/* ============================================================
   Focus BioLabs - Modern Website Stylesheet
   Clean, professional laboratory design
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --navy: #0f2b46;
  --navy-light: #1a3d5c;
  --navy-dark: #0a1f33;
  --teal: #0d9488;
  --teal-light: #14b8a6;
  --teal-dark: #0f766e;
  --orange: #f97316;
  --orange-dark: #ea580c;
  --orange-light: #fb923c;
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --font-sans: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
  --shadow-sm: 0 1px 2px rgba(15, 43, 70, 0.05);
  --shadow: 0 4px 12px rgba(15, 43, 70, 0.08);
  --shadow-lg: 0 10px 30px rgba(15, 43, 70, 0.12);
  --shadow-xl: 0 20px 50px rgba(15, 43, 70, 0.15);
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--gray-700);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--teal);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--orange);
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--navy);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.15rem; }

p {
  margin-bottom: 1rem;
  color: var(--gray-600);
}

/* ---------- Layout ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--gray-50);
}

.section-dark {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 60%, var(--navy-light) 100%);
  color: var(--white);
}

.section-dark h2,
.section-dark h3 {
  color: var(--white);
}

.section-dark p {
  color: rgba(255, 255, 255, 0.8);
}

/* ---------- Section Headers ---------- */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 56px;
}

.section-header .eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--orange);
  margin-bottom: 12px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--gray-500);
}

.section-dark .section-header p {
  color: rgba(255, 255, 255, 0.7);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  line-height: 1.4;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--orange);
  color: var(--white);
  border-color: var(--orange);
}

.btn-primary:hover {
  background: var(--orange-dark);
  border-color: var(--orange-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(249, 115, 22, 0.35);
}

.btn-secondary {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
}

.btn-secondary:hover {
  background: var(--teal);
  border-color: var(--teal);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
  background: var(--white);
  color: var(--navy);
  border-color: var(--white);
}

.btn-outline-dark {
  background: transparent;
  color: var(--navy);
  border-color: var(--navy);
}

.btn-outline-dark:hover {
  background: var(--navy);
  color: var(--white);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.05rem;
}

/* ---------- Header / Navigation ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  line-height: 0;
}

.site-logo img {
  height: 88px;
  width: auto;
  max-width: none;
  display: block;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav a {
  display: block;
  padding: 8px 14px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--gray-700);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--orange);
  background: var(--gray-50);
}

.nav-cta {
  margin-left: 12px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 50%, var(--navy-light) 100%);
  overflow: hidden;
  padding-top: 84px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 15% 50%, rgba(13, 148, 136, 0.18) 0%, transparent 50%),
    radial-gradient(ellipse at 85% 20%, rgba(249, 115, 22, 0.12) 0%, transparent 45%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 80px 24px;
  text-align: center;
}

.hero .eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--teal-light);
  margin-bottom: 20px;
  padding: 6px 18px;
  border: 1px solid rgba(13, 148, 136, 0.3);
  border-radius: 999px;
  background: rgba(13, 148, 136, 0.08);
}

.hero h1 {
  color: var(--white);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.1;
}

.hero .subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: rgba(255, 255, 255, 0.8);
  font-weight: 400;
  max-width: 640px;
  margin: 0 auto 36px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Page Hero (inner pages) ---------- */
.page-hero {
  position: relative;
  padding: 140px 0 80px;
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 60%, var(--navy-light) 100%);
  text-align: center;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(13, 148, 136, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero .eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--teal-light);
  margin-bottom: 16px;
}

.page-hero h1 {
  color: var(--white);
  margin-bottom: 16px;
}

.page-hero p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ---------- About / Intro Section ---------- */
.about-layout {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 56px;
  align-items: start;
}

.about-text .eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--orange);
  margin-bottom: 12px;
}

.about-text h2 {
  margin-bottom: 20px;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.about-text p {
  font-size: 1.02rem;
  margin-bottom: 16px;
  color: var(--gray-600);
  line-height: 1.8;
}

.about-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.about-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: var(--transition);
}

.about-card:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow);
  border-color: var(--teal-light);
}

.about-card-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--teal), var(--teal-dark));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}

.about-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 4px;
}

.about-card-desc {
  font-size: 0.9rem;
  color: var(--gray-500);
  line-height: 1.5;
}

/* ---------- Cards Grid ---------- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.cards-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.cards-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--teal-light);
}

.card-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--teal) 0%, var(--teal-dark) 100%);
  border-radius: var(--radius);
  margin-bottom: 20px;
  font-size: 1.5rem;
  color: var(--white);
}

.card h3 {
  margin-bottom: 12px;
  font-size: 1.2rem;
}

.card p {
  font-size: 0.95rem;
  color: var(--gray-500);
  margin-bottom: 0;
}

/* ---------- Instrument Cards ---------- */
.instrument-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--navy);
  height: 260px;
  display: flex;
  align-items: flex-end;
  transition: var(--transition);
}

.instrument-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.instrument-card .instrument-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  opacity: 0.25;
}

.instrument-card .instrument-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(transparent 30%, rgba(10, 31, 51, 0.9) 100%);
}

.instrument-card .instrument-info {
  position: relative;
  z-index: 1;
  padding: 28px;
  width: 100%;
}

.instrument-card h3 {
  color: var(--white);
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.instrument-card p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* Instrument color variants */
.instrument-card.navy { background: linear-gradient(135deg, var(--navy-dark), var(--navy-light)); }
.instrument-card.teal { background: linear-gradient(135deg, var(--teal-dark), var(--teal-light)); }
.instrument-card.orange { background: linear-gradient(135deg, var(--orange-dark), var(--orange-light)); }
.instrument-card.slate { background: linear-gradient(135deg, var(--gray-700), var(--gray-500)); }

/* ---------- Testimonials ---------- */
.testimonial-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  height: 100%;
  position: relative;
  transition: var(--transition);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.testimonial-card::before {
  content: '\201C';
  position: absolute;
  top: 16px;
  right: 28px;
  font-size: 4rem;
  color: var(--orange);
  opacity: 0.15;
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-text {
  font-size: 0.98rem;
  color: var(--gray-600);
  line-height: 1.75;
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--teal), var(--navy));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.testimonial-author .name {
  font-weight: 700;
  color: var(--navy);
  font-size: 0.95rem;
}

.testimonial-author .role {
  font-size: 0.82rem;
  color: var(--gray-500);
}

/* ---------- CTA Section ---------- */
.cta-section {
  position: relative;
  padding: 80px 0;
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 100%);
  text-align: center;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 50% 50%, rgba(249, 115, 22, 0.1) 0%, transparent 60%);
  pointer-events: none;
}

.cta-section .container {
  position: relative;
  z-index: 1;
}

.cta-section h2 {
  color: var(--white);
  margin-bottom: 16px;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 32px;
}

.cta-features {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.cta-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.95rem;
  font-weight: 500;
}

.cta-feature .check {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--teal);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 0.75rem;
  flex-shrink: 0;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand img {
  height: 48px;
  margin-bottom: 20px;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 0;
}

.footer-col h4 {
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.92rem;
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--teal-light);
  padding-left: 4px;
}

.footer-contact li {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
}

.footer-contact .icon {
  color: var(--teal-light);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.85rem;
  margin-bottom: 0;
}

/* ---------- Content Pages ---------- */
.content-section {
  padding: 80px 0;
}

.content-wrapper {
  max-width: 860px;
  margin: 0 auto;
}

.content-wrapper h2 {
  margin: 40px 0 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--gray-100);
}

.content-wrapper h2:first-child {
  margin-top: 0;
}

.content-wrapper h3 {
  margin: 28px 0 12px;
  color: var(--navy-light);
}

.content-wrapper ul {
  margin-bottom: 20px;
  padding-left: 0;
}

.content-wrapper ul li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 10px;
  color: var(--gray-600);
  line-height: 1.7;
}

.content-wrapper ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  background: var(--teal);
  border-radius: 50%;
}

.analyte-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 24px 0;
}

.analyte-item {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  font-size: 0.92rem;
  color: var(--gray-700);
  font-weight: 500;
  transition: var(--transition);
}

.analyte-item:hover {
  border-color: var(--teal-light);
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

/* ---------- Team Section ---------- */
.team-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.team-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}

.team-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.team-header {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  padding: 32px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.team-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--teal), var(--teal-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.6rem;
  font-weight: 700;
  flex-shrink: 0;
  border: 3px solid rgba(255,255,255,0.2);
}

.team-header h3 {
  color: var(--white);
  font-size: 1.25rem;
  margin-bottom: 4px;
}

.team-header .role {
  color: var(--teal-light);
  font-size: 0.88rem;
  font-weight: 600;
}

.team-body {
  padding: 24px 32px 32px;
}

.team-body p {
  font-size: 0.95rem;
  color: var(--gray-600);
  line-height: 1.75;
  margin-bottom: 0;
}

/* ---------- Contact Section ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.contact-info-card {
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  padding: 36px;
  border: 1px solid var(--gray-200);
}

.contact-info-card h3 {
  margin-bottom: 24px;
  color: var(--navy);
}

.contact-detail {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  align-items: flex-start;
}

.contact-detail:last-child {
  margin-bottom: 0;
}

.contact-detail .icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--white);
  border: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--teal);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-detail .label {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-500);
  margin-bottom: 4px;
}

.contact-detail .value {
  font-size: 0.98rem;
  color: var(--gray-700);
  font-weight: 500;
  line-height: 1.6;
}

.contact-form-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
}

.contact-form-card h3 {
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 8px;
}

.form-group label .required {
  color: var(--orange);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  color: var(--gray-800);
  background: var(--white);
  transition: var(--transition);
  font-family: var(--font-sans);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.12);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* ---------- Research Links ---------- */
.research-category {
  margin-bottom: 48px;
}

.research-category h3 {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--gray-100);
}

.research-category h3 .cat-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--teal), var(--teal-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1rem;
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.link-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  text-decoration: none;
}

.link-item:hover {
  background: var(--white);
  border-color: var(--teal-light);
  box-shadow: var(--shadow-sm);
  transform: translateX(4px);
}

.link-item .link-icon {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--teal);
  font-size: 0.85rem;
  flex-shrink: 0;
}

.link-item .link-text {
  flex: 1;
}

.link-item .link-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 2px;
}

.link-item .link-desc {
  font-size: 0.8rem;
  color: var(--gray-500);
}

.link-item .arrow {
  color: var(--gray-400);
  font-size: 0.9rem;
  transition: var(--transition);
}

.link-item:hover .arrow {
  color: var(--orange);
  transform: translateX(4px);
}

/* ---------- Badge ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(13, 148, 136, 0.1);
  color: var(--teal-dark);
  border: 1px solid rgba(13, 148, 136, 0.2);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
}

.badge.orange {
  background: rgba(249, 115, 22, 0.1);
  color: var(--orange-dark);
  border-color: rgba(249, 115, 22, 0.2);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .cards-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .about-layout { gap: 40px; }
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .content-section { padding: 56px 0; }

  .nav-toggle { display: flex; }

  .main-nav {
    position: fixed;
    top: 84px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 20px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow-lg);
    transform: translateY(-120%);
    transition: transform 0.3s ease;
    z-index: 999;
  }

  .main-nav.open {
    transform: translateY(0);
  }

  .main-nav a {
    padding: 12px 16px;
    width: 100%;
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 12px;
    width: 100%;
  }

  .nav-cta .btn {
    width: 100%;
  }

  .about-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .cards-grid,
  .cards-grid-2,
  .cards-grid-4 {
    grid-template-columns: 1fr;
  }

  .team-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .analyte-grid { grid-template-columns: 1fr; }
  .link-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .hero { min-height: 480px; }
  .hero-inner { padding: 60px 24px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .btn { width: 100%; max-width: 280px; }

  .about-card:hover { transform: none; }
  .cta-features { flex-direction: column; align-items: center; gap: 16px; }

  .page-hero { padding: 120px 0 56px; }

  .header-inner { height: 68px; }
  .site-logo img { height: 54px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .header-inner { padding: 0 16px; height: 60px; }
  .site-logo img { height: 48px; }
  .card { padding: 24px; }
  .contact-form-card, .contact-info-card { padding: 24px; }
}