/* ==========================================================================
   Dataworks - Timor Ossevorth | Personal Consulting Website Styles
   ========================================================================== */

:root {
  /* Color Palette - Dark Theme (Default) - More Neutral Gray/Zinc */
  --bg-primary: #1d1e22;
  --bg-secondary: #25272c;
  --bg-card: rgba(45, 48, 56, 0.7);
  --bg-card-hover: rgba(62, 66, 77, 0.85);
  --bg-glass: rgba(29, 30, 34, 0.75);
  
  --border-color: rgba(255, 255, 255, 0.12);
  --border-highlight: rgba(56, 189, 248, 0.3);
  
  --text-main: #f4f4f5;
  --text-muted: #a1a1aa;
  --text-dim: #71717a;
  
  --accent-cyan: #38bdf8;
  --accent-blue: #3b82f6;
  --accent-indigo: #6366f1;
  --accent-purple: #8b5cf6;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  
  --gradient-hero: linear-gradient(135deg, #38bdf8 0%, #3b82f6 50%, #8b5cf6 100%);
  --gradient-hero-glow: radial-gradient(circle at 50% 20%, rgba(56, 189, 248, 0.15) 0%, transparent 60%);
  --gradient-card: linear-gradient(180deg, rgba(62, 66, 77, 0.5) 0%, rgba(45, 48, 56, 0.8) 100%);
  --gradient-glow: radial-gradient(circle, rgba(56, 189, 248, 0.15) 0%, rgba(0, 0, 0, 0) 70%);
  --gradient-contact: radial-gradient(circle at 50% 50%, rgba(100, 116, 139, 0.15) 0%, rgba(37, 39, 44, 0.95) 100%);

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 30px rgba(56, 189, 248, 0.2);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(241, 245, 249, 1);
  --bg-glass: rgba(255, 255, 255, 0.8);
  
  --border-color: rgba(226, 232, 240, 0.8);
  --border-highlight: rgba(37, 99, 235, 0.3);
  
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #94a3b8;
  
  --accent-cyan: #0284c7;
  --accent-blue: #2563eb;
  
  --gradient-hero-glow: radial-gradient(circle at 50% 20%, rgba(37, 99, 235, 0.08) 0%, transparent 60%);
  --gradient-contact: radial-gradient(circle at 50% 50%, rgba(226, 232, 240, 0.6) 0%, rgba(241, 245, 249, 0.95) 100%);
  --shadow-glow: 0 0 30px rgba(37, 99, 235, 0.15);
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Background Canvas */
#hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.6;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

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

a:hover {
  color: var(--accent-blue);
}

/* Layout Utilities */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-padding {
  padding: 6rem 0;
}

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

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  background: rgba(56, 189, 248, 0.1);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.25);
  backdrop-filter: blur(8px);
}

.badge-emerald {
  background: rgba(16, 185, 129, 0.1);
  color: var(--accent-emerald);
  border-color: rgba(16, 185, 129, 0.25);
  border-radius: 8px;
}

/* Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: var(--bg-glass);
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-normal);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.03em;
}

.brand-icon {
  width: 38px;
  height: 38px;
  background: var(--gradient-hero);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 900;
  font-size: 1.1rem;
  box-shadow: 0 4px 12px rgba(56, 189, 248, 0.3);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.2rem;
  list-style: none;
  margin-right: 2.5rem;
}

.nav-link {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-main);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-cyan);
  border-radius: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.theme-toggle-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  width: 40px;
  height: 40px;
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.6rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
}

.btn-primary {
  background: var(--gradient-hero);
  color: white;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 35px rgba(56, 189, 248, 0.4);
  color: white;
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  border-color: var(--accent-cyan);
  background: rgba(56, 189, 248, 0.08);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

/* Mobile Nav Button */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero-section {
  position: relative;
  min-height: 100vh;
  padding-top: 130px;
  padding-bottom: 80px;
  display: flex;
  align-items: center;
  background: var(--gradient-hero-glow);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content h1 {
  font-size: 3.4rem;
  font-weight: 800;
  margin: 1.2rem 0;
  letter-spacing: -0.03em;
}

.hero-content p.subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 620px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: 1.2rem;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.hero-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

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

.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-main);
  font-family: var(--font-mono);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-top: 0.2rem;
}

/* Hero Interactive Card Widget */
.hero-widget {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 1.8rem;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.hero-widget::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-hero);
}

.widget-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.widget-title {
  font-size: 1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 10px var(--accent-emerald);
  animation: pulseGlow 2s infinite;
}

@keyframes pulseGlow {
  0% { opacity: 0.5; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.1); }
  100% { opacity: 0.5; transform: scale(0.9); }
}

.widget-pipeline {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.pipeline-stage {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all var(--transition-fast);
}

.pipeline-stage:hover {
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
}

.stage-info {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.stage-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 700;
}

.stage-bronze .stage-icon { background: rgba(245, 158, 11, 0.15); color: var(--accent-amber); }
.stage-silver .stage-icon { background: rgba(148, 163, 184, 0.15); color: #cbd5e1; }
.stage-gold .stage-icon { background: rgba(56, 189, 248, 0.15); color: var(--accent-cyan); }

.stage-name {
  font-weight: 600;
  font-size: 0.9rem;
}

.stage-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.stage-metric {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

/* Client Logos / Trust Banner */
.clients-banner {
  padding: 2.5rem 0;
  background: var(--bg-card);
  border-y: 1px solid var(--border-color);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.clients-banner-title {
  text-align: center;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.client-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 3rem;
  flex-wrap: wrap;
}

.client-logo-item {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-muted);
  letter-spacing: -0.02em;
  opacity: 0.7;
  transition: all var(--transition-fast);
}

.client-logo-item:hover {
  opacity: 1;
  color: var(--text-main);
  transform: translateY(-2px);
}

/* Section Header */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4rem auto;
}

.section-header h2 {
  font-size: 2.4rem;
  margin: 0.8rem 0 1rem 0;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  padding: 2.2rem;
  transition: all var(--transition-normal);
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  position: relative;
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-md);
  background: var(--bg-card-hover);
}

.service-icon-box {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--accent-cyan);
  margin-bottom: 1.5rem;
}

.service-card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.8rem;
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
}

.tech-tag {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  font-weight: 500;
}

/* Interactive Architecture Playground */
.playground-section {
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  border-y: 1px solid var(--border-color);
  position: relative;
}

.playground-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 2.5rem;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-md);
}

.playground-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.playground-tabs {
  display: flex;
  gap: 0.5rem;
  background: var(--bg-secondary);
  padding: 0.35rem;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-btn.active {
  background: var(--accent-blue);
  color: white;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.playground-display {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

.schema-viz-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.8rem;
  font-family: var(--font-mono);
}

.viz-header {
  font-size: 0.85rem;
  color: var(--accent-cyan);
  margin-bottom: 1rem;
  display: flex;
  justify-content: space-between;
}

.viz-metric-box {
  background: var(--bg-card-hover);
  border-radius: 10px;
  padding: 1.2rem;
  margin-bottom: 1rem;
  border: 1px dashed var(--border-highlight);
}

.viz-metric-title {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.viz-metric-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent-emerald);
  margin: 0.2rem 0;
}

.viz-code-block {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 1rem;
  border-radius: 8px;
  font-size: 0.82rem;
  color: var(--text-main);
  overflow-x: auto;
  line-height: 1.5;
}

/* Case Studies Section */
.case-studies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
  cursor: pointer;
}

.case-card:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.case-client {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.case-card h3 {
  font-size: 1.35rem;
  margin-bottom: 1rem;
}

.case-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.case-impact {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 10px;
  padding: 0.8rem 1rem;
  color: var(--accent-emerald);
  font-weight: 600;
  font-size: 0.88rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

/* Modal Styling */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(2, 6, 23, 0.85);
  backdrop-filter: blur(12px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  max-width: 750px;
  width: 100%;
  padding: 2.5rem;
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-md);
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal-content {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

/* Tech Stack Radar Grid */
.tech-filter-bar {
  display: flex;
  justify-content: center;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.filter-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.5rem 1.2rem;
  border-radius: 9999px;
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
  border-color: var(--accent-cyan);
  color: var(--text-main);
  background: rgba(56, 189, 248, 0.1);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 1.2rem;
}

.tech-item-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.2rem;
  text-align: center;
  transition: all var(--transition-fast);
}

.tech-item-card:hover {
  border-color: var(--border-highlight);
  transform: translateY(-3px);
  background: var(--bg-card-hover);
}

.tech-item-name {
  font-weight: 600;
  font-size: 0.95rem;
  margin-top: 0.5rem;
}

.tech-item-category {
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* Engagement Models & Pricing Scope Estimator */
.engagement-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
  backdrop-filter: blur(12px);
}

.pricing-card.featured {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow);
}

.pricing-card.featured::before {
  content: 'MOST POPULAR';
  position: absolute;
  top: -12px;
  right: 24px;
  background: var(--gradient-hero);
  color: white;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.25rem 0.85rem;
  border-radius: 9999px;
  letter-spacing: 0.05em;
}

.pricing-card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
}

.pricing-duration {
  color: var(--accent-cyan);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.pricing-features {
  list-style: none;
  margin: 1.5rem 0 2rem 0;
  flex-grow: 1;
}

.pricing-features li {
  padding: 0.5rem 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.pricing-features li::before {
  content: '✓';
  color: var(--accent-emerald);
  font-weight: 800;
}

/* Interactive Scope Estimator Widget */
.estimator-box {
  background: var(--bg-card);
  border: 1px solid var(--border-highlight);
  border-radius: 24px;
  padding: 2.5rem;
  backdrop-filter: blur(16px);
}

.estimator-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}

.estimator-results {
  background: var(--bg-secondary);
  padding: 1.8rem;
  border-radius: 16px;
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 0.8rem 1rem;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

/* Contact Section */
.contact-container {
  background: var(--gradient-contact);
  border: 1px solid var(--border-color);
  border-radius: 28px;
  padding: 4rem 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.contact-container h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.contact-container p {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 2.5rem auto;
}

.contact-methods {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.contact-chip {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 0.8rem 1.5rem;
  border-radius: 12px;
  color: var(--text-main);
  font-weight: 500;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.contact-chip:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
}

/* Footer */
footer {
  padding: 3rem 0;
  border-top: 1px solid var(--border-color);
  color: var(--text-dim);
  font-size: 0.9rem;
}

.footer-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

/* Inline Styles Replacements & Semantic Utility Classes */
.brand-accent-text {
  color: var(--accent-cyan);
}

.font-mono-tag {
  font-family: var(--font-mono);
}

.modal-title {
  margin-bottom: 1.5rem;
}

.modal-section {
  margin-bottom: 1.5rem;
}

.modal-section-title {
  color: var(--accent-cyan);
  margin-bottom: 0.5rem;
}

.modal-section-title-emerald {
  color: var(--accent-emerald);
  margin-bottom: 0.5rem;
}

.modal-section-desc {
  color: var(--text-muted);
}

.modal-section-impact {
  color: var(--text-main);
  font-weight: 600;
}

.modal-tech-title {
  color: var(--text-main);
  margin-bottom: 0.8rem;
}

.tech-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.8rem;
}

.tech-stack-icon-svg {
  width: 2.5rem;
  height: 2.5rem;
  transition: transform var(--transition-fast);
}

.tech-item-card:hover .tech-stack-icon-svg {
  transform: scale(1.15);
}

.pricing-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.estimator-title {
  font-size: 1.6rem;
  margin-bottom: 0.5rem;
  text-align: center;
}

.estimator-desc {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.estimator-result-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}

.estimator-result-val-time {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  margin-bottom: 1.2rem;
}

.estimator-result-val-roi {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent-emerald);
  margin-bottom: 1.2rem;
}

.estimator-result-val-model {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}

.about-heading {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.about-paragraph-large {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 1.2rem;
  line-height: 1.7;
}

.about-paragraph-last {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.about-meta-row {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.about-meta-label {
  font-size: 0.85rem;
  color: var(--text-dim);
  text-transform: uppercase;
  font-weight: 700;
}

.about-meta-value {
  font-weight: 600;
  color: var(--text-main);
}

.about-meta-sub {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.about-principles-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2rem;
  backdrop-filter: blur(12px);
}

.about-principles-title {
  color: var(--accent-cyan);
  margin-bottom: 1rem;
}

.about-principles-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.about-principles-item {
  display: flex;
  gap: 0.8rem;
}

.about-principles-num {
  color: var(--accent-cyan);
  font-weight: 800;
}

.contact-badge {
  margin-bottom: 1rem;
}

.contact-btn {
  font-size: 1.1rem;
  padding: 1rem 2.2rem;
}

.footer-link-linkedin {
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 600;
}

/* ROI Projections Chart */
.roi-chart-container {
  display: flex;
  margin-top: 2.2rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.8rem 1.2rem 1.2rem 1.2rem;
  height: 210px;
  gap: 1rem;
}

.roi-chart-axis {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  text-align: right;
  width: 45px;
  height: 140px;
  padding-bottom: 20px;
}

.roi-chart-bars {
  display: flex;
  flex: 1;
  justify-content: space-around;
  height: 140px;
  align-items: flex-end;
  border-left: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 0 1rem;
}

.roi-bar-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 45%;
  height: 100%;
  justify-content: flex-end;
  position: relative;
}

.roi-bar {
  width: 100%;
  border-radius: 6px 6px 0 0;
  position: relative;
  transition: height 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  justify-content: center;
  min-height: 10px;
}

.roi-bar.before {
  background: linear-gradient(180deg, rgba(239, 68, 68, 0.8) 0%, rgba(239, 68, 68, 0.3) 100%);
  border: 1px solid rgba(239, 68, 68, 0.5);
}

.roi-bar.after {
  background: linear-gradient(180deg, var(--accent-emerald) 0%, rgba(16, 185, 129, 0.3) 100%);
  border: 1px solid rgba(16, 185, 129, 0.5);
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.15);
}

.bar-value {
  position: absolute;
  top: -24px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-main);
  white-space: nowrap;
}

.bar-label {
  margin-top: 0.8rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  text-align: center;
  position: absolute;
  bottom: -22px;
}

.chart-section-title {
  margin-top: 2.8rem;
}

.footer-legal-links {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  font-size: 0.85rem;
}

.legal-link {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.legal-link:hover {
  color: var(--accent-cyan);
}

.separator {
  color: var(--text-dim);
}

.legal-modal-content {
  max-width: 700px;
  max-height: 80vh;
  overflow-y: auto;
  text-align: left;
}

.legal-modal-content h2 {
  font-size: 1.8rem;
  margin-bottom: 1.2rem;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.legal-modal-content h3 {
  font-size: 1.2rem;
  margin-top: 1.5rem;
  margin-bottom: 0.8rem;
  color: var(--text-main);
}

.legal-modal-content h4 {
  font-size: 1rem;
  margin-top: 1.2rem;
  margin-bottom: 0.6rem;
  color: var(--text-main);
}

.legal-modal-content p {
  margin-bottom: 1rem;
  line-height: 1.6;
}

.legal-modal-content ul {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.legal-modal-content li {
  margin-bottom: 0.5rem;
  line-height: 1.5;
}

/* Service & Tool Interactive Graph */
.graph-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 2rem;
  backdrop-filter: blur(16px);
  margin-top: 2rem;
}

.graph-layout {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.graph-canvas-container {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.graph-sidebar {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem;
  width: 100%;
  min-height: 240px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.graph-details-box h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: var(--text-main);
  transition: color 0.3s;
}

#relationship-graph {
  width: 100%;
  height: auto;
  max-height: 400px;
}

/* Node styles */
.graph-node {
  cursor: pointer;
}

.graph-node circle {
  fill: var(--bg-secondary);
  stroke: var(--text-dim);
  stroke-width: 2px;
  transition: fill 0.3s, stroke 0.3s, stroke-width 0.3s;
}

.graph-node text {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 600;
  fill: var(--text-muted);
  transition: fill 0.3s, font-weight 0.3s;
  pointer-events: none;
}

/* Pipeline Stage Colors */
.graph-node.ingest { color: var(--accent-cyan); }
.graph-node.ingest circle {
  stroke: var(--accent-cyan);
  fill: rgba(56, 189, 248, 0.15);
}
.graph-node.ingest:hover circle, .graph-node.ingest.active circle {
  fill: var(--accent-cyan);
  stroke-width: 3.5px;
}

.graph-node.storage { color: var(--accent-blue); }
.graph-node.storage circle {
  stroke: var(--accent-blue);
  fill: rgba(59, 130, 246, 0.15);
}
.graph-node.storage:hover circle, .graph-node.storage.active circle {
  fill: var(--accent-blue);
  stroke-width: 3.5px;
}

.graph-node.transform { color: var(--accent-purple); }
.graph-node.transform circle {
  stroke: var(--accent-purple);
  fill: rgba(139, 92, 246, 0.15);
}
.graph-node.transform:hover circle, .graph-node.transform.active circle {
  fill: var(--accent-purple);
  stroke-width: 3.5px;
}

.graph-node.compute { color: var(--accent-amber); }
.graph-node.compute circle {
  stroke: var(--accent-amber);
  fill: rgba(245, 158, 11, 0.15);
}
.graph-node.compute:hover circle, .graph-node.compute.active circle {
  fill: var(--accent-amber);
  stroke-width: 3.5px;
}

.graph-node.consume { color: var(--accent-emerald); }
.graph-node.consume circle {
  stroke: var(--accent-emerald);
  fill: rgba(16, 185, 129, 0.15);
}
.graph-node.consume:hover circle, .graph-node.consume.active circle {
  fill: var(--accent-emerald);
  stroke-width: 3.5px;
}

.graph-node:hover text,
.graph-node.active text {
  fill: var(--text-main);
  font-weight: 700;
}

.graph-node circle.pulse-ring {
  fill: none;
  stroke: currentColor;
  opacity: 0;
  pointer-events: none;
}

.graph-node.active circle.pulse-ring {
  animation: ping 1.5s cubic-bezier(0, 0, 0.2, 1) infinite;
}

@keyframes ping {
  0% {
    r: 12;
    opacity: 0.8;
    stroke-width: 1px;
  }
  100% {
    r: 32;
    opacity: 0;
    stroke-width: 3px;
  }
}

/* Graph Connection Links */
.graph-link {
  stroke: var(--border-color);
  stroke-width: 1.5px;
  stroke-dasharray: 4 4;
  transition: stroke 0.3s, stroke-width 0.3s, stroke-dasharray 0.3s, animation 0.3s;
  pointer-events: none;
}

@keyframes flow-forward {
  to {
    stroke-dashoffset: -20;
  }
}

.graph-link.active {
  stroke: var(--accent-cyan);
  stroke-width: 3px;
  stroke-dasharray: 10 5;
  animation: flow-forward 0.8s linear infinite;
}

.graph-link.transform-active {
  stroke: var(--accent-purple);
  stroke-width: 3px;
  stroke-dasharray: 10 5;
  animation: flow-forward 0.8s linear infinite;
}

.graph-link.compute-active {
  stroke: var(--accent-amber);
  stroke-width: 3px;
  stroke-dasharray: 10 5;
  animation: flow-forward 0.8s linear infinite;
}

.graph-link.consume-active {
  stroke: var(--accent-emerald);
  stroke-width: 3px;
  stroke-dasharray: 10 5;
  animation: flow-forward 0.8s linear infinite;
}

/* Explosion sidebar card styles */
.explosion-detail {
  margin-top: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  text-align: left;
}

.explosion-summary {
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--text-muted);
  margin-bottom: 0.2rem;
}

.explosion-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
  margin-top: 1rem;
}

.explosion-col {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem 1.2rem;
  transition: background 0.3s, border-color 0.3s, transform 0.3s;
  opacity: 0;
  animation: slide-up-fade 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Staggered delay for detailed columns */
.explosion-col:nth-child(1) { animation-delay: 0.04s; }
.explosion-col:nth-child(2) { animation-delay: 0.1s; }
.explosion-col:nth-child(3) { animation-delay: 0.16s; }

@keyframes slide-up-fade {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.explosion-col:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--accent-cyan);
  transform: translateY(-4px);
}

.explosion-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.explosion-col p {
  font-size: 0.8rem;
  line-height: 1.45;
  color: var(--text-dim);
  margin-bottom: 0;
}

@media (max-width: 992px) {
  .explosion-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .explosion-col:hover {
    transform: translateX(4px);
  }
  
  .graph-sidebar {
    min-height: auto;
    padding: 1.5rem;
  }
}

/* AI Speedup Callout Styles */
.explosion-ai-speedup {
  margin-top: 1.2rem;
  background: rgba(16, 185, 129, 0.03);
  border: 1px dashed rgba(16, 185, 129, 0.25);
  border-radius: 12px;
  padding: 1rem 1.2rem;
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  text-align: left;
  opacity: 0;
  animation: slide-up-fade 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: 0.22s;
}

.explosion-ai-speedup-icon {
  font-size: 1.2rem;
  line-height: 1;
  color: var(--accent-emerald);
  margin-top: 2px;
}

.explosion-ai-speedup-content h5 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-emerald);
  margin-bottom: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.explosion-ai-speedup-content p {
  font-size: 0.8rem;
  line-height: 1.45;
  color: var(--text-dim);
  margin-bottom: 0;
}

/* Responsive Styles */
@media (max-width: 992px) {
  .hero-grid { grid-template-columns: 1fr; }
  .playground-display { grid-template-columns: 1fr; }
  .estimator-grid { grid-template-columns: 1fr; }
  .hero-content h1 { font-size: 2.6rem; }
}

@media (max-width: 768px) {
  .nav-menu { display: none; }
  .mobile-toggle { display: block; }
  .hero-stats-row { grid-template-columns: 1fr; }
  .section-header h2 { font-size: 1.8rem; }
}