padding: 30px 28px;
  border-left: 1px solid var(--line);
}
.fact:first-child{ border-left: none; padding-left: 0; }
.fact h4{
  font-family: var(--font-display);
  color: var(--mineral-green);
  font-size: 1.3rem;
  margin: 0 0 6px;
}
.fact p{ margin: 0; font-size: 0.95rem; color: var(--graphite-soft); max-width: none; }

@media (max-width: 760px){
  .fact-strip .container{ grid-template-columns: 1fr; }
  .fact{ border-left: none; border-top: 1px solid var(--line); padding: 22px 0; }
  .fact:first-child{ border-top: none; }
}

/* ==========================================================================
   Two column / content blocks
   ========================================================================== */

.split{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
@media (max-width: 860px){ .split{ grid-template-columns: 1fr; gap: 34px; } }

.section-head{ max-width: 640px; margin: 0 auto 48px; text-align: left; }
.section-head.center{ margin-left: auto; margin-right: auto; text-align: center; }

.kicker{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--sulphur-dim);
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 12px;
}
.kicker::before{ content:""; width: 26px; height: 2px; background: var(--sulphur-dim); display:block; }

/* ==========================================================================
   Process steps
   ========================================================================== */

.process{
  counter-reset: step;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}
.process-step{
  counter-increment: step;
  padding: 30px 26px 26px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  position: relative;
}
.process-step:last-child{ border-right: none; }
.process-step::before{
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-display);
  font-size: 2.1rem;
  color: var(--sulphur-dim);
  display: block;
  margin-bottom: 10px;
}
.process-step h4{ font-family: var(--font-body); font-weight: 700; color: var(--mineral-green); font-size: 1.02rem; margin: 0 0 8px; }
.process-step p{ font-size: 0.94rem; color: var(--graphite-soft); margin: 0; max-width: none; }

@media (max-width: 900px){
  .process{ grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px){
  .process{ grid-template-columns: 1fr; }
  .process-step{ border-right: none; }
}

/* ==========================================================================
   Panels / cards
   ========================================================================== */

.panel{
  background: var(--white);
  border: 1px solid var(--line);
  padding: 32px;
  position: relative;
}
.panel::before{
  content:"";
  position: absolute;
  top: -1px; left: -1px;
  width: 22px; height: 22px;
  border-top: 3px solid var(--sulphur);
  border-left: 3px solid var(--sulphur);
}
.panel h3{ margin-bottom: 12px; }
.panel p:last-child{ margin-bottom: 0; }

.panel-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 900px){ .panel-grid{ grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px){ .panel-grid{ grid-template-columns: 1fr; } }

.panel-grid--2{ grid-template-columns: 1fr 1fr; }
@media (max-width: 620px){ .panel-grid--2{ grid-template-columns: 1fr; } }

/* ==========================================================================
   CTA band
   ========================================================================== */

.cta-band{
  background: var(--mineral-green-dark);
  color: var(--white);
}
.cta-band .container{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
}
.cta-band h2{ color: var(--white); margin-bottom: 8px; }
.cta-band p{ color: var(--sand); margin: 0; }
.cta-band .btn-row{ margin-top: 0; }

/* ==========================================================================
   Tables (specs / policy style)
   ========================================================================== */

.info-table{
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1.2em;
}
.info-table th, .info-table td{
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  font-size: 0.96rem;
  vertical-align: top;
}
.info-table th{
  width: 30%;
  color: var(--mineral-green);
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.01em;
}

/* ==========================================================================
   Forms
   ========================================================================== */

.form-grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.form-grid .field--full{ grid-column: 1 / -1; }
@media (max-width: 640px){ .form-grid{ grid-template-columns: 1fr; } }

.field label{
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 6px;
  color: var(--mineral-green);
}
.field input, .field select, .field textarea{
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.98rem;
  background: var(--white);
  color: var(--ink);
}
.field textarea{ resize: vertical; min-height: 120px; }
.field input:focus, .field select:focus, .field textarea:focus{
  border-color: var(--mineral-green);
}
.field-note{ font-size: 0.85rem; color: var(--graphite-soft); margin-top: 18px; }
.form-status{
  margin-top: 16px;
  font-size: 0.92rem;
  font-weight: 600;
  display: none;
}
.form-status.visible{ display: block; }
.form-status.ok{ color: var(--mineral-green); }

/* ==========================================================================
   Contact blocks
   ========================================================================== */

.contact-card{
  background: var(--sand-light);
  border: 1px solid var(--line);
  padding: 30px;
}
.contact-line{
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  align-items: flex-start;
}
.contact-line:last-child{ border-bottom: none; }
.contact-line .icon{
  width: 20px; height: 20px; flex: none; margin-top: 3px; color: var(--mineral-green);
}
.contact-line a{ font-weight: 600; color: var(--mineral-green); }
.contact-line a:hover{ color: var(--sulphur-dim); }
.contact-line .label{ display:block; font-size: 0.8rem; color: var(--graphite-soft); margin-bottom: 2px; }

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer{
  background: var(--mineral-green-dark);
  color: var(--sand);
  padding: 64px 0 0;
}
.footer-grid{
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--line-dark);
}
.footer-brand .wordmark{
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--white);
  letter-spacing: 0.01em;
  margin: 0 0 4px;
}
.footer-brand .wordmark span{ color: var(--sulphur); }
.footer-brand .tagline{
  border-top: 2px solid var(--sulphur);
  display: inline-block;
  padding-top: 8px;
  font-size: 0.9rem;
  color: var(--sand);
  margin-bottom: 18px;
}
.footer-brand p{ color: var(--sand); font-size: 0.92rem; max-width: 34ch; }

.footer-col h5{
  font-family: var(--font-body);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--sulphur);
  margin: 0 0 16px;
  font-weight: 700;
}
.footer-col ul{ list-style: none; margin: 0; padding: 0; }
.footer-col li{ margin-bottom: 10px; }
.footer-col a{ color: var(--sand); font-size: 0.94rem; }
.footer-col a:hover{ color: var(--white); }
.footer-col address{ font-style: normal; color: var(--sand); font-size: 0.94rem; line-height: 1.65; }

.footer-bottom{
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 22px 0 28px;
  font-size: 0.84rem;
  color: rgba(220,203,160,0.7);
}
.footer-bottom .legal-links{ display: flex; gap: 18px; }
.footer-bottom a{ color: rgba(220,203,160,0.85); }
.footer-bottom a:hover{ color: var(--white); }

@media (max-width: 900px){
  .footer-grid{ grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px){
  .footer-grid{ grid-template-columns: 1fr; }
}

/* ==========================================================================
   Policy pages
   ========================================================================== */

.policy-body{ max-width: 780px; }
.policy-body h2{ margin-top: 1.6em; font-size: 1.5rem; }
.policy-body h2:first-child{ margin-top: 0; }
.policy-body ul{ padding-left: 1.2em; }
.policy-body li{ margin-bottom: 0.5em; }
.updated-tag{
  display: inline-block;
  background: var(--sand-light);
  border: 1px solid var(--line);
  color: var(--graphite);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius);
  margin-bottom: 30px;
}

/* Misc */
.divider{ height: 1px; background: var(--line); border: none; margin: 0; }
.skip-link{
  position: absolute; left: -999px; top: 0; background: var(--sulphur); color: var(--mineral-green-dark);
  padding: 10px 16px; z-index: 100; font-weight:700;
}
.skip-link:focus{ left: 12px; top: 12px; }