/* ================================================
   OmniTeco – style.css
   Dark tech theme · Blue accent · Responsive
   ================================================ */

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

:root {
  --blue:        #2563eb;
  --blue-light:  #3b82f6;
  --blue-glow:   #60a5fa;
  --blue-dim:    #1d4ed8;
  --cyan:        #06b6d4;
  --bg:          #050a14;
  --bg-2:        #080f1e;
  --bg-card:     #0d1625;
  --bg-card2:    #111827;
  --border:      rgba(59,130,246,.18);
  --border-light:rgba(96,165,250,.12);
  --text:        #e2e8f0;
  --text-muted:  #94a3b8;
  --text-dim:    #64748b;
  --white:       #ffffff;
  --gradient:    linear-gradient(135deg, var(--blue-light), var(--cyan));
  --gradient-bg: linear-gradient(180deg, #050a14 0%, #080f1e 100%);
  --radius:      12px;
  --radius-lg:   20px;
  --shadow:      0 4px 24px rgba(37,99,235,.15);
  --shadow-lg:   0 8px 48px rgba(37,99,235,.25);
  --transition:  .3s cubic-bezier(.4,0,.2,1);
  --font-sans:   'Inter', system-ui, sans-serif;
  --font-display:'Space Grotesk', 'Inter', system-ui, sans-serif;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration: none; }

address { font-style: normal; }

/* ---------- Typography ---------- */
.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-eyebrow {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--blue-light);
  display: block;
  margin-bottom: .75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--white);
  margin-bottom: 1.25rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 560px;
  line-height: 1.75;
}

.body-text {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.body-text strong { color: var(--text); }
.body-text em { color: var(--blue-glow); font-style: normal; }

/* ---------- Layout ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

.section { padding: 7rem 0; position: relative; overflow: hidden; }

.section-grid { display: grid; gap: 3rem; }

.section-header.centered { text-align: center; margin-bottom: 4rem; }
.section-header.centered .section-desc { margin: 0 auto; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.75rem;
  border-radius: 50px;
  font-size: .95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  line-height: 1;
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(37,99,235,.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(37,99,235,.5);
}

.btn-outline {
  background: transparent;
  color: var(--blue-light);
  border: 1.5px solid rgba(59,130,246,.4);
}
.btn-outline:hover {
  background: rgba(59,130,246,.1);
  border-color: var(--blue-light);
  transform: translateY(-2px);
}

.btn-sm { padding: .55rem 1.2rem; font-size: .85rem; }
.btn-full { width: 100%; justify-content: center; }

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: background .3s, box-shadow .3s, padding .3s;
}

.navbar.scrolled {
  background: rgba(5,10,20,.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border);
  padding: .6rem 0;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: .4rem;
  color: var(--white);
}

.brand-icon { font-size: 1.3rem; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--gradient);
  transform: scaleX(0);
  transition: transform var(--transition);
  border-radius: 2px;
}

.nav-links a:hover,
.nav-links a.active { color: var(--white); }
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }

.nav-cta {
  background: var(--gradient) !important;
  color: var(--white) !important;
  padding: .45rem 1.2rem;
  border-radius: 50px;
  font-weight: 600 !important;
}

.nav-cta::after { display: none !important; }

.nav-cta:hover { opacity: .88; transform: translateY(-1px); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: .25rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .35;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(5,10,20,.55) 0%,
    rgba(5,10,20,.35) 40%,
    rgba(5,10,20,.85) 85%,
    var(--bg) 100%
  );
}

.hero-particles {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.particle {
  position: absolute;
  border-radius: 50%;
  background: var(--blue-light);
  animation: floatUp linear infinite;
  opacity: 0;
}

@keyframes floatUp {
  0%   { transform: translateY(0) scale(1);   opacity: 0; }
  10%  { opacity: .6; }
  90%  { opacity: .2; }
  100% { transform: translateY(-120vh) scale(.4); opacity: 0; }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 8rem 1.5rem 4rem;
  max-width: 820px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .4rem 1rem;
  border-radius: 50px;
  background: rgba(37,99,235,.15);
  border: 1px solid rgba(59,130,246,.3);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--blue-glow);
  margin-bottom: 1.75rem;
  text-transform: uppercase;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.5); opacity: .5; }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 900;
  line-height: 1.0;
  margin-bottom: 1.5rem;
  display: block;
}

.title-line {
  display: block;
  color: var(--white);
}

.title-line.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.stat-pill {
  background: rgba(13,22,37,.75);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: .9rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .2rem;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  min-width: 120px;
}

.stat-pill strong {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
}

.stat-pill sup {
  font-size: .75rem;
  vertical-align: top;
  margin-top: .2rem;
  color: var(--blue-glow);
}

.stat-pill span {
  font-size: .75rem;
  color: var(--text-muted);
  letter-spacing: .04em;
}

.hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

.hero-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .5rem;
  font-size: .7rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.scroll-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue-light);
  animation: scrollBounce 1.8s infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(8px); opacity: .3; }
}

/* ---------- About ---------- */
.about-section { background: var(--bg-2); }

.about-grid { grid-template-columns: 1fr 1fr; align-items: center; }

.about-pillars { margin-top: 2rem; display: flex; flex-direction: column; gap: 1.25rem; }

.pillar {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  transition: border-color var(--transition), transform var(--transition);
}

.pillar:hover { border-color: var(--border); transform: translateX(4px); }

.pillar-icon { font-size: 1.4rem; flex-shrink: 0; margin-top: .15rem; }

.pillar strong { font-size: .95rem; color: var(--white); display: block; margin-bottom: .2rem; }
.pillar p { font-size: .85rem; color: var(--text-muted); margin: 0; }

.about-visual { position: relative; }

.about-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}

.about-img-wrap img { width: 100%; }

.about-badge {
  position: absolute;
  bottom: 1.5rem;
  right: 1.5rem;
  background: rgba(5,10,20,.85);
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: .75rem 1.25rem;
  border-radius: var(--radius);
  text-align: center;
}

.ab-number {
  display: block;
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.ab-label { font-size: .7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .1em; }

/* ---------- Technology ---------- */
.tech-section {
  background: var(--bg);
  position: relative;
}

.tech-bg-deco {
  position: absolute;
  top: 0; right: 0;
  width: 45%;
  opacity: .08;
  pointer-events: none;
  z-index: 0;
}

.tech-bg-deco img { width: 100%; }

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

.tech-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.tech-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.tech-card:hover {
  border-color: rgba(59,130,246,.4);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.tech-card.featured {
  grid-column: 1;
  background: linear-gradient(135deg, rgba(37,99,235,.12), rgba(6,182,212,.08));
  border-color: rgba(59,130,246,.35);
}

.tech-card-glow {
  position: absolute;
  top: -50px; right: -50px;
  width: 180px; height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,.25), transparent 70%);
  pointer-events: none;
}

.tc-icon { font-size: 2rem; margin-bottom: 1rem; }

.tech-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: .6rem;
}

.tech-card p {
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin: 0;
}

.tech-card p strong { color: var(--blue-glow); }

.tech-spec-row {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem 2.5rem;
}

.spec-item { display: flex; flex-direction: column; align-items: center; gap: .3rem; }

.spec-val {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1;
}

.spec-label { font-size: .8rem; color: var(--text-muted); letter-spacing: .05em; }

.spec-divider {
  width: 1px;
  height: 60px;
  background: var(--border);
  flex-shrink: 0;
}

/* ---------- Products ---------- */
.products-section { background: var(--bg-2); }

.product-tabs {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 3rem;
}

.tab-btn {
  padding: .55rem 1.4rem;
  border-radius: 50px;
  border: 1.5px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn:hover { border-color: var(--blue-light); color: var(--white); }

.tab-btn.active {
  background: var(--gradient);
  border-color: transparent;
  color: var(--white);
  font-weight: 700;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  border-color: rgba(59,130,246,.35);
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.product-card[style*="display: none"] { display: none !important; }

.pc-img-wrap {
  position: relative;
  height: 220px;
  overflow: hidden;
  background: #0a1120;
}

.pc-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

.product-card:hover .pc-img-wrap img { transform: scale(1.05); }

.pc-badge {
  position: absolute;
  top: .75rem; right: .75rem;
  background: var(--gradient);
  color: var(--white);
  font-size: .7rem;
  font-weight: 700;
  padding: .25rem .65rem;
  border-radius: 50px;
  letter-spacing: .05em;
}

.pc-badge.new { background: linear-gradient(135deg, #059669, #10b981); }

.pc-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: .6rem;
}

.pc-cat {
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--blue-light);
}

.pc-body h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.3;
}

.pc-body p {
  font-size: .875rem;
  color: var(--text-muted);
  line-height: 1.65;
  flex: 1;
}

.pc-specs {
  background: rgba(255,255,255,.03);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-light);
  margin: .5rem 0;
}

.ps-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: .45rem .8rem;
  border-bottom: 1px solid var(--border-light);
  font-size: .8rem;
}

.ps-row:last-child { border-bottom: none; }

.ps-row span { color: var(--text-dim); }
.ps-row strong { color: var(--text); font-weight: 600; }

.accessories-note {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  gap: 2rem;
  align-items: center;
  overflow: hidden;
  padding: 0;
}

.acc-img {
  width: 280px;
  height: 200px;
  object-fit: cover;
  flex-shrink: 0;
}

.acc-text {
  padding: 2rem 2rem 2rem 0;
}

.acc-text h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: .6rem;
}

.acc-text p {
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.acc-text p strong { color: var(--text); }

/* ---------- Patents ---------- */
.patents-section { background: var(--bg); }

.patents-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.cert-list { display: flex; flex-direction: column; gap: .9rem; margin: 1.5rem 0 2rem; }

.cert-item {
  display: flex;
  align-items: flex-start;
  gap: .9rem;
  padding: .85rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  transition: border-color var(--transition), transform var(--transition);
}

.cert-item:hover { border-color: rgba(59,130,246,.35); transform: translateX(4px); }

.cert-icon { font-size: 1.2rem; flex-shrink: 0; }

.cert-item strong { font-size: .95rem; color: var(--white); display: block; }
.cert-item p { font-size: .85rem; color: var(--text-muted); margin: 0; }

.patent-counter {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: .5rem;
}

.pcount-item { display: flex; flex-direction: column; gap: .25rem; }

.pcount-item strong {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
}

.pcount-item span { font-size: .8rem; color: var(--text-muted); letter-spacing: .05em; }

.patents-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}

.patents-img img { width: 100%; }

/* ---------- Applications ---------- */
.apps-section { background: var(--bg-2); }

.apps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.app-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.app-card:hover {
  border-color: rgba(59,130,246,.35);
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.app-icon { font-size: 2.5rem; margin-bottom: 1.25rem; }

.app-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: .75rem;
}

.app-card > p {
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.app-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.app-card li {
  font-size: .85rem;
  color: var(--text-muted);
  padding-left: 1.1rem;
  position: relative;
}

.app-card li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--blue-light);
  font-weight: 700;
}

/* ---------- Contact ---------- */
.contact-section { background: var(--bg); }

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 3rem;
  align-items: start;
}

.contact-cards { display: flex; flex-direction: column; gap: 1.5rem; }

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}

.primary-card { border-color: rgba(59,130,246,.3); }

.cc-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--white);
  margin-bottom: 1rem;
}

.cc-info { margin-bottom: 1.25rem; }

.cc-info strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: .2rem;
}

.cc-info span { font-size: .85rem; color: var(--text-muted); }

.cc-actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-bottom: 1rem; }

.cc-detail {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  font-size: .85rem;
  color: var(--text-dim);
  padding-top: 1rem;
  border-top: 1px solid var(--border-light);
}

.address-card { text-align: left; }

.cc-icon { font-size: 1.5rem; margin-bottom: .75rem; }

.address-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: .75rem;
}

.address-card address {
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.9;
}

.company-full-name {
  margin-top: .75rem;
  font-size: .8rem;
  color: var(--text-dim);
  font-weight: 500;
}

/* Form */
.contact-form-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem 2.25rem;
}

.contact-form h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 1.5rem;
}

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

.form-group { display: flex; flex-direction: column; gap: .4rem; margin-bottom: .9rem; }

.form-group label {
  font-size: .82rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: .04em;
}

.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255,255,255,.04);
  border: 1.5px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: .9rem;
  font-family: var(--font-sans);
  padding: .65rem .9rem;
  transition: border-color var(--transition);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-dim); }

.form-group select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2394a3b8' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right .75rem center; padding-right: 2.5rem; }

.form-group select option { background: var(--bg-card2); color: var(--text); }

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--blue-light); background: rgba(37,99,235,.06); }

.form-group textarea { resize: vertical; line-height: 1.6; }

.form-note { font-size: .78rem; color: var(--text-dim); text-align: center; margin-top: .75rem; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-top: .75rem;
  max-width: 280px;
}

.footer-logo { font-size: 1.15rem; margin-bottom: .5rem; display: inline-flex; }

.footer-socials {
  display: flex;
  gap: .75rem;
  margin-top: 1.25rem;
}

.footer-socials a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-socials a:hover {
  background: var(--gradient);
  border-color: transparent;
  color: var(--white);
  transform: translateY(-2px);
}

.footer-col h4 {
  font-size: .85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--text);
  margin-bottom: 1.25rem;
}

.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: .6rem; }

.footer-col li a,
.footer-col li span {
  font-size: .88rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

.footer-col li a:hover { color: var(--white); }

.footer-bottom {
  border-top: 1px solid var(--border-light);
  padding-top: 1.5rem;
  text-align: center;
  font-size: .82rem;
  color: var(--text-dim);
}

.footer-bottom a { color: var(--blue-light); }
.footer-bottom a:hover { color: var(--white); }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--bg-card);
  border: 1px solid rgba(59,130,246,.4);
  border-radius: var(--radius);
  color: var(--text);
  padding: .9rem 1.5rem;
  font-size: .9rem;
  box-shadow: var(--shadow-lg);
  transform: translateY(120%);
  opacity: 0;
  transition: var(--transition);
  z-index: 9999;
  max-width: 340px;
}

.toast.show { transform: translateY(0); opacity: 1; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-visual { order: -1; }
  .about-img-wrap img { max-height: 340px; object-fit: cover; }
  .patents-layout { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .footer-brand { grid-column: 1 / -1; }
  .tech-cards { grid-template-columns: repeat(2, 1fr); }
  .tech-card.featured { grid-column: 1 / -1; }
  .accessories-note { flex-direction: column; }
  .acc-img { width: 100%; height: 240px; }
  .acc-text { padding: 1.5rem; }
}

@media (max-width: 768px) {
  .section { padding: 5rem 0; }

  .nav-links {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 100vh;
    background: rgba(5,10,20,.97);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2.5rem;
    z-index: 999;
  }

  .nav-links.open { display: flex; }

  .nav-links a { font-size: 1.2rem; }

  .nav-toggle { display: flex; z-index: 1001; }
  .nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  .tech-cards { grid-template-columns: 1fr; }
  .tech-card.featured { grid-column: 1; }
  .tech-spec-row { gap: 1.5rem; }
  .spec-divider { display: none; }

  .apps-grid { grid-template-columns: 1fr; }

  .hero-title { font-size: clamp(2.5rem, 9vw, 4rem); }

  .form-row { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand { grid-column: 1; }
}

@media (max-width: 480px) {
  .products-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; align-items: center; }
  .stat-pill { min-width: 200px; }
  .patent-counter { gap: 1rem; }
}