/*
Theme Name: O3 Generators Pro
Theme URI: https://www.o3generators.com/
Author: O3 Generators Engineering & Digital Team
Author URI: https://www.o3generators.com/
Description: Next-generation commercial & residential ozone generator sales, sizing calculator, and technical resource theme crafted in American English for O3 Generators (o3generators.com).
Version: 2.0.0
Requires at least: 6.0
Tested up to: 7.1.4
Requires PHP: 7.4
License: GPL v2 or later
Text Domain: o3generators-pro
*/

:root {
  --o3-navy-950: #050E1B;
  --o3-navy-900: #09192F;
  --o3-navy-800: #0F2744;
  --o3-navy-700: #18385E;
  --o3-cyan-600: #0284C7;
  --o3-cyan-500: #00A3E0;
  --o3-cyan-400: #22D3EE;
  --o3-cyan-100: #E0F6FE;
  --o3-cyan-50: #F0FAFF;
  --o3-teal-600: #0D9488;
  --o3-teal-500: #14B8A6;
  --o3-teal-50: #F0FDFA;
  --o3-amber-500: #F59E0B;
  --o3-amber-100: #FEF3C7;
  --o3-slate-900: #0F172A;
  --o3-slate-700: #334155;
  --o3-slate-600: #475569;
  --o3-slate-500: #64748B;
  --o3-slate-300: #CBD5E1;
  --o3-slate-200: #E2E8F0;
  --o3-slate-100: #F1F5F9;
  --o3-slate-50: #F8FAFC;
  --o3-white: #FFFFFF;
  --o3-radius-sm: 8px;
  --o3-radius-md: 14px;
  --o3-radius-lg: 22px;
  --o3-radius-xl: 30px;
  --o3-shadow-sm: 0 2px 8px rgba(9, 25, 47, 0.05);
  --o3-shadow-md: 0 12px 32px rgba(9, 25, 47, 0.08);
  --o3-shadow-lg: 0 24px 56px rgba(9, 25, 47, 0.14);
  --o3-shadow-glow: 0 12px 34px rgba(0, 163, 224, 0.28);
  --o3-font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --o3-font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --o3-font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
}

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

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

body {
  margin: 0;
  font-family: var(--o3-font-body);
  color: var(--o3-slate-700);
  background-color: var(--o3-white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--o3-font-heading);
  color: var(--o3-slate-900);
  line-height: 1.18;
  letter-spacing: -0.025em;
  margin-top: 0;
}

a {
  color: var(--o3-cyan-600);
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

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

.o3-container {
  width: 100%;
  max-width: 1260px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   TOP UTILITY BAR & STICKY HEADER
   ========================================================================== */
.o3-topbar {
  background: var(--o3-navy-950);
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.82rem;
  padding: 9px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.o3-topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.o3-topbar-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
}

.o3-topbar-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--o3-cyan-400);
  box-shadow: 0 0 10px var(--o3-cyan-400);
}

.o3-topbar-links {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
}

.o3-topbar-links a {
  color: rgba(255, 255, 255, 0.9);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.o3-topbar-links a:hover {
  color: var(--o3-cyan-400);
}

.o3-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.85);
  transition: box-shadow 0.25s ease, background 0.25s ease;
}

.o3-header.is-scrolled {
  box-shadow: 0 10px 30px rgba(9, 25, 47, 0.08);
  background: rgba(255, 255, 255, 0.97);
}

.o3-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
  gap: 24px;
}

.o3-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--o3-slate-900);
  font-family: var(--o3-font-heading);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  flex-shrink: 0;
}

.o3-brand:hover {
  color: var(--o3-slate-900);
}

.o3-brand-text span {
  display: block;
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--o3-cyan-600);
  margin-top: 1px;
}

.o3-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.o3-nav-link {
  padding: 8px 11px;
  border-radius: var(--o3-radius-sm);
  color: var(--o3-slate-700);
  font-weight: 600;
  font-size: 0.89rem;
  white-space: nowrap;
}

.o3-nav-link:hover,
.o3-nav-link.is-active {
  color: var(--o3-cyan-600);
  background: var(--o3-cyan-50);
}

.o3-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.o3-phone-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 13px;
  border-radius: 999px;
  background: var(--o3-slate-100);
  color: var(--o3-slate-900);
  font-weight: 700;
  font-size: 0.86rem;
  font-family: var(--o3-font-heading);
  white-space: nowrap;
}

.o3-phone-pill:hover {
  background: var(--o3-cyan-100);
  color: var(--o3-cyan-600);
}

/* ==========================================================================
   BUTTONS & BADGES
   ========================================================================== */
.o3-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 24px;
  border-radius: 11px;
  font-family: var(--o3-font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.22s ease;
  text-align: center;
  line-height: 1.2;
  white-space: nowrap;
}

.o3-btn-sm {
  padding: 10px 18px;
  font-size: 0.88rem;
  border-radius: 9px;
}

.o3-btn-lg {
  padding: 16px 30px;
  font-size: 1.02rem;
  border-radius: 13px;
}

.o3-btn-primary {
  background: linear-gradient(135deg, var(--o3-cyan-500) 0%, var(--o3-cyan-600) 100%);
  color: var(--o3-white);
  box-shadow: var(--o3-shadow-glow);
}

.o3-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(2, 132, 199, 0.38);
  color: var(--o3-white);
}

.o3-btn-dark {
  background: var(--o3-navy-900);
  color: var(--o3-white);
}

.o3-btn-dark:hover {
  background: var(--o3-navy-800);
  color: var(--o3-white);
  transform: translateY(-2px);
}

.o3-btn-outline-light {
  background: rgba(255, 255, 255, 0.08);
  color: var(--o3-white);
  border-color: rgba(255, 255, 255, 0.24);
  backdrop-filter: blur(8px);
}

.o3-btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: var(--o3-cyan-400);
  color: var(--o3-white);
  transform: translateY(-2px);
}

.o3-btn-outline {
  background: var(--o3-white);
  color: var(--o3-slate-900);
  border-color: var(--o3-slate-300);
}

.o3-btn-outline:hover {
  border-color: var(--o3-cyan-500);
  color: var(--o3-cyan-600);
  background: var(--o3-cyan-50);
}

.o3-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: var(--o3-cyan-50);
  color: var(--o3-cyan-600);
  border: 1px solid rgba(0, 163, 224, 0.2);
  margin-bottom: 16px;
}

.o3-eyebrow-dark {
  background: rgba(34, 211, 238, 0.12);
  color: var(--o3-cyan-400);
  border-color: rgba(34, 211, 238, 0.28);
}

/* Mobile Menu Toggle */
.o3-menu-toggle {
  display: none;
  background: var(--o3-slate-100);
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--o3-slate-900);
}

.o3-mobile-drawer {
  display: none;
  background: var(--o3-white);
  border-bottom: 1px solid var(--o3-slate-200);
  padding: 16px 24px 24px;
}

.o3-mobile-drawer.is-open {
  display: block;
}

.o3-mobile-drawer nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.o3-hero {
  position: relative;
  background: radial-gradient(circle at 82% 20%, rgba(0, 163, 224, 0.26) 0%, transparent 48%),
              radial-gradient(circle at 12% 85%, rgba(20, 184, 166, 0.16) 0%, transparent 42%),
              linear-gradient(160deg, var(--o3-navy-950) 0%, var(--o3-navy-900) 58%, #0C2542 100%);
  color: var(--o3-white);
  padding: 84px 0 72px;
  overflow: hidden;
}

.o3-hero::before {
  content: '';
  position: absolute;
  inset: 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: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 35%, transparent 80%);
  pointer-events: none;
}

.o3-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 54px;
  align-items: center;
}

.o3-hero h1 {
  color: var(--o3-white);
  font-size: clamp(2.35rem, 4.3vw, 3.65rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 22px;
}

.o3-hero h1 .o3-text-gradient {
  background: linear-gradient(90deg, #38BDF8 0%, #5EEAD4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.o3-hero-lead {
  font-size: 1.13rem;
  color: rgba(255, 255, 255, 0.82);
  max-width: 600px;
  margin-bottom: 32px;
  line-height: 1.7;
}

.o3-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 34px;
}

.o3-hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.o3-hero-highlight-item {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.88);
  font-weight: 500;
}

.o3-hero-highlight-item svg {
  color: var(--o3-cyan-400);
  flex-shrink: 0;
}

.o3-hero-visual {
  position: relative;
}

.o3-hero-frame {
  position: relative;
  border-radius: var(--o3-radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 32px 70px rgba(0, 0, 0, 0.45);
  background: var(--o3-navy-800);
}

.o3-hero-frame img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.o3-floating-badge {
  position: absolute;
  background: rgba(9, 25, 47, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 14px;
  padding: 13px 18px;
  color: var(--o3-white);
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.35);
}

.o3-floating-badge-top {
  top: -18px;
  right: -14px;
}

.o3-floating-badge-bottom {
  bottom: -20px;
  left: -16px;
}

.o3-floating-badge strong {
  display: block;
  font-family: var(--o3-font-mono);
  font-size: 1.15rem;
  color: var(--o3-cyan-400);
}

.o3-floating-badge span {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.8);
}

/* ==========================================================================
   STATS / TRUST BAR
   ========================================================================== */
.o3-stats-bar {
  background: var(--o3-white);
  border-bottom: 1px solid var(--o3-slate-200);
  padding: 36px 0;
}

.o3-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.o3-stat-card {
  text-align: center;
  padding: 12px 16px;
  border-right: 1px solid var(--o3-slate-200);
}

.o3-stat-card:last-child {
  border-right: none;
}

.o3-stat-value {
  font-family: var(--o3-font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--o3-navy-900);
  line-height: 1.1;
  margin-bottom: 4px;
}

.o3-stat-value span {
  color: var(--o3-cyan-500);
}

.o3-stat-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--o3-slate-500);
}

/* ==========================================================================
   SECTIONS & HEADINGS
   ========================================================================== */
.o3-section {
  padding: 92px 0;
}

.o3-section-alt {
  background: var(--o3-slate-50);
}

.o3-section-dark {
  background: linear-gradient(180deg, var(--o3-navy-950) 0%, var(--o3-navy-900) 100%);
  color: var(--o3-white);
}

.o3-section-dark h2,
.o3-section-dark h3,
.o3-section-dark h4 {
  color: var(--o3-white);
}

.o3-section-header {
  max-width: 740px;
  margin: 0 auto 56px;
  text-align: center;
}

.o3-section-header h2 {
  font-size: clamp(1.9rem, 3.2vw, 2.75rem);
  font-weight: 800;
  margin-bottom: 16px;
}

.o3-section-header p {
  font-size: 1.08rem;
  color: var(--o3-slate-600);
  margin: 0;
}

.o3-section-dark .o3-section-header p {
  color: rgba(255, 255, 255, 0.76);
}

/* ==========================================================================
   PRODUCT LINEUP CARDS (SALES SHOWCASE)
   ========================================================================== */
.o3-products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.o3-product-card {
  background: var(--o3-white);
  border: 1px solid var(--o3-slate-200);
  border-radius: var(--o3-radius-lg);
  overflow: hidden;
  box-shadow: var(--o3-shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  position: relative;
}

.o3-product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--o3-shadow-lg);
  border-color: rgba(0, 163, 224, 0.45);
}

.o3-product-card.is-featured {
  border: 2px solid var(--o3-cyan-500);
  box-shadow: var(--o3-shadow-md);
}

.o3-product-ribbon {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  background: linear-gradient(135deg, var(--o3-cyan-500), var(--o3-teal-600));
  color: var(--o3-white);
  font-size: 0.74rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 6px 12px;
  border-radius: 999px;
  box-shadow: 0 6px 16px rgba(0, 163, 224, 0.35);
}

.o3-product-media {
  position: relative;
  background: var(--o3-slate-100);
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.o3-product-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.o3-product-card:hover .o3-product-media img {
  transform: scale(1.04);
}

.o3-product-output-pill {
  position: absolute;
  bottom: 14px;
  right: 14px;
  background: rgba(9, 25, 47, 0.88);
  backdrop-filter: blur(8px);
  color: var(--o3-cyan-400);
  font-family: var(--o3-font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 8px;
  border: 1px solid rgba(34, 211, 238, 0.3);
}

.o3-product-body {
  padding: 28px 30px 30px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.o3-product-category {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--o3-cyan-600);
  margin-bottom: 6px;
}

.o3-product-body h3 {
  font-size: 1.48rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.o3-product-desc {
  color: var(--o3-slate-600);
  font-size: 0.96rem;
  margin-bottom: 20px;
}

.o3-spec-chips {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 20px;
  padding: 14px;
  background: var(--o3-slate-50);
  border-radius: var(--o3-radius-md);
  border: 1px solid var(--o3-slate-200);
}

.o3-spec-chip span {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--o3-slate-500);
  font-weight: 600;
}

.o3-spec-chip strong {
  font-family: var(--o3-font-heading);
  font-size: 0.9rem;
  color: var(--o3-slate-900);
}

.o3-product-features {
  list-style: none;
  padding: 0;
  margin: 0 0 26px;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.o3-product-features li {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  font-size: 0.91rem;
  color: var(--o3-slate-700);
}

.o3-product-features li svg {
  color: var(--o3-teal-600);
  flex-shrink: 0;
  margin-top: 3px;
}

.o3-product-actions {
  margin-top: auto;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.o3-product-actions .o3-btn-primary {
  flex: 1;
}

/* ==========================================================================
   INTERACTIVE ROOM SIZING & QUOTE CALCULATOR
   ========================================================================== */
.o3-calc-shell {
  background: var(--o3-white);
  border-radius: var(--o3-radius-xl);
  border: 1px solid var(--o3-slate-200);
  box-shadow: var(--o3-shadow-lg);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
}

.o3-calc-controls {
  padding: 42px 44px;
}

.o3-calc-result {
  background: linear-gradient(165deg, var(--o3-navy-900) 0%, var(--o3-navy-950) 100%);
  color: var(--o3-white);
  padding: 42px 38px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.o3-field-group {
  margin-bottom: 24px;
}

.o3-field-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--o3-slate-900);
  margin-bottom: 9px;
}

.o3-field-value-badge {
  font-family: var(--o3-font-mono);
  font-size: 0.86rem;
  color: var(--o3-cyan-600);
  background: var(--o3-cyan-50);
  padding: 3px 10px;
  border-radius: 6px;
}

.o3-select,
.o3-input,
.o3-textarea {
  width: 100%;
  padding: 13px 16px;
  border-radius: 10px;
  border: 1px solid var(--o3-slate-300);
  font-family: var(--o3-font-body);
  font-size: 0.96rem;
  color: var(--o3-slate-900);
  background: var(--o3-white);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.o3-select:focus,
.o3-input:focus,
.o3-textarea:focus {
  outline: none;
  border-color: var(--o3-cyan-500);
  box-shadow: 0 0 0 3px rgba(0, 163, 224, 0.16);
}

.o3-range {
  width: 100%;
  accent-color: var(--o3-cyan-500);
  height: 8px;
  cursor: pointer;
}

.o3-severity-pills {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.o3-severity-btn {
  padding: 11px 12px;
  border-radius: 10px;
  border: 1px solid var(--o3-slate-300);
  background: var(--o3-white);
  font-family: var(--o3-font-heading);
  font-weight: 700;
  font-size: 0.84rem;
  color: var(--o3-slate-700);
  cursor: pointer;
  transition: all 0.2s ease;
}

.o3-severity-btn.is-active {
  background: var(--o3-cyan-50);
  border-color: var(--o3-cyan-500);
  color: var(--o3-cyan-600);
  box-shadow: 0 0 0 1px var(--o3-cyan-500);
}

.o3-rec-box {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--o3-radius-md);
  padding: 22px;
  margin: 18px 0 22px;
}

.o3-rec-model {
  font-family: var(--o3-font-heading);
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--o3-cyan-400);
  margin-bottom: 6px;
}

.o3-rec-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.o3-rec-metrics span {
  display: block;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.65);
}

.o3-rec-metrics strong {
  font-family: var(--o3-font-mono);
  font-size: 1rem;
  color: var(--o3-white);
}

/* ==========================================================================
   SCIENCE & COMPARISON TABLE
   ========================================================================== */
.o3-science-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 52px;
  align-items: center;
}

.o3-science-card-img {
  border-radius: var(--o3-radius-lg);
  overflow: hidden;
  box-shadow: var(--o3-shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.o3-steps-vertical {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 28px;
}

.o3-step-row {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--o3-slate-50);
  border: 1px solid var(--o3-slate-200);
  padding: 18px 20px;
  border-radius: var(--o3-radius-md);
}

.o3-step-num {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--o3-cyan-500), var(--o3-cyan-600));
  color: var(--o3-white);
  font-family: var(--o3-font-mono);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.o3-table-wrap {
  overflow-x: auto;
  border-radius: var(--o3-radius-lg);
  border: 1px solid var(--o3-slate-200);
  box-shadow: var(--o3-shadow-sm);
  background: var(--o3-white);
}

.o3-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 680px;
}

.o3-table th,
.o3-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--o3-slate-200);
  font-size: 0.93rem;
}

.o3-table thead th {
  background: var(--o3-navy-900);
  color: var(--o3-white);
  font-family: var(--o3-font-heading);
  font-weight: 700;
}

.o3-table thead th.is-highlight {
  background: var(--o3-cyan-600);
}

.o3-table tbody td.is-highlight {
  background: var(--o3-cyan-50);
  font-weight: 600;
  color: var(--o3-slate-900);
}

.o3-table tbody tr:last-child td {
  border-bottom: none;
}

/* ==========================================================================
   INDUSTRY APPLICATION CARDS
   ========================================================================== */
.o3-apps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.o3-app-card {
  background: var(--o3-white);
  border-radius: var(--o3-radius-lg);
  border: 1px solid var(--o3-slate-200);
  overflow: hidden;
  box-shadow: var(--o3-shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
}

.o3-app-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--o3-shadow-md);
}

.o3-app-card-img {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--o3-slate-100);
}

.o3-app-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.o3-app-card:hover .o3-app-card-img img {
  transform: scale(1.05);
}

.o3-app-card-body {
  padding: 24px 26px 26px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.o3-app-card-body h3 {
  font-size: 1.22rem;
  margin-bottom: 10px;
}

.o3-app-card-body p {
  font-size: 0.93rem;
  color: var(--o3-slate-600);
  margin: 0 0 18px;
  flex-grow: 1;
}

.o3-app-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--o3-slate-100);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--o3-cyan-600);
}

/* ==========================================================================
   SAFETY PROTOCOL & WARNING BANNER
   ========================================================================== */
.o3-safety-banner {
  background: linear-gradient(135deg, #FFFBEB 0%, #FEF3C7 100%);
  border: 1px solid #FCD34D;
  border-left: 6px solid var(--o3-amber-500);
  border-radius: var(--o3-radius-md);
  padding: 22px 26px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
  color: #78350F;
}

.o3-safety-banner strong {
  color: #92400E;
  display: block;
  font-family: var(--o3-font-heading);
  font-size: 1.02rem;
  margin-bottom: 4px;
}

/* ==========================================================================
   RESEARCH & REFERENCES CARDS
   ========================================================================== */
.o3-docs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.o3-doc-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--o3-radius-md);
  padding: 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 18px;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.o3-doc-card:hover {
  border-color: var(--o3-cyan-400);
  background: rgba(255, 255, 255, 0.08);
}

.o3-doc-source {
  font-family: var(--o3-font-mono);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--o3-cyan-400);
}

.o3-doc-card h3 {
  font-size: 1.14rem;
  margin: 6px 0 8px;
}

.o3-doc-card p {
  margin: 0;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.75);
}

/* ==========================================================================
   FAQ ACCORDION & SEARCH
   ========================================================================== */
.o3-faq-list {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.o3-faq-item {
  background: var(--o3-white);
  border: 1px solid var(--o3-slate-200);
  border-radius: var(--o3-radius-md);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.o3-faq-item[open] {
  border-color: var(--o3-cyan-500);
  box-shadow: var(--o3-shadow-sm);
}

.o3-faq-item summary {
  list-style: none;
  padding: 20px 24px;
  font-family: var(--o3-font-heading);
  font-weight: 700;
  font-size: 1.03rem;
  color: var(--o3-slate-900);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.o3-faq-item summary::-webkit-details-marker {
  display: none;
}

.o3-faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--o3-slate-100);
  color: var(--o3-slate-700);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-weight: 700;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.o3-faq-item[open] .o3-faq-icon {
  transform: rotate(45deg);
  background: var(--o3-cyan-500);
  color: var(--o3-white);
}

.o3-faq-answer {
  padding: 0 24px 22px;
  color: var(--o3-slate-600);
  font-size: 0.96rem;
  border-top: 1px solid var(--o3-slate-100);
  padding-top: 16px;
}

.o3-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 32px;
}

.o3-filter-pill {
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid var(--o3-slate-300);
  background: var(--o3-white);
  font-family: var(--o3-font-heading);
  font-weight: 700;
  font-size: 0.86rem;
  color: var(--o3-slate-700);
  cursor: pointer;
  transition: all 0.2s ease;
}

.o3-filter-pill.is-active,
.o3-filter-pill:hover {
  background: var(--o3-navy-900);
  border-color: var(--o3-navy-900);
  color: var(--o3-white);
}

/* ==========================================================================
   CONTACT / QUOTE CONVERSION SECTION
   ========================================================================== */
.o3-contact-grid {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: 48px;
  align-items: start;
}

.o3-contact-info-card {
  background: linear-gradient(160deg, var(--o3-navy-900) 0%, var(--o3-navy-950) 100%);
  color: var(--o3-white);
  border-radius: var(--o3-radius-lg);
  padding: 38px 34px;
  box-shadow: var(--o3-shadow-lg);
}

.o3-contact-info-card h3 {
  color: var(--o3-white);
  font-size: 1.55rem;
  margin-bottom: 12px;
}

.o3-contact-channel {
  display: flex;
  gap: 15px;
  align-items: flex-start;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.o3-contact-channel:last-of-type {
  border-bottom: none;
}

.o3-contact-channel-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(34, 211, 238, 0.14);
  color: var(--o3-cyan-400);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.o3-contact-channel a {
  color: var(--o3-white);
  font-weight: 700;
  font-size: 1.08rem;
}

.o3-contact-channel a:hover {
  color: var(--o3-cyan-400);
}

.o3-quote-form-card {
  background: var(--o3-white);
  border: 1px solid var(--o3-slate-200);
  border-radius: var(--o3-radius-lg);
  padding: 38px 40px;
  box-shadow: var(--o3-shadow-md);
}

.o3-form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-bottom: 18px;
}

.o3-form-status {
  margin-top: 16px;
  padding: 14px 18px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.94rem;
  display: none;
}

.o3-form-status.is-success {
  display: block;
  background: #ECFDF5;
  border: 1px solid #6EE7B7;
  color: #065F46;
}

.o3-form-status.is-error {
  display: block;
  background: #FEF2F2;
  border: 1px solid #FCA5A5;
  color: #991B1B;
}

/* ==========================================================================
   PAGE HERO & SUBPAGE LAYOUTS
   ========================================================================== */
.o3-page-hero {
  background: radial-gradient(circle at 80% 25%, rgba(0, 163, 224, 0.22) 0%, transparent 50%),
              linear-gradient(160deg, var(--o3-navy-950) 0%, var(--o3-navy-900) 100%);
  color: var(--o3-white);
  padding: 64px 0 58px;
}

.o3-page-hero h1 {
  color: var(--o3-white);
  font-size: clamp(2rem, 3.6vw, 3rem);
  margin-bottom: 14px;
}

.o3-page-hero p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.1rem;
  max-width: 720px;
  margin: 0;
}

.o3-breadcrumbs {
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 16px;
}

.o3-breadcrumbs a {
  color: var(--o3-cyan-400);
}

.o3-content-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 48px;
  align-items: start;
}

.o3-prose {
  font-size: 1.04rem;
  line-height: 1.78;
  color: var(--o3-slate-700);
}

.o3-prose h2 {
  font-size: 1.75rem;
  margin-top: 36px;
  margin-bottom: 14px;
}

.o3-prose h3 {
  font-size: 1.3rem;
  margin-top: 28px;
  margin-bottom: 10px;
}

.o3-prose ul, .o3-prose ol {
  padding-left: 22px;
  margin-bottom: 22px;
}

.o3-prose li {
  margin-bottom: 8px;
}

.o3-prose img {
  border-radius: var(--o3-radius-md);
  margin: 20px 0;
}

/* ==========================================================================
   MODAL (VIDEO & QUICK QUOTE)
   ========================================================================== */
.o3-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(5, 14, 27, 0.82);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.o3-modal.is-open {
  display: flex;
}

.o3-modal-dialog {
  background: var(--o3-white);
  border-radius: var(--o3-radius-lg);
  width: 100%;
  max-width: 860px;
  overflow: hidden;
  position: relative;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.5);
}

.o3-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 10;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: none;
  background: rgba(15, 23, 42, 0.78);
  color: var(--o3-white);
  font-size: 1.3rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.o3-video-embed {
  aspect-ratio: 16 / 9;
  width: 100%;
  background: #000;
}

.o3-video-embed iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.o3-footer {
  background: var(--o3-navy-950);
  color: rgba(255, 255, 255, 0.76);
  padding: 72px 0 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.o3-footer-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr 1.15fr;
  gap: 40px;
  margin-bottom: 48px;
}

.o3-footer h4 {
  color: var(--o3-white);
  font-size: 1rem;
  margin-bottom: 18px;
}

.o3-footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.o3-footer-links a {
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.92rem;
}

.o3-footer-links a:hover {
  color: var(--o3-cyan-400);
}

.o3-footer-safety {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.32);
  border-radius: var(--o3-radius-md);
  padding: 18px 22px;
  margin-bottom: 32px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.88);
}

.o3-footer-safety strong {
  color: #FCD34D;
}

.o3-footer-bottom {
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.56);
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS
   ========================================================================== */
@media (max-width: 1080px) {
  .o3-nav,
  .o3-phone-pill {
    display: none;
  }
  .o3-menu-toggle {
    display: inline-flex;
  }
  .o3-hero-grid,
  .o3-calc-shell,
  .o3-science-grid,
  .o3-contact-grid,
  .o3-content-layout {
    grid-template-columns: 1fr;
  }
  .o3-apps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .o3-footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .o3-floating-badge-top,
  .o3-floating-badge-bottom {
    position: static;
    margin-top: 12px;
  }
}

@media (max-width: 720px) {
  .o3-topbar {
    display: none;
  }
  .o3-hero {
    padding: 52px 0 48px;
  }
  .o3-section {
    padding: 64px 0;
  }
  .o3-products-grid,
  .o3-apps-grid,
  .o3-docs-grid,
  .o3-form-row,
  .o3-stats-grid,
  .o3-footer-grid {
    grid-template-columns: 1fr;
  }
  .o3-stat-card {
    border-right: none;
    border-bottom: 1px solid var(--o3-slate-200);
    padding-bottom: 18px;
  }
  .o3-stat-card:last-child {
    border-bottom: none;
  }
  .o3-calc-controls,
  .o3-calc-result,
  .o3-quote-form-card,
  .o3-contact-info-card {
    padding: 26px 22px;
  }
  .o3-severity-pills {
    grid-template-columns: 1fr;
  }
}