/* =========================================================
   IRA Biosciences — Design tokens
   Color: Teal #159C90 (deep) / #35B4BC (brand) / #0F2E2A (ink)
          Red  #B61A0F (brand) / #7A0F08 (deep)
   Type:  Poppins (display) / Inter (body) / JetBrains Mono (data/labels)
   ========================================================= */

:root{
  --teal: #35B4BC;
  --teal-deep: #0F726B;
  --teal-darker: #0A4F4A;
  --teal-tint: #E9F6F5;
  --ink: #0F2E2A;
  --ink-soft: #2B3F3C;
  --red: #B61A0F;
  --red-deep: #7A0F08;
  --cream: #F6F5F1;
  --white: #FFFFFF;
  --line: #E1E6E4;

  --font-display: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --max-w: 1160px;
  --radius: 14px;
}

*{ 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;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }
ul{ list-style: none; margin:0; padding:0; }
.wrap{ max-width: var(--max-w); margin: 0 auto; padding: 0 28px; }
.mono{ font-family: var(--font-mono); }

@media (prefers-reduced-motion: reduce){
  *{ 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;
  padding: 14px 28px;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.2px;
  cursor:pointer;
  border: 2px solid transparent;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease;
}
.btn:hover{ transform: translateY(-2px); }
.btn-primary{ background: var(--red); color: var(--white); box-shadow: 0 8px 20px rgba(182,26,15,0.28); }
.btn-primary:hover{ background: var(--red-deep); }
.btn-ghost{ background: transparent; color: var(--white); border-color: rgba(255,255,255,0.55); }
.btn-ghost:hover{ background: rgba(255,255,255,0.12); border-color: #fff; }
.btn-outline{ background: transparent; color: var(--teal-deep); border-color: var(--teal); }
.btn-outline:hover{ background: var(--teal); color: #fff; }
.btn.small{ padding: 10px 20px; font-size: 0.85rem; }
.btn.full{ width:100%; }

/* ---------- Header / Nav ---------- */
.site-header{
  position: sticky; top:0; z-index: 100;
  background: #ffffff;
  border-bottom: 1px solid var(--line);
}
.nav-inner{ display:flex; align-items:center; justify-content: space-between; padding: 14px 28px; }
.brand-logo{ height: 60px; width:auto; border-radius: 10px; }
.main-nav{ display:flex; align-items:center; gap: 30px; }
.main-nav a{
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.92rem;
  color: var(--ink-soft);
  transition: color .15s ease;
}
.main-nav a:hover{ color: var(--red); }
.nav-cta{
  background: var(--ink);
  color: #fff !important;
  padding: 9px 20px;
  border-radius: 999px;
}
.nav-cta:hover{ background: var(--red) !important; }

.nav-toggle{ display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding: 6px; }
.nav-toggle span{ width: 24px; height: 2.5px; background: var(--ink); border-radius: 2px; }

.map-embed{
  margin-top: 26px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 10px 26px rgba(15,46,42,0.08);
}
.map-embed iframe{ display:block; }

/* ---------- Hero ---------- */
.hero{
  position: relative;
  background: linear-gradient(160deg, var(--teal-darker) 0%, var(--teal-deep) 55%, var(--teal) 100%);
  background-size: 220% 220%;
  animation: gradientShift 14s ease-in-out infinite;
  color: #fff;
  overflow: hidden;
  padding: 120px 0 110px;
}
@keyframes gradientShift{
  0%{ background-position: 0% 30%; }
  50%{ background-position: 100% 70%; }
  100%{ background-position: 0% 30%; }
}

/* diagonal light flash sweeping across the hero */
.hero::before{
  content:'';
  position:absolute; top:0; left:-60%; width:45%; height:200%;
  background: linear-gradient(100deg, transparent 0%, rgba(255,255,255,0.16) 45%, rgba(255,255,255,0.28) 50%, rgba(255,255,255,0.16) 55%, transparent 100%);
  transform: rotate(8deg);
  animation: flashSweep 6.5s ease-in-out infinite;
  pointer-events: none;
  z-index: 1;
}
@keyframes flashSweep{
  0%{ left: -60%; }
  38%{ left: 130%; }
  100%{ left: 130%; }
}

/* floating particles drifting upward in the hero background */
.hero-particles{ position:absolute; inset:0; overflow:hidden; pointer-events:none; z-index:0; }
.hero-particles span{
  position:absolute;
  bottom: -40px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  animation: floatUp linear infinite;
}
.hero-particles span:nth-child(odd){ background: rgba(240,121,106,0.55); }
@keyframes floatUp{
  0%{ transform: translateY(0) translateX(0); opacity:0; }
  10%{ opacity: 1; }
  90%{ opacity: 1; }
  100%{ transform: translateY(-820px) translateX(var(--drift, 40px)); opacity:0; }
}
.hero-helix{
  position:absolute; top:0; right:-4%; height:100%; width: 46%;
  opacity: 0.35;
  pointer-events:none;
  animation: helixFloat 8s ease-in-out infinite;
  z-index: 1;
}
@keyframes helixFloat{
  0%, 100%{ transform: translateY(0) scale(1); }
  50%{ transform: translateY(-18px) scale(1.02); }
}
.helix-svg{ width:100%; height:100%; }
.helix-strand{
  fill:none; stroke-width: 10; stroke-linecap: round;
}
.helix-strand--a{ stroke: #F0796A; }
.helix-strand--b{ stroke: rgba(255,255,255,0.55); }
.helix-rungs line{ stroke: rgba(255,255,255,0.35); stroke-width: 3; }

.hero-inner{ position: relative; max-width: 680px; z-index: 2; }
.eyebrow{
  font-size: 0.8rem;
  letter-spacing: 1.8px;
  color: var(--red);
  margin: 0 0 10px;
  font-weight: 700;
  text-transform: uppercase;
}
.eyebrow.light{ color: #FFD2C4; }
.hero-title{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.1;
  margin: 0 0 22px;
}
.hero-sub{
  font-size: 1.08rem;
  color: rgba(255,255,255,0.9);
  max-width: 560px;
  margin: 0 0 36px;
}
.hero-cta{ display:flex; gap:16px; flex-wrap:wrap; }

/* ---------- Section basics ---------- */
.section{ padding: 96px 0; }
.section-light{ background: var(--cream); }
.section-tint{ background: var(--teal-tint); }
.section-dark{ background: var(--ink); color: #fff; }
.section-tag{
  display:inline-flex; align-items:center; gap:9px;
  font-family: var(--font-mono); font-weight:700; font-size:0.78rem;
  letter-spacing: 1.6px; text-transform: uppercase;
  color: var(--red);
  background: rgba(182,26,15,0.07);
  border: 1.5px solid rgba(182,26,15,0.22);
  padding: 7px 16px 7px 12px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.section-tag::before{
  content:''; width:7px; height:7px; border-radius:50%;
  background: var(--red); flex-shrink:0;
  box-shadow: 0 0 0 3px rgba(182,26,15,0.15);
}
.section-tag.light{
  color:#FFD9CC;
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.22);
}
.section-tag.light::before{
  background: #FFD9CC;
  box-shadow: 0 0 0 3px rgba(255,217,204,0.18);
}
.section-title{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.9rem, 3.6vw, 2.7rem);
  line-height: 1.22;
  margin: 0 0 20px;
  max-width: 760px;
  letter-spacing: -0.5px;
}
.section-title .accent{
  color: var(--red);
  position: relative;
}
.section-title.light .accent{ color: #FF9D82; }
.section-title.light{ color:#fff; }
.section-lead{
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 640px;
  margin: 0 0 40px;
}
.section-dark .section-lead{ color: rgba(255,255,255,0.75); }

/* Helix divider between sections */
.helix-divider{ height: 40px; overflow:hidden; }
.helix-divider svg{ width:100%; height:100%; }
.helix-divider path{ fill:none; stroke: var(--teal); stroke-width: 3; opacity: 0.35; }

/* ---------- Services ---------- */
.service-tabs{ display:flex; gap:10px; flex-wrap:wrap; margin-bottom: 34px; }
.tab-btn{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 11px 22px;
  border-radius: 999px;
  border: 2px solid var(--line);
  background: #fff;
  color: var(--ink-soft);
  cursor: pointer;
  transition: all .18s ease;
}
.tab-btn:hover{ border-color: var(--teal); }
.tab-btn.active{ background: var(--red); border-color: var(--red); color: #fff; }

.service-panel{ display:none; }
.service-panel.active{ display:block; animation: fadeUp .35s ease; }
@keyframes fadeUp{ from{ opacity:0; transform: translateY(8px);} to{ opacity:1; transform:none; } }

.service-list{ display:grid; gap: 14px; }
.service-list.two-col{ grid-template-columns: 1fr 1fr; }
.service-list li{
  display:flex; align-items:center; gap:14px;
  background:#fff; border:1px solid var(--line);
  border-left: 4px solid var(--teal);
  border-radius: 10px;
  padding: 16px 18px;
  font-size: 0.98rem;
  color: var(--ink-soft);
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.service-list li:hover{
  transform: translateX(3px);
  border-left-color: var(--red);
  box-shadow: 0 8px 20px rgba(15,46,42,0.07);
}
.tag{
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--red);
  background: rgba(182,26,15,0.08);
  border-radius: 6px;
  padding: 3px 8px;
  white-space: nowrap;
  letter-spacing: 0.4px;
}

/* ---------- Pricing ---------- */
.pricing-grid{
  display:grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
.pricing-card{
  background:#fff; border:1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px 24px;
  display:flex; flex-direction:column; gap:10px;
  position: relative;
  overflow: hidden;
  transition: transform .18s ease, box-shadow .18s ease;
}
.pricing-card::before{
  content:''; position:absolute; top:0; left:0; right:0; height:5px;
  background: linear-gradient(90deg, var(--teal), var(--red));
}
.pricing-card:hover{ transform: translateY(-4px); box-shadow: 0 16px 34px rgba(15,46,42,0.1); }
.pricing-card h3{ font-family: var(--font-display); font-size: 1.12rem; margin: 4px 0 2px; color: var(--ink); }
.pricing-note{ color: var(--ink-soft); font-size: 0.92rem; flex-grow:1; margin: 0 0 10px; }
.pricing-footnote{ margin-top: 30px; color: var(--ink-soft); font-size: 0.88rem; font-style: italic; }

/* ---------- Team ---------- */
.team-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.team-card{
  text-align:center; background: #fff;
  border-radius: var(--radius); padding: 40px 20px;
  border: 1px solid var(--line);
  border-top: 4px solid var(--teal);
  transition: transform .18s ease, box-shadow .18s ease;
}
.team-card:hover{ transform: translateY(-4px); box-shadow: 0 16px 34px rgba(15,46,42,0.08); }
.team-avatar{
  font-size: 2.4rem; margin: 0 auto 16px; width: 74px; height:74px;
  display:flex; align-items:center; justify-content:center;
  background: var(--teal-tint); border-radius: 50%;
}
.team-card h3{ font-family: var(--font-display); font-size: 1.1rem; margin: 0 0 6px; }
.team-role{ color: var(--ink-soft); font-size: 0.92rem; margin:0; }

/* ---------- Why Us ---------- */
.why-grid{ display:grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.why-card{
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 28px 22px;
  transition: transform .18s ease, background .18s ease;
}
.why-card:hover{ transform: translateY(-4px); background: rgba(255,255,255,0.09); }
.why-check{
  display:inline-flex; align-items:center; justify-content:center;
  width: 34px; height:34px; border-radius:50%;
  background: var(--teal); color:#fff; font-weight:700;
  margin-bottom: 16px;
}
.why-card h3{ font-family: var(--font-display); font-size: 1.02rem; margin: 0 0 8px; }
.why-card p{ color: rgba(255,255,255,0.72); font-size: 0.92rem; margin:0; }

/* ---------- Contact ---------- */
.contact-wrap{ display:grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items:start; }
.contact-list{ display:flex; flex-direction:column; gap: 22px; margin-top: 30px; }
.contact-list li{ display:flex; gap:14px; align-items:flex-start; }
.contact-icon{ font-size: 1.3rem; }
.contact-list strong{ font-family: var(--font-display); font-size: 0.95rem; display:block; margin-bottom:2px; }
.contact-list p{ margin:0; color: var(--ink-soft); font-size: 0.94rem; }
.contact-list a:hover{ color: var(--red); }

.contact-form{
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px; display:flex; flex-direction:column; gap: 6px;
}
.contact-form h3{ font-family: var(--font-display); margin: 0 0 18px; font-size: 1.2rem; }
.contact-form label{ font-size: 0.85rem; font-weight:600; color: var(--ink-soft); margin-top: 12px; }
.contact-form .optional{ font-weight:400; color:#8a9794; }
.contact-form input, .contact-form select, .contact-form textarea{
  font-family: var(--font-body);
  padding: 12px 14px;
  border: 1.5px solid var(--line);
  border-radius: 9px;
  font-size: 0.95rem;
  margin-top: 6px;
  outline: none;
  transition: border-color .15s ease;
  background:#fff;
  color: var(--ink);
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus{
  border-color: var(--teal);
}
.contact-form button{ margin-top: 20px; }
.form-status{ font-size: 0.88rem; margin-top: 10px; min-height: 1.2em; color: var(--teal-deep); }

/* ---------- Footer ---------- */
.site-footer{ background: var(--ink); color: rgba(255,255,255,0.7); padding: 44px 0; }
.footer-inner{ text-align:center; }
.footer-logo-wrap{
  display:inline-flex; margin: 0 auto 16px;
  border-radius: 12px; overflow:hidden;
}
.footer-logo{ height: 78px; display:block; }
.footer-tag{ font-family: var(--font-display); font-style: italic; margin: 0 0 12px; color: rgba(255,255,255,0.85); }
.footer-copy{ font-size: 0.82rem; margin:0; }

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

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 900px){
  .why-grid{ grid-template-columns: repeat(2, 1fr); }
  .pricing-grid{ grid-template-columns: repeat(2, 1fr); }
  .contact-wrap{ grid-template-columns: 1fr; gap: 40px; }
  .service-list.two-col{ grid-template-columns: 1fr; }
}

@media (max-width: 720px){
  .main-nav{
    position: fixed; top: 68px; left:0; right:0;
    background: #fff; flex-direction:column; align-items:flex-start;
    padding: 20px 28px 28px; gap: 18px;
    border-bottom: 1px solid var(--line);
    transform: translateY(-130%);
    transition: transform .25s ease;
  }
  .main-nav.open{ transform: translateY(0); }
  .nav-toggle{ display:flex; }
  .nav-cta{ width:100%; text-align:center; }

  .hero{ padding: 90px 0 70px; }
  .hero-helix{ width: 70%; opacity: 0.22; }
  .team-grid{ grid-template-columns: 1fr; }
  .why-grid{ grid-template-columns: 1fr; }
  .pricing-grid{ grid-template-columns: 1fr; }
}