/* ── PrecisionTemp Sensors – Shared Stylesheet ── */
:root {
  --bg: #0e1118;
  --surf: #161b27;
  --surf2: #1e2436;
  --surf3: #252d42;
  --border: #272f47;
  --border-h: #374060;
  --blue: #1e8fff;
  --blue-l: #4db0ff;
  --blue-dk: #0d5fa8;
  --blue-glow: rgba(30,143,255,0.13);
  --text: #e2e8f5;
  --muted: #8896b0;
  --dim: #4a5870;
  --green: #22c55e;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-l); }

/* ── NAV ── */
.nav {
  background: var(--surf);
  border-bottom: 1px solid var(--border);
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-logo {
  color: var(--blue);
  font-weight: 900;
  font-size: 0.93rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-shrink: 0;
  text-decoration: none;
}
.nav-logo:hover { color: var(--blue-l); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
}

.nav-link {
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-weight: 600;
  padding: 0 0.55rem;
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.15s;
  height: 56px;
  display: flex;
  align-items: center;
}
.nav-link:hover, .nav-link.active { color: var(--blue); }

.nav-dropdown {
  position: relative;
}
.nav-dropdown-toggle {
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-weight: 600;
  padding: 0 0.55rem;
  white-space: nowrap;
  cursor: pointer;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 0.2rem;
  transition: color 0.15s;
}
.nav-dropdown:hover .nav-dropdown-toggle { color: var(--blue-l); }

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 56px;
  left: 0;
  background: var(--surf);
  border: 1px solid var(--border);
  border-radius: 6px;
  min-width: 215px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
  z-index: 200;
  overflow: hidden;
}
.nav-dropdown:hover .nav-dropdown-menu { display: block; }

.nav-dropdown-item {
  display: block;
  padding: 0.75rem 1.1rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: background 0.12s;
}
.nav-dropdown-item:last-child { border-bottom: none; }
.nav-dropdown-item:hover { background: var(--surf2); color: var(--blue); }

.nav-cart-btn {
  color: var(--blue);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-weight: 700;
  padding: 0 0.55rem;
  cursor: pointer;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  background: none;
  border: none;
  height: 56px;
}
.nav-cart-btn:hover { color: var(--blue-l); }

.cart-badge {
  background: var(--blue);
  color: #fff;
  border-radius: 50%;
  font-size: 0.58rem;
  width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--blue);
  color: #fff;
  border: 1px solid var(--blue);
  border-radius: 5px;
  padding: 0.6rem 1.4rem;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all 0.18s;
  text-decoration: none;
}
.btn:hover { background: var(--blue-l); border-color: var(--blue-l); color: #fff; }
.btn.outline { background: transparent; color: var(--blue); }
.btn.outline:hover { background: var(--blue-glow); }
.btn.full { width: 100%; }
.btn.sm { padding: 0.35rem 0.9rem; font-size: 0.8rem; }

/* ── TAG FILTERS ── */
.tag-row { display: flex; gap: 0.45rem; flex-wrap: wrap; margin-bottom: 2rem; }
.tag {
  background: var(--surf2);
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 0.3rem 0.9rem;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.tag:hover { border-color: var(--blue); color: var(--blue-l); }
.tag.active { background: var(--blue); color: #fff; border-color: var(--blue); }

/* ── PRODUCT GRID ── */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(285px, 1fr));
  gap: 1.1rem;
}

.product-card {
  background: var(--surf);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.3rem;
  cursor: pointer;
  transition: all 0.18s;
}
.product-card:hover {
  border-color: var(--blue);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(30,143,255,0.12);
  background: var(--surf2);
}

.card-sub {
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  color: var(--blue);
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 0.3rem;
}
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.3rem;
}
.card-name {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text);
}
.card-type-badge {
  font-size: 0.62rem;
  background: var(--surf3);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.1rem 0.4rem;
  color: var(--dim);
  white-space: nowrap;
  margin-left: 0.5rem;
  flex-shrink: 0;
}
.card-full { color: var(--muted); font-size: 0.8rem; font-weight: 600; line-height: 1.35; margin-bottom: 0.35rem; }
.card-desc { color: var(--dim); font-size: 0.78rem; line-height: 1.65; margin-bottom: 0.8rem; }
.card-footer {
  border-top: 1px solid var(--border);
  padding-top: 0.55rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.card-range { font-size: 0.73rem; color: var(--dim); }
.card-link { font-size: 0.73rem; color: var(--blue); font-weight: 700; }

/* ── PAGE LAYOUT ── */
.page-wrap { max-width: 1100px; margin: 0 auto; padding: 3rem 1.75rem; }

.breadcrumb { margin-bottom: 2rem; font-size: 0.78rem; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--blue); }
.breadcrumb span { color: var(--dim); margin: 0 0.4rem; }
.breadcrumb .current { color: var(--text); }

.page-eyebrow {
  font-size: 0.63rem;
  letter-spacing: 0.16em;
  color: var(--blue);
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 0.4rem;
}
.page-title {
  font-size: 1.85rem;
  font-weight: 900;
  letter-spacing: -0.01em;
  margin-bottom: 0.55rem;
}
.page-desc { color: var(--muted); font-size: 0.93rem; max-width: 640px; line-height: 1.8; margin-bottom: 1.5rem; }

/* ── SPECS TABLE ── */
.specs-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; margin-bottom: 2rem; }
.specs-table tr:nth-child(odd) { background: var(--surf); }
.specs-table tr:nth-child(even) { background: var(--surf2); }
.specs-table tr:first-child td:first-child { border-left: 3px solid var(--blue); }
.specs-table td { padding: 0.65rem 1rem; }
.specs-table td:first-child { color: var(--dim); font-weight: 700; width: 38%; }
.specs-table td:last-child { color: var(--text); }

/* ── APP CHIPS ── */
.app-chips { display: flex; gap: 0.45rem; flex-wrap: wrap; }
.app-chip {
  background: var(--surf2);
  border: 1px solid var(--border);
  padding: 0.28rem 0.7rem;
  border-radius: 20px;
  font-size: 0.78rem;
  color: var(--muted);
}

/* ── FORM INPUTS ── */
.form-group { margin-bottom: 0.75rem; }
.form-label {
  display: block;
  font-size: 0.65rem;
  color: var(--dim);
  margin-bottom: 0.22rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  background: var(--surf2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.6rem 0.85rem;
  color: var(--text);
  font-size: 0.88rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}
.form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--blue); }
.form-textarea { resize: vertical; }

/* ── CARDS (capabilities/cal) ── */
.info-card {
  background: var(--surf);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.4rem;
}
.info-card-icon { font-size: 2rem; margin-bottom: 0.75rem; }
.info-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 0.45rem; }
.info-card p { font-size: 0.83rem; color: var(--muted); line-height: 1.7; margin-bottom: 0.85rem; }
.info-card ul { padding-left: 1.1rem; }
.info-card li { font-size: 0.78rem; color: var(--dim); margin-bottom: 0.22rem; line-height: 1.55; }

/* ── CERT TAGS ── */
.cert-row { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.cert-tag {
  background: var(--surf);
  border: 1px solid var(--border);
  padding: 0.25rem 0.65rem;
  border-radius: 20px;
  font-size: 0.77rem;
  color: var(--muted);
}

/* ── HERO ── */
.hero {
  background: linear-gradient(135deg, #090c12 0%, #161b27 55%, #071020 100%);
  padding: 5.5rem 2rem 4.5rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 22% 50%, rgba(30,143,255,0.1) 0%, transparent 52%),
    radial-gradient(circle at 78% 20%, rgba(0,212,255,0.05) 0%, transparent 44%);
}
.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image:
    linear-gradient(rgba(30,143,255,1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30,143,255,1) 1px, transparent 1px);
  background-size: 48px 48px;
}
.hero-inner { position: relative; max-width: 580px; margin: 0 auto; }
.hero-eyebrow { font-size: 0.63rem; letter-spacing: 0.22em; color: var(--blue); text-transform: uppercase; font-weight: 700; margin-bottom: 1rem; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 900; line-height: 1.09; margin-bottom: 1.25rem; letter-spacing: -0.02em; }
.hero h1 em { color: var(--blue); font-style: normal; }
.hero p { font-size: 1rem; color: var(--muted); line-height: 1.85; margin-bottom: 2.5rem; }
.hero-btns { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ── CERT BAR ── */
.cert-bar {
  background: var(--surf);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 1.35rem 2rem;
  text-align: center;
}
.cert-bar-inner { display: flex; justify-content: center; gap: 2rem; flex-wrap: wrap; }
.cert-bar-item { color: var(--muted); font-size: 0.8rem; font-weight: 600; }

/* ── FOOTER ── */
footer {
  background: var(--surf);
  border-top: 1px solid var(--border);
  padding: 1.25rem;
  text-align: center;
  color: var(--dim);
  font-size: 0.77rem;
}

/* ── PRODUCT HOME GRID ── */
.product-home-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(195px, 1fr));
  gap: 1rem;
}
.product-home-card {
  background: var(--surf);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  cursor: pointer;
  transition: all 0.18s;
  text-decoration: none;
  display: block;
}
.product-home-card:hover {
  border-color: var(--blue);
  transform: translateY(-3px);
  box-shadow: 0 6px 18px rgba(30,143,255,0.12);
  background: var(--surf2);
}
.product-home-card-icon { font-size: 1.75rem; margin-bottom: 0.55rem; }
.product-home-card h3 { font-size: 0.88rem; font-weight: 700; margin-bottom: 0.35rem; }
.product-home-card-count { font-size: 0.75rem; color: var(--blue); font-weight: 600; }

/* ── SECTION HEADER ── */
.section-eyebrow { font-size: 0.63rem; letter-spacing: 0.2em; color: var(--blue); text-transform: uppercase; font-weight: 700; margin-bottom: 0.5rem; }
.section-title { font-size: 1.75rem; font-weight: 800; letter-spacing: -0.01em; }
.section-header { text-align: center; margin-bottom: 2.75rem; }

/* ── STANDARD TILES ── */
.std-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
}
.std-tile {
  background: var(--surf2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.9rem;
}
.std-tile-name { font-weight: 800; font-size: 0.9rem; color: var(--blue); margin-bottom: 0.3rem; }
.std-tile-desc { font-size: 0.78rem; color: var(--muted); line-height: 1.55; }

/* ── QUOTE PANEL ── */
.quote-panel {
  background: var(--surf);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  position: sticky;
  top: 72px;
}
.qty-row { display: flex; align-items: center; gap: 0.5rem; }
.qty-btn {
  background: var(--surf2);
  border: 1px solid var(--border);
  color: var(--text);
  width: 34px;
  height: 34px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.15s;
}
.qty-btn:hover { border-color: var(--blue); }
.qty-val { font-weight: 800; font-size: 1.1rem; min-width: 2rem; text-align: center; }

/* ── MODAL ── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(0,0,0,0.75);
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--surf);
  border: 1px solid var(--border);
  border-radius: 10px;
  max-width: 720px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 2rem;
  position: relative;
}
.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1.3rem;
  cursor: pointer;
  line-height: 1;
}
.modal-close:hover { color: var(--text); }

/* ── DETAIL LAYOUT ── */
.detail-grid { display: grid; grid-template-columns: 1fr 360px; gap: 3rem; align-items: start; }
@media (max-width: 768px) {
  .detail-grid { grid-template-columns: 1fr; }
  .quote-panel { position: static; }
}

/* ── TWO-COL GRID ── */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 640px) { .two-col { grid-template-columns: 1fr; } }

/* ── GRADIENT CARD ── */
.gradient-card {
  background: linear-gradient(135deg, var(--surf) 0%, var(--surf3) 100%);
  border: 1px solid var(--blue);
  border-radius: 8px;
  padding: 2rem;
}

/* ── CART DRAWER ── */
.cart-drawer {
  position: fixed;
  top: 0;
  right: -440px;
  width: 440px;
  height: 100vh;
  background: var(--surf);
  border-left: 1px solid var(--border);
  z-index: 400;
  display: flex;
  flex-direction: column;
  transition: right 0.3s ease;
  overflow: hidden;
}
.cart-drawer.open { right: 0; }
.cart-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 399;
}
.cart-backdrop.open { display: block; }
.cart-header {
  padding: 1.15rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-shrink: 0;
}
.cart-body { flex: 1; overflow-y: auto; padding: 1.25rem 1.5rem; }
.cart-item {
  background: var(--surf2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.9rem;
  margin-bottom: 0.65rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
}
.cart-item-info { flex: 1; min-width: 0; }
.cart-item-name { font-size: 0.88rem; font-weight: 700; margin-bottom: 0.2rem; }
.cart-item-meta { font-size: 0.78rem; color: var(--muted); }
.cart-item-remove {
  background: none;
  border: none;
  color: var(--dim);
  cursor: pointer;
  font-size: 1rem;
  flex-shrink: 0;
  padding: 0.1rem;
}
.cart-item-remove:hover { color: var(--text); }
.cart-empty { text-align: center; color: var(--muted); padding: 2.5rem 0; }

/* ── SUCCESS STATE ── */
.success-state { text-align: center; padding: 2rem 0; }
.success-icon { font-size: 2.5rem; margin-bottom: 0.75rem; }
.success-state h3 { font-weight: 700; margin-bottom: 0.5rem; }
.success-state p { color: var(--muted); font-size: 0.88rem; }

/* ── DIVIDER LABEL ── */
.divider-label {
  font-size: 0.65rem;
  letter-spacing: 0.13em;
  color: var(--dim);
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 0.8rem;
}

/* ── UTIL ── */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.hidden { display: none !important; }
.text-blue { color: var(--blue); }
.text-muted { color: var(--muted); }
.text-dim { color: var(--dim); }
.fw-700 { font-weight: 700; }
.fw-800 { font-weight: 800; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.small { font-size: 0.82rem; }

@media (max-width: 900px) {
  .nav-links .nav-link:nth-child(n+6) { display: none; }
}
@media (max-width: 640px) {
  .page-wrap { padding: 2rem 1rem; }
  .hero { padding: 3.5rem 1rem 3rem; }
  .product-grid { grid-template-columns: 1fr; }
}