/* ===================================
   JJ&A Instruments Website Styles
   Light Medical Theme - Clean & Modern
   =================================== */

/* CSS Variables */
:root {
  /* Colors - Clean Medical Aesthetic */
  --color-primary: #0066cc;
  --color-primary-dark: #004d99;
  --color-primary-light: #3399ff;
  --color-accent: #00a878;
  --color-accent-light: #00d998;

  --color-bg: #ffffff;
  --color-bg-light: #f8fafc;
  --color-bg-card: #ffffff;
  --color-bg-elevated: #f1f5f9;

  --color-text: #334155;
  --color-text-muted: #64748b;
  --color-text-dark: #0f172a;

  --color-border: #e2e8f0;
  --color-border-strong: #cbd5e1;

  /* Medical accent colors */
  --color-medical-blue: #0077b6;
  --color-medical-teal: #0096c7;
  --color-medical-green: #00a878;

  /* Typography - with i18n font support */
  --font-display: "Instrument Serif", Georgia, serif;
  --font-body: "DM Sans", "Noto Sans JP", "Noto Sans SC", "Noto Sans Devanagari", -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* Shadows - Softer for light theme */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 40px rgba(0, 102, 204, 0.15);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  color: var(--color-primary-dark);
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-text-dark);
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
}
h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}
h3 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
}

h1 em,
h2 em {
  font-style: italic;
  color: var(--color-primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.875rem 1.75rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 4px 14px rgba(0, 102, 204, 0.35);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 102, 204, 0.4);
  color: white;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

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

.btn-nav {
  padding: 0.625rem 1.25rem;
  background: var(--color-primary);
  color: white;
  font-size: 0.875rem;
}

.btn.full-width {
  width: 100%;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-text-dark);
}

.logo:hover {
  color: var(--color-primary);
}

.logo-icon {
  width: 36px;
  height: 36px;
  color: var(--color-primary);
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
}

.nav-links a {
  color: var(--color-text);
  font-size: 0.9375rem;
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--color-primary);
}

/* Language Selector */
.lang-selector {
  position: relative;
  margin-left: var(--space-md);
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  transition: all var(--transition-fast);
}

.lang-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.lang-btn svg {
  color: var(--color-primary);
}

.current-lang {
  font-weight: 600;
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 150px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  list-style: none;
  padding: var(--space-xs);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
  z-index: 1001;
}

.lang-selector.active .lang-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-dropdown button {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  color: var(--color-text);
  cursor: pointer;
  text-align: left;
  transition: all var(--transition-fast);
}

.lang-dropdown button:hover {
  background: var(--color-bg-light);
  color: var(--color-primary);
}

.lang-dropdown button.active {
  background: rgba(0, 102, 204, 0.1);
  color: var(--color-primary);
  font-weight: 600;
}

/* Navigation Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.nav-dropdown-toggle svg {
  transition: transform var(--transition-fast);
}

.nav-dropdown:hover .nav-dropdown-toggle svg {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  list-style: none;
  padding: var(--space-sm);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-fast);
  z-index: 1001;
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-menu li {
  margin: 0;
}

.nav-dropdown-menu a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 0.9375rem;
  transition: all var(--transition-fast);
}

.nav-dropdown-menu a:hover {
  background: var(--color-bg-light);
  color: var(--color-primary);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-dark);
  position: relative;
}

.hamburger::before,
.hamburger::after {
  content: "";
  position: absolute;
  width: 24px;
  height: 2px;
  background: var(--color-text-dark);
  left: 0;
}

.hamburger::before {
  top: -7px;
}
.hamburger::after {
  bottom: -7px;
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 0 4rem;
  overflow: hidden;
  background: linear-gradient(180deg, #f0f9ff 0%, #ffffff 100%);
}

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

.wave {
  position: absolute;
  width: 200%;
  height: 100%;
  background: radial-gradient(ellipse at center, var(--color-primary) 0%, transparent 70%);
  opacity: 0.05;
  animation: wave 20s ease-in-out infinite;
}

.wave-1 {
  animation-delay: 0s;
}
.wave-2 {
  animation-delay: -7s;
  opacity: 0.03;
}
.wave-3 {
  animation-delay: -14s;
  opacity: 0.02;
}

@keyframes wave {
  0%,
  100% {
    transform: translate(-25%, -25%) rotate(0deg);
  }
  50% {
    transform: translate(-25%, -25%) rotate(180deg);
  }
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(0, 102, 204, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 102, 204, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(0, 102, 204, 0.1);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: var(--space-lg);
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  margin: var(--space-xl) 0;
  max-width: 500px;
}

.hero-cta {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-2xl);
}

.trust-badges {
  display: flex;
  gap: var(--space-2xl);
}

.trust-item {
  display: flex;
  flex-direction: column;
}

.trust-number {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--color-primary);
}

.trust-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Phantom Illustration */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.phantom-illustration {
  position: relative;
  width: 100%;
  max-width: 450px;
}

.phantom-body {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-lg);
}

.phantom-tank {
  position: relative;
  height: 150px;
  background: linear-gradient(180deg, rgba(0, 150, 199, 0.05) 0%, rgba(0, 150, 199, 0.15) 100%);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--space-lg);
}

.water-level {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80%;
  background: linear-gradient(180deg, rgba(0, 150, 199, 0.1) 0%, rgba(0, 150, 199, 0.25) 100%);
  animation: waterMove 3s ease-in-out infinite;
}

@keyframes waterMove {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

.string-path {
  position: absolute;
  top: 50%;
  left: 10%;
  right: 10%;
  transform: translateY(-50%);
  color: var(--color-accent);
}

.string-line {
  stroke-dasharray: 200;
  animation: stringFlow 2s linear infinite;
}

@keyframes stringFlow {
  to {
    stroke-dashoffset: -200;
  }
}

.pulley {
  position: absolute;
  width: 20px;
  height: 20px;
  background: var(--color-bg-elevated);
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  top: 50%;
  transform: translateY(-50%);
}

.pulley-left {
  left: 5%;
}
.pulley-right {
  right: 5%;
}

.motor-unit {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.motor-body {
  width: 60px;
  height: 40px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
}

.motor-dial {
  width: 30px;
  height: 30px;
  background: conic-gradient(var(--color-primary) 0deg 270deg, var(--color-bg-elevated) 270deg 360deg);
  border-radius: 50%;
  border: 2px solid var(--color-border-strong);
}

.display-unit {
  background: #1e293b;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: var(--space-md);
  text-align: center;
  font-family: "Courier New", monospace;
}

.velocity-reading {
  font-size: 2.5rem;
  color: #22d3ee;
  text-shadow: 0 0 20px rgba(34, 211, 238, 0.5);
  animation: flicker 4s ease-in-out infinite;
}

.velocity-unit {
  display: block;
  font-size: 0.875rem;
  color: #0891b2;
}

@keyframes flicker {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.9;
  }
}

.probe-indicator {
  position: absolute;
  top: -30px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
}

.probe-beam {
  width: 40px;
  height: 60px;
  margin: 0 auto var(--space-sm);
  background: linear-gradient(180deg, var(--color-primary-light) 0%, transparent 100%);
  clip-path: polygon(30% 0%, 70% 0%, 100% 100%, 0% 100%);
  opacity: 0.4;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.2;
  }
  50% {
    opacity: 0.5;
  }
}

.probe-indicator span {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.scroll-indicator {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.75rem;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  margin: var(--space-sm) auto 0;
  border-right: 2px solid var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
  transform: rotate(45deg);
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%,
  100% {
    transform: rotate(45deg) translateY(0);
  }
  50% {
    transform: rotate(45deg) translateY(5px);
  }
}

/* Section Styling */
section {
  padding: var(--space-4xl) 0;
}

.section-header {
  margin-bottom: var(--space-3xl);
}

.section-header.centered {
  text-align: center;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.section-desc {
  color: var(--color-text-muted);
  font-size: 1.125rem;
  margin-top: var(--space-md);
}

/* What Is Section */
.what-is {
  background: var(--color-bg-light);
}

.what-is-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.what-is-text .lead {
  font-size: 1.25rem;
  color: var(--color-text-dark);
  margin-bottom: var(--space-lg);
}

.what-is-text p {
  margin-bottom: var(--space-md);
  color: var(--color-text-muted);
}

.diagram-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
}

.diagram-card h3 {
  margin-bottom: var(--space-lg);
  color: var(--color-primary);
}

.process-list {
  list-style: none;
}

.process-list li {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.process-list li:last-child {
  margin-bottom: 0;
}

.process-num {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-primary);
  opacity: 0.4;
  flex-shrink: 0;
}

.process-list strong {
  display: block;
  color: var(--color-text-dark);
  margin-bottom: var(--space-xs);
}

.process-list p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* Features Section */
.features {
  background: var(--color-bg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.feature-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-lg);
  color: var(--color-primary);
}

.feature-icon svg {
  width: 100%;
  height: 100%;
}

.feature-card h3 {
  margin-bottom: var(--space-sm);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.125rem;
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* Specifications Section */
.specifications {
  background: var(--color-bg-light);
}

.specs-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.specs-table {
  margin: var(--space-xl) 0;
}

.spec-row {
  display: flex;
  justify-content: space-between;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
}

.spec-label {
  color: var(--color-text-muted);
}

.spec-value {
  color: var(--color-text-dark);
  font-weight: 500;
}

.specs-visual {
  display: flex;
  justify-content: center;
}

.product-showcase {
  text-align: center;
}

.showcase-device {
  background: var(--color-bg-card);
  border: 2px solid var(--color-border-strong);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-lg);
}

.device-front {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.device-screen {
  background: #1e293b;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  text-align: center;
}

.screen-value {
  font-family: "Courier New", monospace;
  font-size: 3rem;
  color: #22d3ee;
  text-shadow: 0 0 30px rgba(34, 211, 238, 0.5);
}

.screen-unit {
  display: block;
  color: #0891b2;
  font-size: 1rem;
}

.device-controls {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
}

.control-btn {
  width: 50px;
  height: 50px;
  background: var(--color-bg-elevated);
  border: 2px solid var(--color-border-strong);
  border-radius: 50%;
  color: var(--color-text);
  font-size: 1.25rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.control-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

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

.device-window {
  height: 80px;
  background: linear-gradient(180deg, rgba(0, 150, 199, 0.1) 0%, rgba(0, 150, 199, 0.2) 100%);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
}

.window-string {
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  animation: stringMove 1s linear infinite;
}

@keyframes stringMove {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(100%);
  }
}

.showcase-label {
  margin-top: var(--space-lg);
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* Applications Section */
.applications {
  background: var(--color-bg);
}

.apps-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.app-card {
  display: flex;
  gap: var(--space-lg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.app-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.app-image {
  flex-shrink: 0;
}

.app-icon {
  width: 60px;
  height: 60px;
  background: rgba(0, 102, 204, 0.08);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.app-icon svg {
  width: 28px;
  height: 28px;
}

.app-content h3 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.125rem;
  margin-bottom: var(--space-sm);
}

.app-content p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* Testimonials */
.testimonials {
  background: linear-gradient(180deg, #f0f9ff 0%, #f8fafc 100%);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.testimonial-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
}

.stars {
  color: #f59e0b;
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
}

.testimonial-card p {
  color: var(--color-text);
  font-style: italic;
  margin-bottom: var(--space-lg);
}

.testimonial-card cite {
  font-style: normal;
}

.testimonial-card cite strong {
  display: block;
  color: var(--color-text-dark);
}

.testimonial-card cite span {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* FAQ Section */
.faq {
  background: var(--color-bg);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item summary {
  padding: var(--space-lg) 0;
  cursor: pointer;
  font-weight: 500;
  color: var(--color-text-dark);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 1.5rem;
  color: var(--color-primary);
  transition: transform var(--transition-fast);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding-bottom: var(--space-lg);
  color: var(--color-text-muted);
}

.faq-answer p {
  line-height: 1.7;
}

/* Contact Section */
.contact {
  background: var(--color-bg-light);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
}

.contact-methods {
  margin-top: var(--space-xl);
}

.contact-method {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.contact-method svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.contact-method strong {
  display: block;
  color: var(--color-text-dark);
}

.contact-method span {
  color: var(--color-text-muted);
}

.contact-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-md);
}

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

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

.form-group label {
  font-size: 0.875rem;
  color: var(--color-text);
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.875rem 1rem;
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-dark);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-group select {
  cursor: pointer;
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* Footer */
.footer {
  background: #1e293b;
  color: #e2e8f0;
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer a {
  color: #94a3b8;
}

.footer a:hover {
  color: white;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand .logo {
  color: white;
}

.footer-brand .logo-icon {
  color: var(--color-primary-light);
}

.footer-brand p {
  color: #94a3b8;
  margin: var(--space-md) 0;
  max-width: 280px;
}

.certifications {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.cert-badge {
  padding: 0.25rem 0.75rem;
  background: rgba(51, 153, 255, 0.1);
  border: 1px solid var(--color-primary-light);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary-light);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.footer-col h4 {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: white;
  margin-bottom: var(--space-md);
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: var(--space-sm);
}

.footer-col a {
  font-size: 0.9375rem;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  border-top: 1px solid #334155;
  font-size: 0.875rem;
  color: #94a3b8;
}

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

/* Mobile Responsive */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: block;
  }

  .lang-selector {
    position: absolute;
    right: 60px;
    top: 50%;
    transform: translateY(-50%);
    margin-left: 0;
  }

  .lang-btn {
    padding: var(--space-xs) var(--space-sm);
  }

  .lang-dropdown {
    right: -20px;
  }

  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    padding: var(--space-xl);
    gap: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta {
    justify-content: center;
  }

  .trust-badges {
    justify-content: center;
  }

  .hero-visual {
    order: -1;
  }

  .phantom-illustration {
    max-width: 350px;
  }

  .what-is-content {
    grid-template-columns: 1fr;
  }

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

  .specs-layout {
    grid-template-columns: 1fr;
  }

  .specs-visual {
    order: -1;
  }

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

  .app-card {
    flex-direction: column;
    text-align: center;
  }

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

  .contact-wrapper {
    grid-template-columns: 1fr;
  }

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

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

  .footer-nav {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}

@media (max-width: 480px) {
  :root {
    font-size: 14px;
  }

  .container {
    padding: 0 var(--space-md);
  }

  .hero {
    min-height: auto;
    padding: 6rem 0 3rem;
  }

  .trust-badges {
    flex-wrap: wrap;
    gap: var(--space-lg);
  }

  .hero-cta {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

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

  .footer-legal {
    flex-direction: column;
    gap: var(--space-sm);
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* Focus styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Print styles */
@media print {
  .header,
  .hero-bg,
  .scroll-indicator,
  .contact-form,
  .mobile-menu-btn {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  a {
    color: black;
    text-decoration: underline;
  }
}

/* ===================================
   Internationalization (i18n) Styles
   =================================== */

/* Hindi (Devanagari script) */
html[lang="hi"] {
  --font-body: "Noto Sans Devanagari", "DM Sans", -apple-system, BlinkMacSystemFont, sans-serif;
}

html[lang="hi"] body {
  font-family: var(--font-body);
  line-height: 1.8;
}

/* Chinese Simplified */
html[lang="zh"] {
  --font-body: "Noto Sans SC", "DM Sans", -apple-system, BlinkMacSystemFont, "Microsoft YaHei", sans-serif;
}

html[lang="zh"] body {
  font-family: var(--font-body);
  line-height: 1.75;
}

/* Japanese */
html[lang="ja"] {
  --font-body: "Noto Sans JP", "DM Sans", -apple-system, BlinkMacSystemFont, "Hiragino Sans", sans-serif;
}

html[lang="ja"] body {
  font-family: var(--font-body);
  line-height: 1.8;
}

/* Adjust hero title for CJK languages */
html[lang="zh"] .hero h1,
html[lang="ja"] .hero h1,
html[lang="hi"] .hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.4;
}

/* Adjust hero subtitle for longer text in translations */
html[lang="zh"] .hero-subtitle,
html[lang="ja"] .hero-subtitle,
html[lang="hi"] .hero-subtitle {
  font-size: 1rem;
  line-height: 1.85;
}

/* CJK-specific button adjustments */
html[lang="zh"] .btn,
html[lang="ja"] .btn,
html[lang="hi"] .btn {
  letter-spacing: 0;
}

/* Ensure proper text wrapping for CJK */
html[lang="zh"] p,
html[lang="ja"] p,
html[lang="zh"] h1,
html[lang="zh"] h2,
html[lang="zh"] h3,
html[lang="ja"] h1,
html[lang="ja"] h2,
html[lang="ja"] h3 {
  word-break: normal;
  overflow-wrap: break-word;
}

/* Language selector transition effects */
.lang-selector {
  transition: opacity var(--transition-fast);
}

/* Highlight current language in dropdown */
.lang-dropdown button.active::before {
  content: "✓";
  margin-right: 6px;
  font-size: 0.75rem;
}

/* ===================================
   Blog Section Styles
   =================================== */

.blog {
  background: var(--color-bg-light);
}

/* Blog Filters */
.blog-filters {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
}

.blog-filter-btn {
  padding: 0.5rem 1rem;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.blog-filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.blog-filter-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

/* Blog Grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

/* Blog Card */
.blog-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

.blog-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.blog-card-image {
  height: 180px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-medical-teal) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.blog-card-image::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.blog-card-image svg {
  width: 48px;
  height: 48px;
  color: white;
  opacity: 0.8;
  z-index: 1;
}

.blog-card-content {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
}

.blog-card-category {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
}

.blog-card-date {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.blog-card h3 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.125rem;
  line-height: 1.4;
  margin-bottom: var(--space-sm);
  color: var(--color-text-dark);
}

.blog-card-excerpt {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
  flex: 1;
}

.blog-card-author {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.blog-card-author .author-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
}

.blog-card-author span {
  font-size: 0.875rem;
  color: var(--color-text);
}

/* Blog Loading State */
.blog-loading {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-3xl);
  color: var(--color-text-muted);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  margin: 0 auto var(--space-md);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Blog Pagination */
.blog-pagination {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-2xl);
}

.blog-pagination button {
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-card);
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
}

.blog-pagination button:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.blog-pagination button.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.blog-pagination button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Blog Post View */
.blog-post-view {
  max-width: 800px;
  margin: 0 auto;
}

.blog-post-view.hidden {
  display: none;
}

.blog-back-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 0.9375rem;
  cursor: pointer;
  margin-bottom: var(--space-2xl);
  transition: all var(--transition-fast);
}

.blog-back-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.blog-post-full {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.blog-post-header {
  padding: var(--space-2xl);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-medical-teal) 100%);
  color: white;
}

.blog-post-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.blog-post-category {
  background: rgba(255, 255, 255, 0.2);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.blog-post-date {
  font-size: 0.875rem;
  opacity: 0.9;
}

.blog-post-header h1 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  color: white;
  margin-bottom: var(--space-lg);
  line-height: 1.3;
}

.blog-post-author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.blog-post-author .author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 600;
}

.blog-post-author span {
  font-size: 1rem;
}

.blog-post-content {
  padding: var(--space-2xl);
  line-height: 1.8;
  color: var(--color-text);
}

.blog-post-content h3 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.375rem;
  color: var(--color-text-dark);
  margin: var(--space-xl) 0 var(--space-md);
}

.blog-post-content h4 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--color-text-dark);
  margin: var(--space-lg) 0 var(--space-sm);
}

.blog-post-content p {
  margin-bottom: var(--space-md);
}

.blog-post-content ul,
.blog-post-content ol {
  margin: var(--space-md) 0;
  padding-left: var(--space-xl);
}

.blog-post-content li {
  margin-bottom: var(--space-sm);
}

.blog-post-content strong {
  color: var(--color-text-dark);
}

.blog-post-content a {
  color: var(--color-primary);
  text-decoration: underline;
}

.blog-post-tags {
  padding: 0 var(--space-2xl) var(--space-xl);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.blog-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Comments Section */
.comments-section {
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl);
}

.comments-section h3 {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--color-text-dark);
  margin-bottom: var(--space-xl);
}

.comments-section h3 svg {
  color: var(--color-primary);
}

.comments-section h3 span {
  font-weight: 400;
  color: var(--color-text-muted);
  font-size: 1rem;
}

/* Comment Form */
.comment-form {
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.comment-form h4 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text-dark);
  margin-bottom: var(--space-lg);
}

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

.comment-form .form-group {
  margin-bottom: var(--space-md);
}

.comment-form label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.comment-form input,
.comment-form textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-family: var(--font-body);
  background: var(--color-bg-card);
  color: var(--color-text-dark);
  transition: border-color var(--transition-fast);
}

.comment-form input:focus,
.comment-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.comment-form textarea {
  resize: vertical;
  min-height: 100px;
}

.comment-form-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-md);
}

.replying-to {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.replying-to span {
  font-weight: 600;
  color: var(--color-text-dark);
}

.replying-to.hidden {
  display: none;
}

.cancel-reply {
  background: none;
  border: none;
  color: var(--color-primary);
  cursor: pointer;
  font-size: 0.875rem;
  margin-left: var(--space-sm);
}

.cancel-reply:hover {
  text-decoration: underline;
}

/* Comments List */
.comments-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.comment {
  padding: var(--space-lg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.comment-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

.comment-author {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.comment-author .author-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 600;
}

.comment-author-info strong {
  display: block;
  font-size: 0.9375rem;
  color: var(--color-text-dark);
}

.comment-author-info span {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.comment-content {
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.comment-actions {
  display: flex;
  gap: var(--space-md);
}

.reply-btn {
  background: none;
  border: none;
  color: var(--color-primary);
  font-size: 0.875rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.reply-btn:hover {
  text-decoration: underline;
}

/* Nested Replies */
.comment-replies {
  margin-top: var(--space-md);
  padding-left: var(--space-xl);
  border-left: 2px solid var(--color-border);
}

.comment-replies .comment {
  background: var(--color-bg-light);
}

/* No comments state */
.no-comments {
  text-align: center;
  padding: var(--space-2xl);
  color: var(--color-text-muted);
}

.no-comments svg {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-md);
  opacity: 0.5;
}

/* Mobile Responsive for Blog */
@media (max-width: 1024px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .blog-filters {
    justify-content: center;
  }

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

  .blog-post-header {
    padding: var(--space-xl);
  }

  .blog-post-content {
    padding: var(--space-xl);
  }

  .blog-post-tags {
    padding: 0 var(--space-xl) var(--space-lg);
  }

  .comments-section {
    padding: var(--space-xl);
  }

  .comment-form-actions {
    flex-direction: column;
    gap: var(--space-md);
    align-items: stretch;
  }

  .replying-to {
    text-align: center;
  }
}

@media (max-width: 480px) {
  .blog-card-image {
    height: 140px;
  }

  .comment-replies {
    padding-left: var(--space-md);
  }
}

/* ===================================
   Landing Page & Product Page Styles
   =================================== */

/* Centered Hero Text */
.hero-text-centered {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-text-centered .hero-subtitle {
  margin-left: auto;
  margin-right: auto;
  max-width: 650px;
}

.hero-text-centered .hero-cta {
  justify-content: center;
}

.trust-badges-centered {
  justify-content: center;
}

.hero-home .hero-content {
  display: block;
}

/* Products Overview Section */
.products-overview {
  background: var(--color-bg);
}

.product-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2xl);
}

.product-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.product-card-visual {
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.doppler-visual {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-medical-teal) 100%);
}

.hifu-visual {
  background: linear-gradient(135deg, #dc2626 0%, #f97316 100%);
}

.product-icon-large {
  width: 80px;
  height: 80px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.product-icon-large svg {
  width: 40px;
  height: 40px;
  color: white;
}

.product-visual-bg {
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.product-card-content {
  padding: var(--space-xl);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: rgba(0, 102, 204, 0.1);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
  width: fit-content;
}

.product-card h3 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: var(--color-text-dark);
  margin-bottom: var(--space-md);
}

.product-card > .product-card-content > p {
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

.product-highlights {
  list-style: none;
  margin-bottom: var(--space-xl);
  flex: 1;
}

.product-highlights li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  color: var(--color-text);
  font-size: 0.9375rem;
}

.product-highlights svg {
  color: var(--color-accent);
  flex-shrink: 0;
}

.product-card-cta {
  display: flex;
  gap: var(--space-md);
}

.product-card-cta .btn {
  flex: 1;
}

/* About Section Styles */
.about-text {
  margin-bottom: var(--space-xl);
}

.about-text p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.about-stats {
  display: flex;
  gap: var(--space-2xl);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  color: var(--color-primary);
  line-height: 1;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

/* Certifications Showcase */
.certifications-showcase {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  text-align: center;
}

.certifications-showcase h4 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--color-text-dark);
  margin-bottom: var(--space-xl);
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.cert-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-lg);
  background: var(--color-bg-light);
  border-radius: var(--radius-md);
}

.cert-icon {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.cert-text {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* HIFU Page Specific Styles */
.hero-hifu .hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

/* HIFU Illustration */
.hifu-illustration {
  position: relative;
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
}

.hifu-body {
  background: var(--color-bg-card);
  border: 2px solid var(--color-border-strong);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-lg);
}

.hifu-display {
  background: #1e293b;
  border: 2px solid #dc2626;
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.hifu-screen {
  text-align: center;
  margin-bottom: var(--space-md);
}

.power-reading {
  font-family: "Courier New", monospace;
  font-size: 2.5rem;
  color: #f97316;
  text-shadow: 0 0 20px rgba(249, 115, 22, 0.5);
  animation: flicker 4s ease-in-out infinite;
}

.power-unit {
  display: block;
  font-size: 0.875rem;
  color: #fb923c;
}

.hifu-meters {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
}

.meter {
  text-align: center;
}

.meter-bar {
  width: 40px;
  height: 60px;
  background: #334155;
  border-radius: var(--radius-sm);
  position: relative;
  overflow: hidden;
  margin-bottom: var(--space-xs);
}

.meter-bar::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--level, 50%);
  background: linear-gradient(to top, #22c55e, #84cc16);
  transition: height 0.3s ease;
}

.meter span {
  font-size: 0.625rem;
  color: #94a3b8;
  text-transform: uppercase;
}

.hifu-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-lg);
}

.control-knob {
  width: 40px;
  height: 40px;
  background: conic-gradient(from 180deg, var(--color-bg-elevated) 0deg 270deg, #dc2626 270deg 360deg);
  border-radius: 50%;
  border: 2px solid var(--color-border-strong);
}

.control-buttons {
  display: flex;
  gap: var(--space-sm);
}

.led {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #334155;
}

.led-green.active {
  background: #22c55e;
  box-shadow: 0 0 10px #22c55e;
}

.led-yellow {
  background: #334155;
}

.led-red {
  background: #334155;
}

.hifu-connectors {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
}

.connector {
  padding: var(--space-xs) var(--space-md);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.connector.rf-out {
  border-color: #dc2626;
  color: #dc2626;
}

.focus-indicator {
  position: absolute;
  top: -40px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
}

.focus-beam {
  width: 50px;
  height: 70px;
  margin: 0 auto var(--space-sm);
  background: linear-gradient(180deg, #f97316 0%, transparent 100%);
  clip-path: polygon(30% 0%, 70% 0%, 100% 100%, 0% 100%);
  opacity: 0.5;
  animation: pulse 2s ease-in-out infinite;
}

.focus-indicator span {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* HIFU Showcase Device */
.hifu-showcase .device-screen {
  background: #1e293b;
  border-color: #dc2626;
}

.hifu-power {
  color: #f97316 !important;
  text-shadow: 0 0 30px rgba(249, 115, 22, 0.5) !important;
}

.device-meters {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin-top: var(--space-md);
}

.meter-display {
  text-align: center;
}

.meter-label {
  display: block;
  font-size: 0.625rem;
  color: #94a3b8;
  margin-bottom: var(--space-xs);
}

.meter-fill {
  width: 60px;
  height: 8px;
  background: #334155;
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.meter-fill::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--fill, 50%);
  background: linear-gradient(90deg, #22c55e, #84cc16);
  border-radius: var(--radius-full);
}

/* Mobile Responsive for New Sections */
@media (max-width: 1024px) {
  .product-cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background: transparent;
    padding: 0 0 0 var(--space-md);
    display: none;
  }

  .nav-dropdown.active .nav-dropdown-menu {
    display: block;
  }

  .hero-hifu .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-hifu .trust-badges {
    justify-content: center;
  }

  .hero-hifu .hero-cta {
    justify-content: center;
  }

  .about-stats {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-xl);
  }

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

@media (max-width: 480px) {
  .product-card-cta {
    flex-direction: column;
  }

  .about-stats {
    gap: var(--space-lg);
  }

  .stat-number {
    font-size: 2rem;
  }
}