/* ==========================================================================
   endpointlab Design System & Stylesheet (index.css)
   ========================================================================== */

/* 1. CSS Variable Tokens */
:root {
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Outfit', sans-serif;

  /* Color Palette */
  --bg-primary: #05070c;
  --bg-secondary: rgba(13, 18, 30, 0.6);
  --bg-card: rgba(255, 255, 255, 0.03);
  
  --border-light: rgba(255, 255, 255, 0.08);
  --border-active: rgba(0, 242, 254, 0.3);

  --text-primary: #ffffff;
  --text-secondary: #8f9cae;
  --text-muted: #4e5d78;

  /* Neon Glow Accents */
  --color-blue: #00f2fe;
  --color-purple: #9b51e0;
  --color-emerald: #10b981;
  --color-red: #ef4444;
  --color-orange: #f59e0b;
  --color-orange-brand: #ff6a00;
  
  --gradient-neon: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
  --gradient-glow: linear-gradient(135deg, rgba(0, 242, 254, 0.15) 0%, rgba(79, 172, 254, 0.15) 100%);
  --gradient-sunset: linear-gradient(135deg, #f02fc2 0%, #6094ea 100%);
  --gradient-orange: linear-gradient(135deg, #ff9f43 0%, #ff6a00 100%);
  
  --shadow-neon: 0 0 20px rgba(0, 242, 254, 0.25);
  --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 2. Global Reset & Base Style */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-main);
  overflow-x: hidden;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  background-color: var(--bg-primary);
}

/* Background Glowing Orbs (Dynamic depth) */
.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(140px);
  z-index: -1;
  pointer-events: none;
  opacity: 0.45;
  transition: all 1.2s ease;
}

.bg-glow-1 {
  width: 45vw;
  height: 45vw;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.25) 0%, rgba(0, 0, 0, 0) 70%);
  top: -10%;
  right: -5%;
}

.bg-glow-2 {
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, rgba(155, 81, 224, 0.2) 0%, rgba(0, 0, 0, 0) 70%);
  top: 40%;
  left: -15%;
}

.bg-glow-3 {
  width: 35vw;
  height: 35vw;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.15) 0%, rgba(0, 0, 0, 0) 70%);
  bottom: -5%;
  right: 15%;
}

/* 3. Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(5, 7, 12, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition-fast);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 800;
  text-decoration: none;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.logo-img {
  height: 36px;
  width: auto;
  object-fit: contain;
}

.logo span {
  background: var(--gradient-orange);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav {
  display: flex;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.03);
  padding: 0.3rem;
  border-radius: 30px;
  border: 1px solid var(--border-light);
}

.nav-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.6rem 1.25rem;
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition-fast);
}

.nav-btn:hover {
  color: var(--text-primary);
}

.nav-btn.active {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.header-action {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.domain-badge {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-blue);
  background: rgba(0, 242, 254, 0.08);
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  border: 1px solid rgba(0, 242, 254, 0.15);
}

/* 4. Common Layout / SPA Tabs */
.main-content {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 8rem 2rem 5rem 2rem;
}

.tab-section {
  display: none;
  opacity: 0;
  transform: translateY(15px);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.tab-section.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.section-container {
  padding: 2rem 0;
}

.section-header {
  margin-bottom: 3rem;
}

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

.section-badge {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--color-blue);
  text-transform: uppercase;
  margin-bottom: 0.8rem;
  display: inline-block;
}

.section-title {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 700px;
}

.text-center .section-subtitle {
  margin: 0 auto;
}

/* Max Width Helpers */
.max-w-sm {
  max-width: 650px;
  margin: 0 auto;
}

/* 5. Buttons Styling */
.cta-btn {
  background: var(--gradient-neon);
  color: #000;
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.9rem 2rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-neon);
  transition: var(--transition-fast);
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 25px rgba(0, 242, 254, 0.4);
}

.cta-btn-sm {
  background: var(--gradient-neon);
  color: #000;
  font-family: var(--font-main);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.55rem 1.2rem;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: var(--transition-fast);
}

.cta-btn-sm:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.35);
}

.secondary-btn {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 500;
  padding: 0.9rem 2rem;
  border-radius: 8px;
  border: 1px solid var(--border-light);
  cursor: pointer;
  transition: var(--transition-fast);
}

.secondary-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

/* 6. Home: Hero Section */
.hero-section {
  text-align: center;
  padding: 4rem 0 5rem 0;
}

.hero-title {
  font-family: var(--font-display);
  font-size: 4.8rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -2px;
  margin-bottom: 2rem;
}

.gradient-text {
  background: linear-gradient(135deg, #00f2fe 30%, #4facfe 70%, #d946ef 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.35rem;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 800px;
  margin: 0 auto 3rem auto;
  font-weight: 300;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
}

/* Home Page: End-to-End Performance Visual Pipeline Styles */
.pipeline-visual-container {
  margin: 5rem 0;
  padding: 4rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 20px;
  box-shadow: var(--shadow-card);
  text-align: center;
}

.pipeline-visual-header {
  margin-bottom: 3rem;
}

.pipeline-svg-wrapper {
  max-width: 900px;
  margin: 0 auto;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 12px;
  padding: 2.2rem;
  border: 1px solid rgba(255, 255, 255, 0.03);
}

.pipeline-svg {
  width: 100%;
  height: auto;
  overflow: visible;
}

/* Neon Pulse Animation for Path Flows */
.pulse-path-1 {
  animation: pulse-flow 25s infinite linear;
}

.pulse-path-2 {
  animation: pulse-flow 20s infinite linear;
}

@keyframes pulse-flow {
  0% {
    stroke-dashoffset: 200;
  }
  100% {
    stroke-dashoffset: 0;
  }
}

.pipeline-node {
  transition: transform var(--transition-normal);
  cursor: pointer;
}

.pipeline-node:hover {
  transform: scale(1.08) translateY(-2px);
}

.pipeline-node circle {
  transition: stroke-width var(--transition-fast), filter var(--transition-fast);
}

.pipeline-node:hover circle {
  stroke-width: 4px;
}

.pipeline-node text {
  font-family: var(--font-display);
  pointer-events: none;
  user-select: none;
}

/* Home Page: Vision & Offerings Styles */
.brand-vision-section {
  margin: 2rem 0 5rem 0;
}

.brand-vision-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.vision-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 16px;
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-normal);
}

.vision-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.vision-number {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.03);
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  user-select: none;
  line-height: 1;
}

.vision-card h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.vision-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.vision-glow-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
}

/* Offerings Summary Styles */
.offerings-summary-section {
  margin-bottom: 6rem;
  text-align: center;
}

.offerings-header {
  margin-bottom: 3.5rem;
}

.offerings-header h2 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 800;
  margin: 0.5rem 0 1rem 0;
}

.offerings-header p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.6;
}

.offerings-summary-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  max-width: 1000px;
  margin: 0 auto;
}

.offering-summary-card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.01) 0%, rgba(255, 255, 255, 0.03) 100%);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  padding: 3rem 2.5rem;
  text-align: left;
  cursor: pointer;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.25rem;
}

.offering-summary-card:hover {
  transform: scale(1.02) translateY(-2px);
  border-color: var(--color-orange-brand);
  box-shadow: 0 10px 40px rgba(255, 106, 0, 0.1);
}

.offering-badge {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.3rem 0.75rem;
  border-radius: 30px;
  letter-spacing: 1px;
}

.offering-badge.sol-color {
  background: rgba(255, 106, 0, 0.1);
  color: #ff9f43;
  border: 1px solid rgba(255, 106, 0, 0.25);
}

.offering-badge.srv-color {
  background: rgba(0, 242, 254, 0.08);
  color: var(--color-blue);
  border: 1px solid rgba(0, 242, 254, 0.2);
}

.offering-summary-card h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
}

.offering-summary-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 0.5rem;
}

.offering-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-orange-brand);
  transition: transform var(--transition-fast);
}

.offering-summary-card:hover .offering-link {
  transform: translateX(5px);
}

/* 7. Home: Interactive Simulator */
.simulator-wrapper {
  background: var(--bg-secondary);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  padding: 3rem;
  box-shadow: var(--shadow-card);
  margin-top: 2rem;
}

.simulator-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.simulator-badge {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--color-blue);
  letter-spacing: 3px;
  margin-bottom: 0.8rem;
}

.simulator-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 0.8rem;
}

.simulator-desc {
  color: var(--text-secondary);
  font-size: 1rem;
}

.simulator-controls {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.toggle-mode-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.8rem 1.8rem;
  border-radius: 12px;
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.toggle-mode-btn:hover {
  background: rgba(255, 255, 255, 0.05);
}

.toggle-mode-btn.unoptimized.active {
  border-color: rgba(239, 68, 68, 0.4);
  background: rgba(239, 68, 68, 0.06);
  color: #ff6b6b;
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.15);
}

.toggle-mode-btn.optimized.active {
  border-color: rgba(16, 185, 129, 0.4);
  background: rgba(16, 185, 129, 0.06);
  color: #34d399;
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.15);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.dot.red { background-color: var(--color-red); }
.dot.green { background-color: var(--color-emerald); }

.simulator-dashboard {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 14px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 150px;
  transition: all var(--transition-normal);
}

.metric-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.metric-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.metric-status {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.status-bad {
  background: rgba(239, 68, 68, 0.1);
  color: #ff6b6b;
}

.status-good {
  background: rgba(16, 185, 129, 0.1);
  color: #34d399;
}

.metric-value {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
  transition: color var(--transition-fast);
}

.progress-bar-container {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  border-radius: 3px;
  transition: width var(--transition-normal), background var(--transition-normal);
}

.bar-bad { background: var(--color-red); }
.bar-good { background: var(--color-emerald); }

/* Score Circle layout */
.score-card {
  align-items: center;
  justify-content: center;
  text-align: center;
}

.score-circle-container {
  position: relative;
  width: 110px;
  height: 110px;
  margin-top: 0.5rem;
}

.score-circle-svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}

.score-circle-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.04);
  stroke-width: 8;
}

.score-circle-progress {
  fill: none;
  stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dashoffset var(--transition-normal), stroke var(--transition-normal);
}

.circle-bad { stroke: var(--color-red); }
.circle-good { stroke: var(--color-emerald); }

.score-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  transition: color var(--transition-fast);
}

.text-bad { color: #ff6b6b; }
.text-good { color: #34d399; }

/* Demo Simulation Box */
.simulation-demo-box {
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 1.5rem;
  background: rgba(0, 0, 0, 0.2);
}

.demo-box-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 1rem;
}

.demo-canvas {
  height: 160px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.01);
}

.demo-element-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 255, 255, 0.05);
  border-top-color: var(--color-blue);
  border-radius: 50%;
  animation: spin 1s infinite linear;
  display: block;
}

.demo-element-card {
  width: 200px;
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  display: none;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.skeleton {
  background: linear-gradient(90deg, rgba(255,255,255,0.03) 25%, rgba(255,255,255,0.08) 50%, rgba(255,255,255,0.03) 75%);
  background-size: 200% 100%;
  animation: loading-skeleton 1.5s infinite;
  border-radius: 4px;
  margin-bottom: 0.6rem;
}

.skeleton-title { height: 16px; width: 60%; margin-bottom: 1rem; }
.skeleton-line { height: 10px; width: 100%; }
.skeleton-line-short { height: 10px; width: 40%; margin-bottom: 0; }

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

@keyframes loading-skeleton {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* About Page: Detailed Corporate Story Styling */
.about-company-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 4rem;
}

.about-text-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 20px;
  padding: 3rem;
  box-shadow: var(--shadow-card);
}

.about-text-card h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--color-orange-brand);
}

.about-text-card p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.about-text-card p:last-child {
  margin-bottom: 0;
}

.about-value-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.about-value-list li {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.about-value-list li strong {
  font-size: 1.05rem;
  color: var(--text-primary);
  font-weight: 600;
}

.about-value-list li p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 0;
}

@media (max-width: 1024px) {
  .about-company-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* 8. About Section Styling - Solutions & Services */
.services-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 4rem;
}

.service-category-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 20px;
  padding: 3rem;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-normal);
}

.service-category-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.5);
}

.category-header {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-light);
}

.category-icon {
  width: 54px;
  height: 54px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.category-icon.orange-glow {
  background: rgba(255, 106, 0, 0.1);
  border: 1px solid rgba(255, 106, 0, 0.25);
  color: var(--color-orange-brand);
  box-shadow: 0 0 15px rgba(255, 106, 0, 0.15);
}

.category-icon.blue-glow {
  background: var(--gradient-glow);
  border: 1px solid rgba(0, 242, 254, 0.25);
  color: var(--color-blue);
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.15);
}

.category-title-area h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.category-title-area p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.category-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.list-item {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.item-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.item-title h4 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
}

.badge-sol, .badge-srv {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-sol {
  background: rgba(255, 106, 0, 0.12);
  color: #ff9f43;
  border: 1px solid rgba(255, 106, 0, 0.25);
}

.badge-srv {
  background: rgba(0, 242, 254, 0.08);
  color: var(--color-blue);
  border: 1px solid rgba(0, 242, 254, 0.2);
}

.list-item p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Nested List for 2-2 Sub-services */
.nested-list {
  list-style: none;
  margin: 1rem 0 0 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  border-left: 1px dashed rgba(255, 255, 255, 0.15);
  padding-left: 1.25rem;
}

.nested-list li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.bullet-dot {
  width: 6px;
  height: 6px;
  background-color: var(--color-orange-brand);
  border-radius: 50%;
  margin-top: 0.45rem;
  flex-shrink: 0;
}

.nested-content strong {
  font-size: 0.95rem;
  color: var(--text-primary);
  display: block;
  margin-bottom: 0.2rem;
}

.nested-content p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0;
  line-height: 1.5;
}

.vision-box {
  background: linear-gradient(135deg, rgba(155, 81, 224, 0.08) 0%, rgba(0, 242, 254, 0.05) 100%);
  border: 1px solid rgba(155, 81, 224, 0.15);
  border-radius: 16px;
  padding: 3rem;
  position: relative;
  overflow: hidden;
}

.vision-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.vision-box h4 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-blue);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.vision-box p {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--text-primary);
  font-weight: 300;
  font-style: italic;
}

/* 9. Guidelines Section (MD Viewer) */
.guidelines-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 3rem;
  align-items: start;
}

.guidelines-sidebar {
  position: sticky;
  top: 7rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 14px;
  padding: 1.75rem;
  max-height: calc(100vh - 10rem);
  overflow-y: auto;
}

.sidebar-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-light);
}

.sidebar-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.sidebar-item a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  transition: var(--transition-fast);
  line-height: 1.4;
}

.sidebar-item a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.02);
}

.sidebar-item.active a {
  color: var(--color-blue);
  background: rgba(0, 242, 254, 0.05);
  font-weight: 600;
}

.guidelines-viewer {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 4rem;
  min-height: 500px;
  box-shadow: var(--shadow-card);
}

.viewer-loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  height: 350px;
  color: var(--text-secondary);
}

.spinner {
  width: 50px;
  height: 50px;
  border: 3px solid rgba(255, 255, 255, 0.05);
  border-top-color: var(--color-blue);
  border-radius: 50%;
  animation: spin 1s infinite linear;
}

/* Markdown styling embedded in guidelines-content */
.markdown-body {
  line-height: 1.7;
  font-size: 1.05rem;
  color: #e2e8f0;
}

.markdown-body h1 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-light);
}

.markdown-body h2 {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 700;
  margin: 2.5rem 0 1.25rem 0;
  color: var(--text-primary);
}

.markdown-body h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin: 2rem 0 1rem 0;
  color: var(--color-blue);
}

.markdown-body p {
  margin-bottom: 1.25rem;
  color: var(--text-secondary);
}

.markdown-body blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.5rem;
  border-left: 4px solid var(--color-blue);
  background: rgba(0, 242, 254, 0.03);
  border-radius: 0 8px 8px 0;
}

.markdown-body blockquote p {
  margin-bottom: 0;
  color: var(--text-primary);
  font-weight: 500;
}

.markdown-body ul, .markdown-body ol {
  margin: 0 0 1.5rem 1.5rem;
  color: var(--text-secondary);
}

.markdown-body li {
  margin-bottom: 0.5rem;
}

.markdown-body pre {
  background: rgba(0, 0, 0, 0.3) !important;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 1.5rem;
  margin: 1.5rem 0;
  overflow-x: auto;
}

.markdown-body code {
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.9rem;
  background: rgba(255, 255, 255, 0.05);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  color: #f6e05e;
}

.markdown-body pre code {
  background: transparent;
  padding: 0;
  border-radius: 0;
  color: inherit;
}

/* Tables */
.markdown-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
}

.markdown-body th, .markdown-body td {
  padding: 0.8rem 1rem;
  border: 1px solid var(--border-light);
  text-align: left;
}

.markdown-body th {
  background: rgba(255, 255, 255, 0.02);
  font-weight: 600;
  color: var(--text-primary);
}

.markdown-body td {
  color: var(--text-secondary);
}

/* 10. Contact Section (Form) */
.contact-form-wrapper {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 20px;
  padding: 3.5rem;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
  transition: opacity var(--transition-fast);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
}

.form-group input, 
.form-group select, 
.form-group textarea {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 0.9rem 1.25rem;
  font-family: var(--font-main);
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition-fast);
}

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
  border-color: var(--color-blue);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.1);
}

.form-group select {
  cursor: pointer;
}

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

.submit-btn {
  background: var(--gradient-neon);
  color: #000;
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 600;
  padding: 1rem 2rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-neon);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.75rem;
  transition: var(--transition-fast);
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 25px rgba(0, 242, 254, 0.4);
}

/* Success State Screen */
.contact-success {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #0d121e;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem;
  z-index: 10;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.contact-success.active {
  display: flex;
  opacity: 1;
}

.success-icon {
  color: var(--color-emerald);
  margin-bottom: 1.5rem;
  background: rgba(16, 185, 129, 0.08);
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(16, 185, 129, 0.2);
  box-shadow: 0 0 25px rgba(16, 185, 129, 0.1);
}

.contact-success h3 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 0.8rem;
}

.contact-success p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 400px;
}

/* 11. Footer */
.footer {
  border-top: 1px solid var(--border-light);
  background: rgba(5, 7, 12, 0.8);
  padding: 3.5rem 2rem;
  margin-top: 5rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  text-align: center;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  justify-content: center;
}

.logo-img-sm {
  height: 26px;
  width: auto;
  object-fit: contain;
}

.footer-logo span {
  background: var(--gradient-orange);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.footer-info {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.6;
}

.footer-info a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-fast);
}

.footer-info a:hover {
  color: var(--color-blue);
}

/* 12. Responsive Design (Media Queries) */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 3.8rem;
  }
  
  .guidelines-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .guidelines-sidebar {
    position: static;
    max-height: none;
    overflow-y: visible;
  }

  .sidebar-menu {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .guidelines-viewer {
    padding: 2.5rem;
  }
}

@media (max-width: 768px) {
  .header-container {
    padding: 1rem 1.5rem;
  }

  .header-action {
    display: none; /* Hide Badge & CTA on small mobile to save space */
  }

  .main-content {
    padding-top: 6.5rem;
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .hero-title {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
  }

  .hero-subtitle {
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
  }

  .hero-actions {
    flex-direction: column;
    gap: 1rem;
    align-items: stretch;
  }

  .simulator-wrapper {
    padding: 1.75rem;
  }

  .simulator-controls {
    flex-direction: column;
    gap: 0.75rem;
  }

  .toggle-mode-btn {
    justify-content: center;
  }

  .metric-card {
    min-height: 130px;
    padding: 1.25rem;
  }

  .metric-value {
    font-size: 1.8rem;
  }

  .score-circle-container {
    width: 90px;
    height: 90px;
  }

  .score-text {
    font-size: 1.65rem;
  }

  .demo-canvas {
    height: 120px;
    gap: 1rem;
  }

  .demo-element-card {
    width: 130px;
    padding: 0.8rem;
  }

  .about-card {
    padding: 2rem;
  }

  .vision-box {
    padding: 2rem 1.5rem;
  }

  .vision-box p {
    font-size: 1rem;
  }

  .contact-form-wrapper {
    padding: 2rem;
  }

  /* SVG Pipeline Mobile Optimization */
  .pipeline-visual-container {
    padding: 2.5rem 1rem;
  }
  .pipeline-svg-wrapper {
    padding: 1rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .pipeline-svg {
    min-width: 750px; /* 확보된 최소 너비로 텍스트와 원 크기를 유지하여 안 찌그러지게 보장 */
    height: auto;
  }

  /* Category Card Mobile Anti-squeeze */
  .service-category-card, .about-text-card {
    padding: 2.2rem 1.4rem;
  }
  .category-header {
    gap: 1rem;
    margin-bottom: 1.5rem;
  }
  .nested-list {
    margin-left: 0.5rem;
    padding-left: 0.75rem;
  }
}