/* ========================================
   SINK CHIP REPAIR - PREMIUM DESIGN
   Color Theme: Deep Indigo + Electric Cyan + Hot Magenta + Solar Gold
   ======================================== */

:root {
  --primary-dark: #0a0118;
  --primary-base: #1a0933;
  --primary-mid: #2d1457;
  --secondary-cyan: #00f5ff;
  --secondary-magenta: #ff2d95;
  --accent-gold: #ffb800;
  --accent-violet: #7b2ff7;
  --text-primary: #ffffff;
  --text-secondary: #c4b5d9;
  --text-muted: #8a7ba3;
  --glass-bg: rgba(26, 9, 51, 0.6);
  --glass-border: rgba(0, 245, 255, 0.15);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --glow-cyan: 0 0 20px rgba(0, 245, 255, 0.5);
  --glow-magenta: 0 0 20px rgba(255, 45, 149, 0.5);
  --glow-gold: 0 0 20px rgba(255, 184, 0, 0.5);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 30px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Inter', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-body);
  background: var(--primary-dark);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}

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

a:hover {
  color: var(--accent-gold);
  text-shadow: 0 0 8px rgba(0, 245, 255, 0.5);
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Background Effects */
.bg-grid {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  background-image: 
    linear-gradient(rgba(0, 245, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 245, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0% { transform: translate(0, 0); }
  100% { transform: translate(60px, 60px); }
}

.particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.particle {
  position: absolute;
  border-radius: 50%;
  animation: float linear infinite;
  opacity: 0.6;
}

@keyframes float {
  0% {
    transform: translateY(100vh) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 0.6;
  }
  90% {
    opacity: 0.6;
  }
  100% {
    transform: translateY(-100px) rotate(720deg);
    opacity: 0;
  }
}

.floating-shapes {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(40px);
  opacity: 0.3;
  animation: shapeFloat 15s ease-in-out infinite;
}

.shape-1 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--secondary-cyan), transparent);
  top: 10%;
  left: -10%;
  animation-delay: 0s;
}

.shape-2 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--secondary-magenta), transparent);
  top: 60%;
  right: -5%;
  animation-delay: 5s;
}

.shape-3 {
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, var(--accent-gold), transparent);
  bottom: 20%;
  left: 30%;
  animation-delay: 10s;
}

.shape-4 {
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, var(--accent-violet), transparent);
  top: 30%;
  right: 20%;
  animation-delay: 3s;
}

.shape-5 {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, var(--secondary-cyan), transparent);
  bottom: 10%;
  right: 30%;
  animation-delay: 7s;
}

@keyframes shapeFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -30px) scale(1.1); }
  50% { transform: translate(-20px, 20px) scale(0.9); }
  75% { transform: translate(20px, 30px) scale(1.05); }
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 15px 0;
  background: rgba(10, 1, 24, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text-primary);
}

.logo-icon {
  font-size: 1.5rem;
  color: var(--secondary-cyan);
  text-shadow: var(--glow-cyan);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.1); }
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 25px;
}

.main-nav a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--secondary-cyan);
  transition: width 0.3s ease;
}

.main-nav a:hover::after {
  width: 100%;
}

.main-nav a:hover {
  color: var(--secondary-cyan);
  text-shadow: none;
}

.nav-cta {
  background: linear-gradient(135deg, var(--secondary-cyan), var(--accent-violet));
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  color: var(--primary-dark) !important;
  font-weight: 600;
}

.nav-cta:hover {
  box-shadow: var(--glow-cyan);
  transform: translateY(-2px);
}

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

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

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

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 100px 20px 50px;
  overflow: hidden;
}

.hero-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 60px;
  max-width: 1200px;
  width: 100%;
  flex-wrap: wrap;
}

.hero-animation {
  flex: 1;
  min-width: 300px;
  max-width: 500px;
  position: relative;
  perspective: 1000px;
}

.sink-svg {
  width: 100%;
  height: auto;
  transform-style: preserve-3d;
  animation: sinkFloat 6s ease-in-out infinite;
}

@keyframes sinkFloat {
  0%, 100% { transform: translateY(0) rotateX(0deg); }
  50% { transform: translateY(-15px) rotateX(2deg); }
}

/* Sink Animation Elements */
.sink-outer {
  animation: sinkPulse 4s ease-in-out infinite;
}

@keyframes sinkPulse {
  0%, 100% { stroke-width: 2; opacity: 1; }
  50% { stroke-width: 2.5; opacity: 0.8; }
}

.sink-inner {
  animation: sinkGlow 3s ease-in-out infinite;
}

@keyframes sinkGlow {
  0%, 100% { stroke-opacity: 0.8; }
  50% { stroke-opacity: 1; }
}

.chip-mark {
  animation: chipPulse 2s ease-in-out infinite;
  stroke-dasharray: 40;
  animation: dashDraw 3s linear infinite, chipPulse 2s ease-in-out infinite;
}

@keyframes dashDraw {
  0% { stroke-dashoffset: 40; }
  100% { stroke-dashoffset: 0; }
}

@keyframes chipPulse {
  0%, 100% { opacity: 1; filter: url(#glow); }
  50% { opacity: 0.5; }
}

.repair-glow {
  animation: repairGlow 3s ease-in-out infinite;
}

@keyframes repairGlow {
  0%, 100% { r: 12; opacity: 0.3; }
  50% { r: 18; opacity: 0.8; }
}

.fill-progress {
  animation: fillProgress 4s ease-in-out infinite;
}

@keyframes fillProgress {
  0% { stroke-dashoffset: 75; }
  50% { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: 75; }
}

/* Water Drops */
.drop {
  animation: dropFall 3s ease-in-out infinite;
}

.drop-1 { animation-delay: 0s; }
.drop-2 { animation-delay: 0.5s; }
.drop-3 { animation-delay: 1s; }
.drop-4 { animation-delay: 1.5s; }
.drop-5 { animation-delay: 2s; }

@keyframes dropFall {
  0% { transform: translateY(0); opacity: 1; r: 3; }
  50% { transform: translateY(20px); opacity: 0.5; }
  100% { transform: translateY(40px); opacity: 0; }
}

/* Sparkles */
.sparkle {
  animation: sparkleRotate 4s linear infinite, sparkleFade 2s ease-in-out infinite;
  transform-origin: center;
}

.s1 { animation-delay: 0s; }
.s2 { animation-delay: 1.3s; }
.s3 { animation-delay: 2.6s; }

@keyframes sparkleRotate {
  0% { transform: rotate(0deg) scale(0.5); opacity: 0; }
  50% { transform: rotate(180deg) scale(1); opacity: 1; }
  100% { transform: rotate(360deg) scale(0.5); opacity: 0; }
}

/* Orbit */
.orbit-ring {
  animation: orbitSpin 20s linear infinite;
  transform-origin: 250px 220px;
}

@keyframes orbitSpin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.orbit-dot {
  animation: dotPulse 2s ease-in-out infinite;
}

.od1 { animation-delay: 0s; }
.od2 { animation-delay: 0.7s; }
.od3 { animation-delay: 1.4s; }

@keyframes dotPulse {
  0%, 100% { r: 3; opacity: 1; }
  50% { r: 5; opacity: 0.6; }
}

/* Glow Orbs */
.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(30px);
  opacity: 0.4;
  animation: orbFloat 8s ease-in-out infinite;
}

.orb-1 {
  width: 100px;
  height: 100px;
  background: var(--secondary-cyan);
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.orb-2 {
  width: 80px;
  height: 80px;
  background: var(--secondary-magenta);
  bottom: 20%;
  right: 10%;
  animation-delay: 2s;
}

.orb-3 {
  width: 60px;
  height: 60px;
  background: var(--accent-gold);
  top: 50%;
  right: 30%;
  animation-delay: 4s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(20px, -20px); }
  66% { transform: translate(-15px, 15px); }
}

/* Hero Text */
.hero-text {
  flex: 1;
  min-width: 300px;
  max-width: 550px;
}

.hero-text h1 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--text-primary), var(--secondary-cyan), var(--accent-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 30px;
  line-height: 1.6;
}

.hero-ctas {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--secondary-cyan), var(--accent-violet));
  color: var(--primary-dark);
  box-shadow: 0 4px 15px rgba(0, 245, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0, 245, 255, 0.5);
  color: var(--primary-dark);
  text-shadow: none;
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  border-color: var(--secondary-cyan);
  background: rgba(0, 245, 255, 0.1);
  color: var(--secondary-cyan);
  box-shadow: var(--glow-cyan);
}

.btn-outline {
  background: transparent;
  color: var(--secondary-cyan);
  border: 1px solid var(--secondary-cyan);
}

.btn-outline:hover {
  background: var(--secondary-cyan);
  color: var(--primary-dark);
  text-shadow: none;
}

.btn-lg {
  padding: 18px 36px;
  font-size: 1.05rem;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--secondary-cyan), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; height: 40px; }
  50% { opacity: 0.5; height: 30px; }
}

/* Main Content */
.main-content {
  position: relative;
  z-index: 1;
  padding: 60px 0 80px;
}

.content-wrapper {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 50px;
  align-items: start;
}

/* TOC Sidebar */
.toc-sidebar {
  position: sticky;
  top: 100px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
}

.toc-inner {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 25px;
  box-shadow: var(--glass-shadow);
}

.toc-title {
  font-family: var(--font-display);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--secondary-cyan);
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--glass-border);
}

.toc-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toc-link {
  display: block;
  padding: 8px 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  transition: var(--transition);
}

.toc-link:hover {
  color: var(--secondary-cyan);
  background: rgba(0, 245, 255, 0.05);
  border-left-color: var(--secondary-cyan);
}

.toc-link.active {
  color: var(--secondary-cyan);
  background: rgba(0, 245, 255, 0.1);
  border-left-color: var(--secondary-cyan);
  font-weight: 500;
}

/* Mobile TOC */
.toc-mobile {
  display: none;
  margin-bottom: 30px;
}

.toc-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 20px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.toc-toggle:hover {
  border-color: var(--secondary-cyan);
}

.toc-toggle svg {
  transition: transform 0.3s ease;
}

.toc-toggle.active svg {
  transform: rotate(180deg);
}

.toc-mobile-nav {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 15px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  margin-top: -1px;
}

.toc-mobile-nav.active {
  display: flex;
}

/* Article Content */
.article-content {
  min-width: 0;
}

.article-content section {
  margin-bottom: 60px;
  padding-top: 20px;
}

.article-content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
  position: relative;
  padding-bottom: 15px;
}

.article-content h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--secondary-cyan), var(--secondary-magenta));
  border-radius: 2px;
}

.article-content h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 30px 0 12px;
  color: var(--accent-gold);
}

.article-content h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--secondary-cyan);
}

.article-content p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 1rem;
  line-height: 1.8;
}

.article-content ul, .article-content ol {
  margin: 16px 0;
  padding-left: 20px;
}

.article-content li {
  color: var(--text-secondary);
  margin-bottom: 8px;
  line-height: 1.7;
}

/* Info Card */
.info-card {
  background: linear-gradient(135deg, rgba(0, 245, 255, 0.1), rgba(123, 47, 247, 0.1));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 25px;
  margin: 25px 0;
  box-shadow: var(--glass-shadow);
}

.info-card h4 {
  font-family: var(--font-display);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.info-card ul {
  list-style: none;
  padding: 0;
}

.info-card li {
  padding: 6px 0 6px 20px;
  position: relative;
}

.info-card li::before {
  content: '◆';
  position: absolute;
  left: 0;
  color: var(--secondary-cyan);
  font-size: 0.7rem;
}

/* Glass Card */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 25px;
  transition: var(--transition);
  box-shadow: var(--glass-shadow);
}

.glass-card:hover {
  transform: translateY(-5px);
  border-color: var(--secondary-cyan);
  box-shadow: 0 15px 40px rgba(0, 245, 255, 0.2);
}

.glass-card-premium {
  background: linear-gradient(135deg, rgba(26, 9, 51, 0.9), rgba(45, 20, 87, 0.9));
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 50px 40px;
  position: relative;
  overflow: hidden;
  text-align: center;
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin: 25px 0;
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 12px;
  display: block;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.feature-card p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* Process Animation */
.process-animation {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 30px;
  margin: 30px 0;
}

.process-steps {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 25px;
  flex-wrap: wrap;
}

.p-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 10px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  flex: 1;
  min-width: 80px;
}

.p-step:hover {
  background: rgba(0, 245, 255, 0.1);
}

.p-step.active {
  background: rgba(0, 245, 255, 0.15);
}

.step-indicator {
  width: 35px;
  height: 35px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  background: var(--primary-mid);
  border: 2px solid var(--glass-border);
  transition: var(--transition);
}

.p-step.active .step-indicator {
  background: var(--secondary-cyan);
  border-color: var(--secondary-cyan);
  color: var(--primary-dark);
  box-shadow: var(--glow-cyan);
}

.p-step span {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
}

.p-step.active span {
  color: var(--secondary-cyan);
  font-weight: 500;
}

.process-visual {
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--radius-md);
  padding: 20px;
  overflow: hidden;
}

.process-svg {
  width: 100%;
  height: auto;
}

.proc-progress {
  transition: width 0.5s ease;
}

.proc-clean, .proc-fill, .proc-sand, .proc-polish {
  transition: opacity 0.5s ease;
}

/* Benefits */
.benefits-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.benefit-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: var(--transition);
}

.benefit-item:hover {
  border-color: var(--secondary-cyan);
  transform: translateX(5px);
}

.benefit-num {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent-gold);
  opacity: 0.7;
  line-height: 1;
}

.benefit-content h3 {
  font-size: 1rem;
  margin: 0 0 5px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-weight: 600;
}

.benefit-content p {
  margin: 0;
  font-size: 0.9rem;
}

/* Comparison Table */
.comparison-table {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 25px 0;
}

.comp-header {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 15px;
  padding: 15px 20px;
  background: rgba(0, 245, 255, 0.1);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.comp-row {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 15px;
  padding: 15px 20px;
  border-top: 1px solid var(--glass-border);
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.comp-row:hover {
  background: rgba(0, 245, 255, 0.05);
}

.comp-col {
  padding: 5px 0;
}

/* Tips Grid */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 15px;
  margin: 25px 0;
}

.tip-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: var(--transition);
}

.tip-card:hover {
  border-color: var(--accent-gold);
  transform: translateY(-3px);
}

.tip-icon {
  width: 35px;
  height: 35px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--secondary-cyan), var(--accent-violet));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 12px;
}

.tip-card h4 {
  font-size: 0.95rem;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.tip-card p {
  font-size: 0.85rem;
  margin: 0;
}

/* Why Us */
.why-us-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin: 25px 0;
}

.why-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.why-card p {
  font-size: 0.9rem;
  margin: 0;
}

/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 25px 0;
}

.faq-item {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(0, 245, 255, 0.3);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--secondary-cyan);
}

.faq-question svg {
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
}

.faq-question[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-answer.active {
  max-height: 300px;
  padding: 0 20px 18px;
}

.faq-answer p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Conclusion */
.conclusion {
  background: linear-gradient(135deg, rgba(0, 245, 255, 0.05), rgba(255, 45, 149, 0.05));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

/* CTA Section */
.cta-section {
  position: relative;
  z-index: 1;
  padding: 80px 0;
}

.cta-card h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 10px;
  background: linear-gradient(135deg, var(--secondary-cyan), var(--accent-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cta-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 35px;
}

.cta-glow {
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(0, 245, 255, 0.1), transparent 70%);
  pointer-events: none;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 15px;
  margin: 30px 0;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
  text-decoration: none;
}

.contact-item:hover {
  border-color: var(--secondary-cyan);
  background: rgba(0, 245, 255, 0.1);
  transform: translateY(-3px);
  box-shadow: var(--glow-cyan);
}

.contact-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--secondary-cyan), var(--accent-violet));
  border-radius: var(--radius-sm);
  color: var(--primary-dark);
  flex-shrink: 0;
}

.contact-info {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.contact-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.contact-value {
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 500;
}

/* Social Links */
.social-links {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin: 25px 0;
}

.social-link {
  width: 45px;
  height: 45px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  color: var(--text-secondary);
  transition: var(--transition);
}

.social-link:hover {
  color: var(--primary-dark);
  transform: translateY(-3px) scale(1.1);
}

.social-link:nth-child(1):hover {
  background: #1877f2;
  border-color: #1877f2;
  box-shadow: 0 0 20px rgba(24, 119, 242, 0.5);
}

.social-link:nth-child(2):hover {
  background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
  border-color: #dc2743;
  box-shadow: 0 0 20px rgba(220, 39, 67, 0.5);
}

.social-link:nth-child(3):hover {
  background: #e60023;
  border-color: #e60023;
  box-shadow: 0 0 20px rgba(230, 0, 35, 0.5);
}

.social-link svg {
  width: 20px;
  height: 20px;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
  margin-top: 30px;
}

/* Footer */
.site-footer {
  position: relative;
  z-index: 1;
  padding: 50px 0 20px;
  border-top: 1px solid var(--glass-border);
  background: rgba(10, 1, 24, 0.8);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
  margin-bottom: 30px;
}

.footer-brand h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: var(--secondary-cyan);
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-contact p {
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.footer-contact a {
  color: var(--text-secondary);
}

.footer-contact a:hover {
  color: var(--secondary-cyan);
}

.footer-bottom {
  padding-top: 20px;
  border-top: 1px solid var(--glass-border);
  text-align: center;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* Responsive Design */
@media (max-width: 992px) {
  .content-wrapper {
    grid-template-columns: 1fr;
  }
  
  .toc-sidebar {
    display: none;
  }
  
  .toc-mobile {
    display: block;
  }
  
  .hero-content {
    flex-direction: column;
    text-align: center;
  }
  
  .hero-ctas {
    justify-content: center;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(10, 1, 24, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 20px;
    gap: 15px;
    transform: translateY(-120%);
    transition: transform 0.3s ease;
    border-bottom: 1px solid var(--glass-border);
  }
  
  .main-nav.active {
    transform: translateY(0);
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .hero {
    padding: 80px 15px 40px;
    min-height: auto;
  }
  
  .hero-text h1 {
    font-size: 1.6rem;
  }
  
  .process-steps {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .p-step {
    min-width: 60px;
    flex: 0 0 auto;
  }
  
  .glass-card-premium {
    padding: 30px 20px;
  }
  
  .comp-header, .comp-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  
  .comp-header .comp-col:first-child {
    font-weight: 700;
    color: var(--secondary-cyan);
  }
  
  .benefit-item {
    flex-direction: column;
    gap: 10px;
  }
  
  .scroll-indicator {
    display: none;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }
  
  .article-content section {
    margin-bottom: 40px;
  }
  
  .conclusion {
    padding: 25px;
  }
  
  .btn {
    padding: 12px 22px;
    font-size: 0.9rem;
  }
  
  .btn-lg {
    padding: 14px 28px;
  }
}

/* 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 States */
:focus-visible {
  outline: 2px solid var(--secondary-cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Selection */
::selection {
  background: rgba(0, 245, 255, 0.3);
  color: var(--text-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--primary-dark);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--secondary-cyan), var(--accent-violet));
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--secondary-cyan);
}