/* ===== AskMelanin — Design Tokens ===== */
:root{
  --plum:        #3B1E36;
  --plum-soft:   #5C3654;
  --lavender:    #D9CDEA;
  --lavender-deep:#B7A0D6;
  --burnt-orange:#C1622F;
  --beige:       #F4ECE1;
  --beige-warm:  #EFE3D3;
  --sage:        #4F7A5B;
  --sage-soft:   #E4EEE4;
  --ink:         #241521;
  --ink-soft:    #6B5C68;
  --line:        #E4D8CC;
  --white:       #FFFDF9;

  --serif: 'Lora', Georgia, 'Times New Roman', serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --radius: 18px;
  --radius-sm: 10px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  background: var(--beige);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
h1,h2,h3,h4{
  font-family: var(--serif);
  color: var(--plum);
  margin: 0 0 .4em;
  line-height: 1.2;
}
a{ color: inherit; text-decoration: none; }
p{ margin: 0 0 1em; color: var(--ink); }
button{ font-family: var(--sans); cursor: pointer; }

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

/* ===== Header ===== */
.site-header{
  display:flex; align-items:center; justify-content:space-between;
  padding: 1.4rem 6vw;
  border-bottom: 1px solid var(--line);
}
.logo{
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--plum);
  letter-spacing: -.01em;
}
.logo span{ color: var(--burnt-orange); }
.site-nav a{
  margin-left: 2rem;
  color: var(--ink-soft);
  font-size: .95rem;
}
.site-nav a:hover{ color: var(--plum); }

/* ===== Homepage hero ===== */
.home-hero{
  display:flex; align-items:center; justify-content:space-between;
  gap: 3rem;
  padding: 6vh 6vw 8vh;
  position: relative;
  overflow: hidden;
}
.hero-copy{ max-width: 620px; z-index: 2; }
.home-hero h1{
  font-size: clamp(2.1rem, 5vw, 3.2rem);
  max-width: 12ch;
  margin-bottom: 1.6rem;
}
.search-bar{
  display:flex; align-items:center;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .3rem .3rem .3rem 1.4rem;
  max-width: 480px;
  box-shadow: 0 1px 0 rgba(59,30,54,.04);
}
.search-bar input{
  flex:1; border:none; outline:none; background: transparent;
  font-family: var(--sans); font-size: 1rem; color: var(--ink);
  padding: .7rem 0;
}
.search-bar button{
  background: var(--plum);
  color: var(--white);
  border:none; border-radius: 999px;
  width: 42px; height: 42px;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.browse-link{
  display:inline-block; margin-top: 1.1rem;
  color: var(--plum-soft); font-weight: 600; font-size: .95rem;
  border-bottom: 1px solid transparent;
}
.browse-link:hover{ border-bottom-color: var(--plum-soft); }

.hero-motif{
  width: 220px; height: 220px;
  flex-shrink: 0;
}
@media (max-width: 700px){
  .hero-motif{ display:none; }
}

/* ===== Trust strip ===== */
.trust-strip{
  display:flex; flex-wrap: wrap; gap: 1.2rem;
  padding: 0 6vw 6vh;
}
.trust-item{
  flex: 1 1 220px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 1.1rem 1.3rem;
  display:flex; align-items:flex-start; gap:.8rem;
}
.trust-icon{ font-size: 1.2rem; }
.trust-item p{ margin:0; font-size: .92rem; color: var(--ink-soft); }

/* ===== Footer ===== */
.site-footer{
  display:flex; align-items:center; justify-content:space-between;
  background: var(--plum);
  color: var(--white);
  padding: 2rem 6vw;
}
.site-footer .logo{ color: var(--white); }
.site-footer .logo span{ color: #E39A6C; }
.footer-brand p{ margin:.2rem 0 0; color: #D9C9D3; font-size: .85rem; }
.support-btn{
  background: var(--burnt-orange);
  color: var(--white);
  padding: .8rem 1.5rem;
  border-radius: 999px;
  font-weight: 600; font-size: .92rem;
  white-space: nowrap;
}
.support-btn:hover{ background: #A8501F; }

/* ===== Browse page ===== */
.browse-main{ padding: 4vh 6vw 8vh; max-width: 760px; margin: 0 auto; }
.browse-main h1{ font-size: 2.2rem; }
.browse-sub{ color: var(--ink-soft); margin-bottom: 2rem; }
.ingredient-list{ display:flex; flex-direction: column; gap: .9rem; }
.ingredient-card{
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 1.1rem 1.4rem;
  transition: border-color .15s ease;
}
.ingredient-card:hover{ border-color: var(--lavender-deep); }
.ingredient-card h3{ font-size: 1.15rem; margin-bottom: .2rem; }
.ingredient-card p{ margin:0; color: var(--ink-soft); font-size: .9rem; }

/* ===== Ingredient page shell ===== */
.ingredient-header{
  display:flex; align-items:center; justify-content:space-between;
  padding: 1.2rem 6vw;
  border-bottom: 1px solid var(--line);
}
.back-link{ color: var(--ink-soft); font-size: .9rem; }
.progress-track{
  flex:1; max-width: 200px; height: 3px; background: var(--line);
  margin: 0 1.5rem; border-radius: 3px; overflow: hidden;
  display:none;
}
.progress-fill{ height:100%; background: var(--burnt-orange); width: 16.6%; transition: width .25s ease; }
.progress-label{ font-size: .82rem; color: var(--ink-soft); display:none; }
.ingredient-nav{ display:none; }

.ingredient-title{ padding: 1.6rem 6vw .5rem; }
.ingredient-title h1{ font-size: 2.4rem; margin-bottom: .2rem; }
.ingredient-title .aka{ color: var(--ink-soft); font-size: .95rem; }

.ingredient-body{ padding: 1rem 6vw 6vh; max-width: 900px; margin: 0 auto; }

/* Quick glance card (always visible, panel 1) */
.quick-glance{
  display:flex; gap: 1.6rem; flex-wrap: wrap;
  background: var(--white); border:1px solid var(--line);
  border-radius: var(--radius); padding: 1.6rem; margin-bottom: 1.6rem;
}
.molecule{
  width: 120px; height: 130px; flex-shrink:0;
  background: var(--lavender); border-radius: var(--radius-sm);
  padding: .5rem; object-fit: contain;
}
.qg-facts{ flex:1; min-width: 220px; }
.qg-facts h4{ font-size: .85rem; text-transform: none; color: var(--ink-soft); margin-bottom:.3rem; }
.pill-row{ display:flex; flex-wrap:wrap; gap:.5rem; margin-bottom: 1rem; }
.pill{
  background: var(--beige-warm); border-radius: 999px;
  padding: .3rem .9rem; font-size: .82rem; color: var(--plum-soft);
}
.pill.evidence-clinical{ background: var(--sage-soft); color: var(--sage); }
.pill.evidence-mechanistic{ background: var(--lavender); color: var(--plum); }
.pill.evidence-limited{ background: #F3E4D6; color: var(--burnt-orange); }
.pill.evidence-tolerated{ background: var(--sage-soft); color: var(--sage); }

/* Panels */
.panel{
  background: var(--white); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.8rem;
  margin-bottom: 1.2rem;
}
.panel-eyebrow{
  display:flex; align-items:center; gap:.6rem;
  font-size: .85rem; font-weight: 600; color: var(--plum-soft);
  margin-bottom: 1rem;
}
.panel-eyebrow .dot{ width:8px; height:8px; border-radius:50%; background: var(--lavender-deep); }
.panel.climate .panel-eyebrow .dot{ background: var(--burnt-orange); }
.panel.nigeria .panel-eyebrow .dot{ background: var(--sage); }
.panel h3{ font-size: 1.3rem; }

.evidence-item{
  display:flex; gap: .9rem; padding: .9rem 0;
  border-top: 1px solid var(--line);
}
.evidence-item:first-of-type{ border-top:none; }
.evidence-item h5{ margin:0 0 .2rem; font-size: .98rem; color: var(--ink); font-family: var(--sans); font-weight:600; }
.evidence-item p{ margin:0; font-size: .9rem; color: var(--ink-soft); }

.callout{
  background: var(--sage-soft); border-radius: var(--radius-sm);
  padding: 1rem 1.2rem; margin-top: 1rem; font-size: .9rem; color: #35543F;
}
.callout.warn{ background: #F5E9DC; color: #7A4520; }
.callout a{ color: var(--sage); font-weight: 600; text-decoration: underline; }
.callout.warn a{ color: var(--burnt-orange); }

.check-list{ list-style:none; margin:0 0 1rem; padding:0; }
.check-list li{
  display:flex; gap:.6rem; padding:.4rem 0; font-size: .92rem;
  color: var(--ink);
}
.check-list li::before{ content:"✓"; color: var(--sage); font-weight:700; }

.details-grid{
  display:grid; grid-template-columns: repeat(auto-fit,minmax(150px,1fr));
  gap: 1.2rem;
}
.details-grid dt{ font-size: .8rem; color: var(--ink-soft); margin-bottom:.2rem; }
.details-grid dd{ margin:0; font-family: var(--serif); font-size: 1.2rem; color: var(--plum); }

/* Nav buttons (mobile flip) */
.panel-nav{ display:flex; justify-content: flex-end; gap:.8rem; margin-top: 1rem; }
.nav-btn{
  background: var(--plum); color: var(--white);
  padding: .7rem 1.4rem; border-radius: 999px; border:none;
  font-size: .92rem; font-weight: 600;
}
.nav-btn.ghost{ background: transparent; color: var(--plum-soft); border: 1px solid var(--line); }
.nav-btn:disabled{ opacity:.35; cursor: default; }

.at-a-glance{
  border-top: 1px solid var(--line); margin-top: 2.5rem; padding-top: 1.4rem;
  font-size: .82rem; color: var(--ink-soft);
}

/* ===== Mobile: flip-through (default / small screens) ===== */
.progress-track, .progress-label{ display:flex; }
.panel{ display:none; }
.panel.active{ display:block; }
.accordion-toggle{ display:none; }

/* ===== Desktop: accordion ===== */
@media (min-width: 900px){
  .progress-track, .progress-label{ display:none; }
  .back-link{ display:none; }
  .ingredient-nav{ display:flex; }
  .ingredient-nav a{ margin-left: 2rem; color: var(--ink-soft); font-size: .95rem; }
  .ingredient-nav a:hover{ color: var(--plum); }

  .ingredient-body{ display:grid; grid-template-columns: 1fr; }
  .panel{ display:block !important; padding:0; overflow:hidden; }
  .panel-nav{ display:none; }

  .accordion-toggle{
    display:flex; width:100%; align-items:center; justify-content:space-between;
    background: none; border:none; padding: 1.5rem 1.8rem; text-align:left;
  }
  .accordion-toggle .panel-eyebrow{ margin:0; }
  .accordion-toggle .chevron{ color: var(--ink-soft); transition: transform .2s ease; }
  .panel.open .accordion-toggle .chevron{ transform: rotate(180deg); }

  .panel-content{
    max-height:0; overflow:hidden; transition: max-height .25s ease;
    padding: 0 1.8rem;
  }
  .panel.open .panel-content{ max-height: 900px; padding: 0 1.8rem 1.8rem; }

  .quick-glance{ margin-bottom: 2rem; }
}