/* ==========================================================================
   CLEARWATER FILTRATION — Premium CSS
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Custom Properties
   -------------------------------------------------------------------------- */
:root {
  /* Brand Colors */
  --blue-900: #0B5394;
  --blue-700: #1A8BC7;
  --teal:     #0EA5A9;
  --green:    #22C55E;
  --dark:     #0F172A;
  --dark-800: #1E293B;
  --gray-50:  #F8FAFC;
  --gray-100: #EFF6FF;
  --gray-200: #E2E8F0;
  --gray-400: #94A3B8;
  --white:    #FFFFFF;
  --red:      #EF4444;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius:    0.75rem;
  --radius-lg: 1.25rem;
  --radius-xl: 2rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(11,83,148,.08), 0 1px 2px rgba(11,83,148,.04);
  --shadow:     0 4px 16px rgba(11,83,148,.10), 0 2px 6px rgba(11,83,148,.06);
  --shadow-lg:  0 12px 40px rgba(11,83,148,.14), 0 4px 12px rgba(11,83,148,.08);
  --shadow-xl:  0 24px 60px rgba(11,83,148,.18);

  /* Transitions */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 0.3s;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--dark);
  background: var(--white);
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  background: none;
  border: none;
  font-family: inherit;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* --------------------------------------------------------------------------
   3. Layout Utilities
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section {
  padding: var(--space-24) 0;
}

/* --------------------------------------------------------------------------
   4. Typography
   -------------------------------------------------------------------------- */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-700);
  background: rgba(26,139,199,.1);
  padding: 0.3em 1em;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.label-danger {
  color: var(--red);
  background: rgba(239,68,68,.1);
}

.label-light {
  color: rgba(255,255,255,.9);
  background: rgba(255,255,255,.15);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-16);
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--dark);
  margin-bottom: var(--space-4);
}

.title-light { color: var(--white); }

.section-subtitle {
  font-size: 1.1rem;
  color: var(--gray-400);
  max-width: 600px;
  margin: 0 auto;
}

.subtitle-light { color: rgba(255,255,255,.65); }

/* --------------------------------------------------------------------------
   5. Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--dur) var(--ease);
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--blue-900);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(11,83,148,.3);
}

.btn-primary:hover {
  background: var(--blue-700);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(11,83,148,.35);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,.6);
  backdrop-filter: blur(4px);
}

.btn-outline:hover {
  background: rgba(255,255,255,.15);
  border-color: white;
  transform: translateY(-2px);
}

.btn-outline-blue {
  background: transparent;
  color: var(--blue-900);
  border-color: var(--blue-900);
}

.btn-outline-blue:hover {
  background: var(--blue-900);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-full {
  width: 100%;
}

/* --------------------------------------------------------------------------
   6. Header
   -------------------------------------------------------------------------- */
#header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: background var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease),
              backdrop-filter var(--dur) var(--ease);
}

#header.scrolled {
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(0,0,0,.06), var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  height: 72px;
}

.logo-link {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-svg {
  height: 44px;
  width: auto;
}

#header.scrolled .logo-text-main {
  fill: #0B5394;
  transition: fill .3s ease;
}

#header.scrolled .logo-text-sub {
  fill: #0EA5A9;
  transition: fill .3s ease;
}

.logo-text-main,
.logo-text-sub {
  transition: fill .3s ease;
}

.main-nav {
  display: none;
  align-items: center;
  gap: var(--space-2);
  flex: 1;
  justify-content: center;
}

@media (min-width: 1024px) {
  .main-nav { display: flex; }
}

.nav-link {
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(255,255,255,.9);
  transition: all var(--dur) var(--ease);
}

#header.scrolled .nav-link {
  color: var(--dark-800);
}

.nav-link:hover {
  background: rgba(255,255,255,.15);
  color: white;
}

#header.scrolled .nav-link:hover {
  background: var(--gray-100);
  color: var(--blue-900);
}

.nav-cta {
  background: var(--blue-900);
  color: white !important;
  font-weight: 600;
  padding: 0.5rem 1.25rem;
}

.nav-cta:hover {
  background: var(--blue-700) !important;
}

/* Language Switcher — hidden on mobile, only desktop header shows it */
.lang-switcher {
  display: none;
  align-items: center;
  gap: var(--space-1);
  flex-shrink: 0;
}

@media (min-width: 1024px) {
  .lang-switcher {
    display: flex;
  }
}

.lang-btn {
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: rgba(255,255,255,.75);
  transition: all var(--dur) var(--ease);
  border: 1.5px solid transparent;
}

#header.scrolled .lang-btn {
  color: var(--gray-400);
}

.lang-btn:hover,
.lang-btn.active {
  color: white;
  background: rgba(255,255,255,.2);
  border-color: rgba(255,255,255,.3);
}

#header.scrolled .lang-btn:hover,
#header.scrolled .lang-btn.active {
  color: var(--blue-900);
  background: var(--gray-100);
  border-color: var(--blue-700);
}

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  margin-left: auto;
}

@media (min-width: 1024px) {
  .hamburger { display: none; }
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: white;
  border-radius: 2px;
  transition: all var(--dur) var(--ease);
}

#header.scrolled .hamburger span {
  background: var(--dark);
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Nav */
.mobile-nav {
  display: none;
  flex-direction: column;
  padding: var(--space-4) var(--space-6);
  background: rgba(255,255,255,.98);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--gray-200);
}

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

.mobile-nav .nav-link {
  color: var(--dark);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--gray-100);
  font-size: 0.95rem;
}

.mobile-nav .nav-link:hover {
  color: var(--blue-900);
  background: none;
}

.mobile-lang {
  margin-top: var(--space-4);
  display: flex !important;
}

.mobile-lang .lang-btn {
  color: var(--gray-400);
}

.mobile-lang .lang-btn.active {
  color: var(--blue-900);
  background: var(--gray-100);
  border-color: var(--blue-700);
}

/* --------------------------------------------------------------------------
   7. Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, #0B5394 0%, #0A3D6B 40%, #0A2F54 70%, #071E36 100%);
}

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

.hero-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 80% 40%, rgba(14,165,169,.18) 0%, transparent 70%),
    radial-gradient(ellipse 50% 50% at 20% 70%, rgba(26,139,199,.15) 0%, transparent 60%);
}

/* Animated ripple circles */
.ripple-container {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.ripple {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.06);
  animation: rippleAnim 6s ease-in-out infinite;
}

.r1 { width: 300px; height: 300px; top: 20%; left: 60%; animation-delay: 0s; }
.r2 { width: 500px; height: 500px; top: 10%; left: 55%; animation-delay: 2s; }
.r3 { width: 700px; height: 700px; top: 0%; left: 50%; animation-delay: 4s; }

@keyframes rippleAnim {
  0%, 100% { transform: scale(1); opacity: .6; }
  50% { transform: scale(1.05); opacity: .3; }
}

.wave-anim {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  overflow: hidden;
}

.wave-anim-shape {
  position: absolute;
  bottom: -10px;
  left: -50%;
  width: 200%;
  height: 100%;
  border-radius: 40%;
}

.w1 {
  background: rgba(14,165,169,.08);
  animation: waveFloat 8s ease-in-out infinite;
}

.w2 {
  background: rgba(26,139,199,.06);
  animation: waveFloat 12s ease-in-out infinite reverse;
  bottom: -20px;
}

@keyframes waveFloat {
  0%, 100% { transform: translateX(0) rotate(0deg); }
  50% { transform: translateX(5%) rotate(2deg); }
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
  padding-top: 72px;
  padding-bottom: var(--space-16);
}

@media (min-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr 1fr;
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(34,197,94,.15);
  border: 1px solid rgba(34,197,94,.3);
  color: #86EFAC;
  border-radius: var(--radius-full);
  padding: 0.35rem 1rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-6);
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  color: white;
  margin-bottom: var(--space-6);
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: rgba(255,255,255,.75);
  line-height: 1.7;
  margin-bottom: var(--space-8);
  max-width: 520px;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.hero-scroll-hint {
  margin-top: var(--space-12);
}

.scroll-indicator {
  width: 24px;
  height: 40px;
  border: 2px solid rgba(255,255,255,.3);
  border-radius: 12px;
  position: relative;
}

.scroll-indicator::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: rgba(255,255,255,.6);
  border-radius: 2px;
  animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
  50% { transform: translateX(-50%) translateY(10px); opacity: .3; }
}

/* Hero visual */
.hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
}

.hero-image-frame {
  position: relative;
  width: 100%;
  max-width: 440px;
  overflow: visible;
}

.hero-image-glow {
  position: absolute;
  inset: -20px;
  background: radial-gradient(ellipse at center, rgba(14,165,169,.3) 0%, transparent 70%);
  border-radius: var(--radius-xl);
  z-index: 0;
}

.hero-product-img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 320px;
  object-fit: cover;
  object-position: center 55%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(255,255,255,.1);
}

@media (min-width: 900px) {
  .hero-product-img { height: 380px; }
}

.hero-image-badge {
  position: absolute;
  bottom: var(--space-4);
  left: var(--space-4);
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(11,83,148,.85);
  backdrop-filter: blur(8px);
  color: white;
  border-radius: var(--radius-full);
  padding: 0.4rem 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 1px solid rgba(255,255,255,.2);
}

.hero-stat-cards {
  display: flex;
  gap: var(--space-4);
  width: 100%;
  max-width: 440px;
}

.hero-stat {
  flex: 1;
  background: rgba(255,255,255,.08);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
  padding: var(--space-4) var(--space-5);
  text-align: center;
}

.hero-stat-num {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  color: white;
  line-height: 1;
  margin-bottom: var(--space-2);
}

.hero-stat-label {
  font-size: 0.72rem;
  color: rgba(255,255,255,.6);
  line-height: 1.3;
}

/* Wave dividers */
.section-wave {
  line-height: 0;
  display: block;
  overflow: hidden;
}

.section-wave svg {
  display: block;
  width: 100%;
  height: 80px;
}

.hero-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 3;
}

/* --------------------------------------------------------------------------
   8. About
   -------------------------------------------------------------------------- */
.about {
  background: var(--white);
  padding-top: var(--space-20);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-16);
}

@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
}

.about-text p {
  color: var(--dark-800);
  line-height: 1.75;
  margin-bottom: var(--space-5);
  font-size: 1.05rem;
}

.mission-callout {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  background: linear-gradient(135deg, rgba(14,165,169,.06) 0%, rgba(11,83,148,.06) 100%);
  border-left: 3px solid var(--teal);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: var(--space-5) var(--space-6);
  margin-top: var(--space-6);
}

.mission-icon {
  flex-shrink: 0;
  margin-top: 2px;
}

.mission-callout strong {
  display: block;
  color: var(--dark);
  font-weight: 700;
  margin-bottom: var(--space-2);
  font-size: 0.95rem;
}

.mission-callout p {
  color: var(--dark-800);
  font-size: 0.95rem;
  margin: 0;
}

.about-image {
  position: relative;
}

.about-img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  object-position: center 50%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* Value Cards */
.value-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}

@media (min-width: 768px) {
  .value-cards {
    grid-template-columns: repeat(4, 1fr);
  }
}

.value-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  transition: all var(--dur) var(--ease);
  box-shadow: var(--shadow-sm);
}

.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(14,165,169,.3);
}

.value-icon {
  width: 64px;
  height: 64px;
  background: var(--gray-50);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
}

.value-card h3 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: var(--space-2);
}

.value-card p {
  font-size: 0.82rem;
  color: var(--gray-400);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   9. Problem
   -------------------------------------------------------------------------- */
.problem {
  background: var(--gray-100);
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  margin-bottom: var(--space-10);
}

@media (min-width: 640px) {
  .problem-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.problem-img-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.problem-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform 0.5s var(--ease);
}

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

.problem-img-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(15,23,42,.85) 0%, transparent 100%);
  color: white;
  font-size: 0.8rem;
  font-weight: 600;
  padding: var(--space-6) var(--space-3) var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.contaminants {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}

.contaminant-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-full);
  padding: 0.4rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--dark-800);
}

.contaminant-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.c-red    { background: #EF4444; }
.c-orange { background: #F97316; }
.c-yellow { background: #EAB308; }
.c-gray   { background: #94A3B8; }
.c-brown  { background: #92400E; }
.c-green  { background: #22C55E; }

/* --------------------------------------------------------------------------
   10. Solutions
   -------------------------------------------------------------------------- */
.solutions {
  background: var(--white);
}

.product-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-16);
}

@media (min-width: 768px) {
  .product-cards {
    grid-template-columns: repeat(3, 1fr);
    align-items: start;
  }
}

.product-card {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--dur) var(--ease);
  position: relative;
}

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

.product-featured {
  border-color: var(--blue-900);
  box-shadow: 0 0 0 2px rgba(11,83,148,.15), var(--shadow-lg);
}

@media (min-width: 768px) {
  .product-featured {
    transform: scale(1.02);
    margin-top: -12px;
  }
  .product-featured:hover {
    transform: scale(1.02) translateY(-6px);
  }
}

.product-badge {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  z-index: 10;
  background: var(--blue-900);
  color: white;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-full);
  box-shadow: 0 2px 8px rgba(11,83,148,.4);
}

.product-img-wrap {
  position: relative;
  height: 240px;
  overflow: hidden;
  background: var(--gray-50);
}

.product-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 35%;
  transition: transform 0.5s var(--ease);
}

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

.made-in-badge {
  position: absolute;
  bottom: var(--space-3);
  left: var(--space-3);
  background: rgba(11,83,148,.85);
  backdrop-filter: blur(4px);
  color: white;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,255,255,.2);
}

.product-body {
  padding: var(--space-6);
}

.product-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--blue-900);
  line-height: 1;
  margin-bottom: var(--space-1);
}

.product-subtitle {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-4);
}

.product-desc {
  font-size: 0.9rem;
  color: var(--dark-800);
  line-height: 1.6;
  margin-bottom: var(--space-5);
}

.product-features {
  margin-bottom: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.product-features li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.875rem;
  color: var(--dark-800);
}

.feat-check {
  color: var(--green);
  font-weight: 700;
  font-size: 0.95rem;
  flex-shrink: 0;
}

/* Benefit blocks */
.benefit-blocks {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

@media (min-width: 640px) {
  .benefit-blocks {
    grid-template-columns: repeat(3, 1fr);
  }
}

.benefit-block {
  text-align: center;
  padding: var(--space-8) var(--space-6);
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  transition: all var(--dur) var(--ease);
}

.benefit-block:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.benefit-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-5);
}

.benefit-health { background: rgba(34,197,94,.1); }
.benefit-eco    { background: rgba(14,165,169,.1); }
.benefit-save   { background: rgba(26,139,199,.1); }

.benefit-block h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: var(--space-3);
}

.benefit-block p {
  font-size: 0.9rem;
  color: var(--gray-400);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   11. Technology
   -------------------------------------------------------------------------- */
.technology {
  background: linear-gradient(135deg, #0B5394 0%, #07305F 50%, #041E35 100%);
  padding: var(--space-24) 0;
}

.tech-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-16);
  position: relative;
}

@media (min-width: 900px) {
  .tech-steps {
    grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
    align-items: start;
    gap: 0;
  }
}

.tech-arrow {
  display: none;
  align-self: flex-start;
  padding-top: 48px;
}

@media (min-width: 900px) {
  .tech-arrow { display: flex; align-items: center; }
}

.tech-step {
  text-align: center;
  padding: var(--space-6);
}

.tech-step-num {
  font-size: 3rem;
  font-weight: 900;
  color: rgba(255,255,255,.08);
  line-height: 1;
  margin-bottom: var(--space-3);
  font-variant-numeric: tabular-nums;
}

.tech-step-icon {
  width: 80px;
  height: 80px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-5);
}

.tech-step-title {
  font-size: 1rem;
  font-weight: 700;
  color: white;
  margin-bottom: var(--space-3);
}

.tech-step-text {
  font-size: 0.85rem;
  color: rgba(255,255,255,.6);
  line-height: 1.65;
}

/* Differentiators */
.tech-diff {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-xl);
  padding: var(--space-10) var(--space-12);
}

.tech-diff-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: white;
  margin-bottom: var(--space-6);
  text-align: center;
}

.tech-diff-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .tech-diff-list {
    grid-template-columns: 1fr 1fr;
  }
}

.tech-diff-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: 0.9rem;
  color: rgba(255,255,255,.8);
  line-height: 1.5;
}

.diff-check {
  color: var(--green);
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 1px;
}

/* --------------------------------------------------------------------------
   12. Use Cases
   -------------------------------------------------------------------------- */
.use-cases {
  background: var(--white);
}

.usecase-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .usecase-cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

.usecase-card {
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow);
  transition: all var(--dur) var(--ease);
}

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

.usecase-img-wrap {
  position: relative;
  height: 240px;
  overflow: hidden;
}

.usecase-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.5s var(--ease);
}

.usecase-card:hover .usecase-img {
  transform: scale(1.06);
}

.usecase-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 40%, rgba(11,83,148,.5) 100%);
}

.usecase-body {
  padding: var(--space-6);
}

.usecase-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: var(--space-3);
}

.usecase-body p {
  font-size: 0.875rem;
  color: var(--gray-400);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}

.usecase-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--blue-700);
  transition: color var(--dur) var(--ease);
}

.usecase-link:hover { color: var(--blue-900); }

/* --------------------------------------------------------------------------
   13. Credibility
   -------------------------------------------------------------------------- */
.credibility {
  background: var(--dark);
}

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-px, 1px);
  margin-bottom: var(--space-12);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

@media (min-width: 640px) {
  .stat-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-item {
  padding: var(--space-8) var(--space-5);
  text-align: center;
  border-right: 1px solid rgba(255,255,255,.08);
  border-bottom: 1px solid rgba(255,255,255,.08);
}

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

.stat-number {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  color: white;
  line-height: 1;
  margin-bottom: var(--space-3);
  background: linear-gradient(135deg, #60A5FA, #38BDF8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.82rem;
  color: rgba(255,255,255,.5);
  line-height: 1.4;
}

/* Certifications */
.cert-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-12);
}

@media (min-width: 640px) {
  .cert-list {
    grid-template-columns: 1fr 1fr;
  }
}

.cert-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--radius);
  padding: var(--space-4) var(--space-5);
  font-size: 0.875rem;
  color: rgba(255,255,255,.75);
  line-height: 1.5;
}

.cert-item svg { flex-shrink: 0; margin-top: 1px; }

/* Testimonials */
.testimonials {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .testimonials {
    grid-template-columns: repeat(3, 1fr);
  }
}

.testimonial {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  position: relative;
}

.testimonial-quote {
  font-size: 4rem;
  line-height: 1;
  color: var(--blue-700);
  opacity: .4;
  font-family: Georgia, serif;
  margin-bottom: var(--space-4);
}

.testimonial p {
  font-size: 0.9rem;
  color: rgba(255,255,255,.75);
  line-height: 1.7;
  font-style: italic;
  margin-bottom: var(--space-5);
}

.testimonial-author {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--blue-700);
}

/* --------------------------------------------------------------------------
   14. Contact
   -------------------------------------------------------------------------- */
.contact {
  background: var(--gray-50);
}

.contact-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
}

@media (min-width: 900px) {
  .contact-split {
    grid-template-columns: 1fr 1.2fr;
    align-items: start;
  }
}

.contact-info .section-title {
  margin-top: var(--space-4);
  margin-bottom: var(--space-5);
}

.contact-info > p {
  color: var(--dark-800);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  margin-bottom: var(--space-8);
}

.contact-detail {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.contact-icon {
  width: 44px;
  height: 44px;
  background: rgba(14,165,169,.1);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-detail strong {
  display: block;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 2px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-detail p {
  font-size: 0.875rem;
  color: var(--gray-400);
}

.contact-made-in {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--dark-800);
  font-size: 0.9rem;
  font-weight: 500;
}

/* Form */
.contact-form-wrap {
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--space-8);
  border: 1px solid var(--gray-200);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

@media (min-width: 480px) {
  .form-row { grid-template-columns: 1fr 1fr; }
}

.form-group {
  position: relative;
}

.form-group-full {
  grid-column: 1 / -1;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 1.25rem 1rem 0.5rem;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 0.95rem;
  color: var(--dark);
  background: var(--gray-50);
  transition: all var(--dur) var(--ease);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

.form-group textarea {
  resize: vertical;
  min-height: 110px;
}

.form-group label {
  position: absolute;
  top: 0.8rem;
  left: 1rem;
  font-size: 0.9rem;
  color: var(--gray-400);
  pointer-events: none;
  transition: all 0.2s var(--ease);
  white-space: nowrap;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue-700);
  background: white;
  box-shadow: 0 0 0 3px rgba(26,139,199,.12);
}

.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group select:focus ~ label,
.form-group select:not([value=""]) ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label {
  top: 0.25rem;
  font-size: 0.7rem;
  color: var(--blue-700);
  font-weight: 600;
  letter-spacing: 0.04em;
}

.form-select-wrap { position: relative; }

.select-arrow {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}

.form-success {
  display: none;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-4);
  padding: var(--space-12);
}

.form-success.show {
  display: flex;
}

.form-success p {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--dark);
}

/* --------------------------------------------------------------------------
   15. Footer
   -------------------------------------------------------------------------- */
.footer {
  background: var(--dark);
}

.footer-top {
  padding: var(--space-16) 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
  }
}

.footer-brand .logo-svg {
  height: 40px;
  margin-bottom: var(--space-4);
}

.footer-desc {
  font-size: 0.875rem;
  color: rgba(255,255,255,.5);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}

.footer-made-in {
  font-size: 0.82rem;
  color: rgba(255,255,255,.4);
  font-weight: 500;
}

.footer-col h4 {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,.4);
  margin-bottom: var(--space-5);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-col ul li a,
.footer-col ul li span {
  font-size: 0.875rem;
  color: rgba(255,255,255,.55);
  transition: color var(--dur) var(--ease);
}

.footer-col ul li a:hover { color: white; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.07);
  padding: var(--space-5) 0;
}

.footer-bottom-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: center;
  text-align: center;
}

@media (min-width: 640px) {
  .footer-bottom-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-bottom-inner span {
  font-size: 0.82rem;
  color: rgba(255,255,255,.35);
}

.footer-legal {
  display: flex;
  gap: var(--space-5);
}

.footer-legal a {
  font-size: 0.82rem;
  color: rgba(255,255,255,.35);
  transition: color var(--dur) var(--ease);
}

.footer-legal a:hover { color: white; }

/* --------------------------------------------------------------------------
   16. Scroll Reveal Animations
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s var(--ease), transform 0.65s var(--ease);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger for children */
.value-cards .reveal:nth-child(1) { transition-delay: 0s; }
.value-cards .reveal:nth-child(2) { transition-delay: 0.08s; }
.value-cards .reveal:nth-child(3) { transition-delay: 0.16s; }
.value-cards .reveal:nth-child(4) { transition-delay: 0.24s; }

.product-cards .reveal:nth-child(1) { transition-delay: 0s; }
.product-cards .reveal:nth-child(2) { transition-delay: 0.1s; }
.product-cards .reveal:nth-child(3) { transition-delay: 0.2s; }

.benefit-blocks .reveal:nth-child(1) { transition-delay: 0s; }
.benefit-blocks .reveal:nth-child(2) { transition-delay: 0.1s; }
.benefit-blocks .reveal:nth-child(3) { transition-delay: 0.2s; }

.tech-steps .reveal:nth-child(odd) { transition-delay: 0s; }
.tech-steps .reveal:nth-child(1) { transition-delay: 0s; }
.tech-steps .reveal:nth-child(3) { transition-delay: 0.12s; }
.tech-steps .reveal:nth-child(5) { transition-delay: 0.24s; }
.tech-steps .reveal:nth-child(7) { transition-delay: 0.36s; }

.usecase-cards .reveal:nth-child(1) { transition-delay: 0s; }
.usecase-cards .reveal:nth-child(2) { transition-delay: 0.1s; }
.usecase-cards .reveal:nth-child(3) { transition-delay: 0.2s; }

.testimonials .reveal:nth-child(1) { transition-delay: 0s; }
.testimonials .reveal:nth-child(2) { transition-delay: 0.1s; }
.testimonials .reveal:nth-child(3) { transition-delay: 0.2s; }

.stat-grid .reveal:nth-child(1) { transition-delay: 0s; }
.stat-grid .reveal:nth-child(2) { transition-delay: 0.08s; }
.stat-grid .reveal:nth-child(3) { transition-delay: 0.16s; }
.stat-grid .reveal:nth-child(4) { transition-delay: 0.24s; }

.problem-grid .reveal:nth-child(1) { transition-delay: 0s; }
.problem-grid .reveal:nth-child(2) { transition-delay: 0.08s; }
.problem-grid .reveal:nth-child(3) { transition-delay: 0.16s; }
.problem-grid .reveal:nth-child(4) { transition-delay: 0.24s; }

/* --------------------------------------------------------------------------
   17. Responsive Tweaks
   -------------------------------------------------------------------------- */
@media (max-width: 480px) {
  .hero-ctas {
    flex-direction: column;
  }
  .btn {
    width: 100%;
    justify-content: center;
  }
  .hero-stat-cards {
    flex-direction: column;
  }
  .value-cards {
    grid-template-columns: 1fr;
  }
  .stat-grid {
    grid-template-columns: 1fr 1fr;
  }
  .tech-diff {
    padding: var(--space-6);
  }
  .contact-form-wrap {
    padding: var(--space-6);
  }
}

/* Kiosk / large screen optimizations */
@media (min-width: 1400px) {
  .container {
    max-width: 1360px;
  }
}

/* --------------------------------------------------------------------------
   18. Accessibility
   -------------------------------------------------------------------------- */
:focus-visible {
  outline: 2px solid var(--blue-700);
  outline-offset: 3px;
  border-radius: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}