/* ============================================================
   NIRVANA BIOTECH — COMMERCIAL SITE
   Clinical white + deep blue + amber. Light-mode sibling to the
   research site's dark mode — same restraint, opposite ground.
   ============================================================ */

:root{
  --paper:      #FAFAF7;
  --paper-dim:  #F0EFE9;
  --ink:        #101820;
  --ink-soft:   #2A333C;
  --blue:       #0F5C8C;
  --blue-bright:#1578B5;
  --amber:      #E8A33D;
  --amber-deep: #C9821F;
  --steel:      #6B7680;
  --steel-dim:  #9AA3AB;
  --line:       rgba(16,24,32,0.10);
  --line-strong:rgba(16,24,32,0.18);
  --line-dark:  rgba(250,250,247,0.16);

  --display: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --sans:    "Inter", -apple-system, "Helvetica Neue", Arial, sans-serif;
  --mono:    "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;

  --measure: 64ch;
}

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

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a{ color: inherit; text-decoration: none; }
img{ max-width:100%; display:block; }
::selection{ background: var(--amber); color: var(--ink); }
:focus-visible{ outline: 2px solid var(--blue); outline-offset: 3px; }

/* ---------- type scale ---------- */
h1,h2,h3,h4{ font-family: var(--display); font-weight: 600; margin:0; letter-spacing: -0.01em; }
.eyebrow{
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--blue-bright);
}
.lede{ font-size: 1.1rem; line-height: 1.65; color: var(--ink-soft); max-width: var(--measure); }
.body-copy{ font-size: 1rem; line-height: 1.75; color: rgba(16,24,32,0.84); max-width: var(--measure); }
.body-copy + .body-copy{ margin-top: 1.1em; }

/* ---------- layout shell ---------- */
.shell{ max-width: 1280px; margin: 0 auto; padding: 0 6vw; }
@media (max-width: 640px){ .shell{ padding: 0 5.5vw; } }
main{ display:block; }

/* ---------- top nav ---------- */
.topnav{
  position: sticky; top:0; z-index: 80;
  background: rgba(250,250,247,0.92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.topnav-inner{
  max-width:1280px; margin:0 auto; padding: 0 6vw;
  height: 76px; display:flex; align-items:center; justify-content:space-between;
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand-mark{ width: 34px; height:34px; border-radius:8px; object-fit:cover; border:1px solid var(--line-strong); }
.brand-text{ font-family: var(--display); font-weight:600; font-size:1.05rem; letter-spacing:0.01em; }
.brand-sub{ font-family: var(--mono); font-size:0.6rem; letter-spacing:0.22em; color: var(--steel); text-transform:uppercase; }

.navlinks{ display:flex; gap: 1.6rem; font-size:0.84rem; }
.navlinks a{ position:relative; padding: 6px 0; color: var(--steel); font-weight:500; transition: color .2s ease; }
.navlinks a::after{ content:""; position:absolute; left:0; bottom:0; width:0; height:2px; background: var(--amber); transition: width .25s ease; }
.navlinks a:hover, .navlinks a.is-active{ color: var(--ink); }
.navlinks a.is-active::after, .navlinks a:hover::after{ width:100%; }

.nav-toggle{ display:none; background:none; border:1px solid var(--line-strong); color:var(--ink); width:40px; height:40px; border-radius:8px; }
@media (max-width: 980px){
  .navlinks{ display:none; }
  .nav-toggle{ display:flex; align-items:center; justify-content:center; }
}
.mobile-menu{
  display:none; position:fixed; inset:76px 0 0 0; z-index:79;
  background: var(--paper); padding: 2rem 6vw; flex-direction:column; gap:1.4rem;
}
.mobile-menu.open{ display:flex; }
.mobile-menu a{ font-family: var(--display); font-size:1.6rem; color: var(--ink); }

/* ---------- spec strip (signature element) ---------- */
.spec-strip{
  display:flex; gap:1.6rem; flex-wrap:wrap; margin-top:1rem;
  font-family: var(--mono); font-size:0.78rem; color: var(--steel);
}
.spec-strip .spec-item b{ color: var(--blue); font-weight:500; }
.spec-strip .spec-item::before{ content:"//"; color: var(--steel-dim); margin-right:0.4em; }

/* ---------- hero ---------- */
.hero{ position:relative; padding: 7rem 0 4.5rem; border-bottom: 1px solid var(--line); }
.hero-eyebrow{ margin-bottom:1.1rem; }
.hero h1{ font-size: clamp(2.2rem, 5vw, 4rem); line-height: 1.05; max-width: 18ch; }
.hero .lede{ margin-top: 1.5rem; }

/* ---------- section spacing ---------- */
.section{ padding: 5rem 0; }
.section + .section{ border-top: 1px solid var(--line); }
.section-head{ margin-bottom: 2.8rem; }
.section-head .eyebrow{ margin-bottom: 0.8rem; }
.section-head h2{ font-size: clamp(1.7rem, 2.8vw, 2.4rem); }

/* ---------- dark variant section (used sparingly, for contrast/CTA) ---------- */
.section--dark{ background: var(--ink); color: var(--paper); border-color: var(--line-dark); }
.section--dark .eyebrow{ color: var(--amber); }
.section--dark .lede{ color: rgba(250,250,247,0.72); }
.section--dark .body-copy{ color: rgba(250,250,247,0.84); }
.section--dark h2{ color: var(--paper); }

/* ---------- product cards ---------- */
.card-grid{ display:grid; gap: 1.5rem; }
.grid-2{ grid-template-columns: repeat(2,1fr); }
.grid-3{ grid-template-columns: repeat(3,1fr); }
@media (max-width: 860px){ .grid-2,.grid-3{ grid-template-columns: 1fr; } }

.product-card{
  border:1px solid var(--line-strong); border-radius: 6px; padding: 1.8rem;
  background: #fff; transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
  cursor:pointer;
}
.product-card:hover{ border-color: var(--blue); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(16,24,32,0.06); }
.product-card img{ width:100%; height:190px; object-fit:cover; border-radius:4px; margin-bottom:1.2rem; background: var(--paper-dim); }
.product-card h3{ font-size:1.2rem; line-height:1.3; }
.product-card .sku{ font-family:var(--mono); font-size:0.66rem; color: var(--steel); letter-spacing:0.06em; text-transform:uppercase; }
.product-card p{ margin-top:0.7rem; font-size:0.92rem; line-height:1.6; color: var(--steel); }
.product-card .more{ display:inline-flex; align-items:center; gap:0.4rem; margin-top:1rem; font-size:0.78rem; font-family:var(--mono); color: var(--blue); }

/* ---------- service rows ---------- */
.service-row{
  display:grid; grid-template-columns: 56px 1fr; gap: 1.4rem;
  padding: 1.8rem 0; border-top: 1px solid var(--line);
}
.service-row .icon{
  width:48px; height:48px; border-radius:8px; background: rgba(15,92,140,0.08);
  display:flex; align-items:center; justify-content:center; color: var(--blue);
  font-family:var(--mono); font-weight:600; font-size:0.95rem;
}
.service-row h3{ font-size:1.2rem; }
.service-row p{ margin-top:0.5rem; color: var(--steel); font-size:0.92rem; line-height:1.65; max-width:58ch; }

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:0.55rem;
  font-family: var(--mono); font-size:0.78rem; letter-spacing:0.05em;
  padding: 0.85rem 1.6rem; border-radius: 4px; text-transform:uppercase;
  border:1px solid currentColor; transition: all .2s ease;
}
.btn--solid{ background: var(--blue); border-color: var(--blue); color: #fff; }
.btn--solid:hover{ background: var(--blue-bright); }
.btn--amber{ background: var(--amber); border-color: var(--amber); color: var(--ink); }
.btn--amber:hover{ background: var(--amber-deep); }
.btn--ghost{ color: var(--ink); }
.btn--ghost:hover{ background: rgba(16,24,32,0.05); }
.section--dark .btn--ghost{ color: var(--paper); }
.section--dark .btn--ghost:hover{ background: rgba(250,250,247,0.1); }

/* ---------- footer ---------- */
footer{ background: var(--ink); color: var(--paper); border-top:1px solid var(--line); padding: 3.2rem 0 2rem; }
.footer-grid{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:2rem; }
.footer-col h4{ font-family:var(--mono); font-size:0.7rem; letter-spacing:0.12em; text-transform:uppercase; color: var(--steel-dim); margin-bottom:1rem; }
.footer-col a, .footer-col p{ display:block; font-size:0.88rem; color: rgba(250,250,247,0.78); margin-bottom:0.55rem; }
.footer-col a:hover{ color: var(--amber); }
.footer-bottom{
  margin-top:3rem; padding-top:1.6rem; border-top:1px solid var(--line-dark);
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:1rem;
  font-size:0.74rem; color: var(--steel-dim);
}

/* ---------- contact form ---------- */
.form-grid{ display:grid; gap:1.2rem; max-width:620px; }
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:1.2rem; }
@media (max-width:640px){ .form-row{ grid-template-columns:1fr; } }
label{ font-family:var(--mono); font-size:0.66rem; letter-spacing:0.1em; text-transform:uppercase; color: var(--steel); display:block; margin-bottom:0.5rem; }
input, textarea{
  width:100%; background:#fff; border:1px solid var(--line-strong);
  border-radius:4px; padding:0.85rem 1rem; color: var(--ink); font-family: var(--sans); font-size:0.92rem;
}
input:focus, textarea:focus{ outline:none; border-color: var(--blue); }
textarea{ resize:vertical; }

/* ---------- detail modal ---------- */
.modal-overlay{
  display:none; position:fixed; inset:0; z-index:200;
  background: rgba(16,24,32,0.65); backdrop-filter: blur(4px);
  align-items:center; justify-content:center; padding: 2rem;
}
.modal-overlay.open{ display:flex; }
.modal-box{
  background: #fff; color: var(--ink); max-width:640px; width:100%;
  max-height:84vh; overflow-y:auto; border-radius:8px; position:relative;
}
.modal-box img{ width:100%; height:260px; object-fit:cover; }
.modal-box input, .modal-box textarea{ background:#fff; border:1px solid var(--line-strong); color: var(--ink); }
.modal-box input:focus, .modal-box textarea:focus{ border-color: var(--blue); }
.modal-box label{ color: var(--steel); }
.modal-body{ padding: 2.1rem; }
.modal-tag{ font-family:var(--mono); font-size:0.7rem; color: var(--blue); text-transform:uppercase; letter-spacing:0.08em; }
.modal-body h3{ font-family:var(--display); font-size:1.6rem; margin-top:0.8rem; color:var(--ink); }
.modal-body p{ margin-top:1rem; color: var(--steel); line-height:1.7; white-space:pre-line; font-size:0.95rem; }
.modal-close{
  position:absolute; top:1rem; right:1rem; width:36px; height:36px;
  border-radius:50%; background:#fff; border:1px solid var(--line-strong);
  display:flex; align-items:center; justify-content:center; cursor:pointer; z-index:2;
}

/* ---------- page transition fade ---------- */
.page-fade{ animation: fadeUp .5s ease-out both; }
@keyframes fadeUp{ from{ opacity:0; transform: translateY(10px); } to{ opacity:1; transform:none; } }

/* utility */
.mt-lg{ margin-top: 3rem; }
.text-center{ text-align:center; }
.flex-between{ display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:1rem; }
.hidden{ display:none !important; }

/* ============================================================
   ADMIN / EDIT MODE — same engine as the research site
   ============================================================ */
.edit-only{ display:none !important; }
body.edit-mode .edit-only{ display:inline-flex !important; }
body.edit-mode .edit-only.block{ display:block !important; }

.admin-trigger{
  font-family: var(--mono); font-size:0.62rem; letter-spacing:0.14em;
  color: var(--steel); border:1px solid var(--line-strong); padding:5px 9px;
  border-radius:3px; background:none; cursor:pointer; text-transform:uppercase;
  transition: color .2s ease, border-color .2s ease;
}
.admin-trigger:hover{ color: var(--ink); border-color: var(--steel); }
.admin-trigger.is-logout{ color:#C0392B; border-color: rgba(192,57,43,0.35); }
.admin-trigger.is-logout:hover{ color:#C0392B; border-color:#C0392B; }

.edit-pencil{
  display:inline-flex; align-items:center; gap:5px;
  font-family: var(--mono); font-size:0.66rem; letter-spacing:0.04em;
  color: var(--blue); background: rgba(15,92,140,0.08);
  border:1px solid rgba(15,92,140,0.3); border-radius:3px;
  padding:4px 9px; cursor:pointer; text-transform:uppercase;
  transition: background .2s ease;
}
.edit-pencil:hover{ background: rgba(15,92,140,0.16); }
.edit-pencil.danger{ color:#C0392B; background: rgba(192,57,43,0.08); border-color: rgba(192,57,43,0.3); }
.edit-pencil.danger:hover{ background: rgba(192,57,43,0.16); }
.section--dark .edit-pencil{ color: var(--amber); background: rgba(232,163,61,0.1); border-color: rgba(232,163,61,0.35); }

.editable-controls{ display:flex; gap:0.5rem; flex-wrap:wrap; margin-top:0.9rem; }
.editable-wrap{ position:relative; }
.editable-img-btn{
  position:absolute; top:10px; right:10px; z-index:3;
  font-family: var(--mono); font-size:0.62rem; text-transform:uppercase;
  background: rgba(16,24,32,0.82); color: #fff; border:1px solid var(--line-dark);
  padding:6px 10px; border-radius:3px; cursor:pointer; letter-spacing:0.05em;
}
.editable-img-btn:hover{ background: rgba(16,24,32,0.95); }

.add-item-btn{
  font-family: var(--mono); font-size:0.7rem; letter-spacing:0.05em;
  color: #fff; background: var(--blue); border:none;
  padding:0.7rem 1.2rem; border-radius:4px; cursor:pointer; text-transform:uppercase;
  margin-top:1.5rem;
}
.add-item-btn:hover{ background: var(--blue-bright); }

.admin-overlay{
  display:none; position:fixed; inset:0; z-index:300;
  background: rgba(16,24,32,0.72); backdrop-filter: blur(4px);
  align-items:center; justify-content:center; padding:1.5rem;
}
.admin-overlay.open{ display:flex; }
.admin-box{
  background: #fff; color: var(--ink); width:100%; max-width:440px;
  border-radius:8px; padding:1.8rem; max-height:88vh; overflow-y:auto;
}
.admin-box.wide{ max-width:600px; }
.admin-box h3{ font-family: var(--display); font-size:1.25rem; color: var(--ink); }
.admin-box .hint{ font-size:0.84rem; color: var(--steel); margin-top:0.4rem; }
.admin-box label{ color: var(--steel); margin-top:1.1rem; }
.admin-box label:first-of-type{ margin-top:1.4rem; }
.admin-box input, .admin-box textarea{ background:#fff; border:1px solid var(--line-strong); color: var(--ink); }
.admin-box input:focus, .admin-box textarea:focus{ border-color: var(--blue); }
.admin-error{ display:none; font-size:0.8rem; color:#C0392B; margin-top:0.7rem; font-family: var(--mono); }
.admin-error.show{ display:block; }
.admin-actions{ display:flex; gap:0.7rem; margin-top:1.6rem; }
.admin-actions .btn{ flex:1; justify-content:center; }
.btn--admin-cancel{ background:none; border:1px solid var(--line-strong); color: var(--steel); }
.btn--admin-cancel:hover{ background: rgba(16,24,32,0.05); }
.btn--admin-confirm{ background: var(--blue); border-color: var(--blue); color:#fff; }
.btn--admin-confirm:hover{ background: var(--blue-bright); }

.save-bar{
  display:none; position:fixed; bottom:0; left:0; width:100%; z-index:290;
  background: var(--ink); color: var(--paper); border-top:1px solid var(--line-dark);
  padding: 1.1rem 6vw; align-items:center; justify-content:space-between;
  gap:1rem; flex-wrap:wrap; box-shadow: 0 -8px 24px rgba(0,0,0,0.12);
}
.save-bar.open{ display:flex; }
.save-status{ font-family: var(--mono); font-size:0.78rem; color: var(--steel-dim); }
.save-status.is-saved{ color: var(--amber); }
.save-bar-actions{ display:flex; gap:0.7rem; }
.btn--discard{ background:none; border:1px solid var(--line-dark); color: var(--paper); }
.btn--discard:hover{ background: rgba(250,250,247,0.08); }
.btn--save{ background: var(--amber); border-color: var(--amber); color: var(--ink); }
.btn--save:hover{ background: var(--amber-deep); }
.btn--save:disabled{ opacity:0.6; cursor:default; }

body.edit-mode{ padding-bottom: 74px; }
@media (max-width:640px){ body.edit-mode{ padding-bottom: 110px; } }