/* ==========================================================================
   ABMART — MẠNG CÔNG NGHỆ 3D & GIẢI PHÁP IT
   Design System, Branching Data Circuits, 3D Tilt & Responsive Layout
   ========================================================================== */

:root {
  /* Core Dark Obsidian Palette */
  --bg-deep: #060913;
  --bg-surface: #0a0f1e;
  --bg-card: rgba(14, 21, 38, 0.72);
  --bg-card-hover: rgba(18, 28, 52, 0.88);
  --bg-card-solid: #0d1424;
  
  /* Neon & Data Signal Accents */
  --cyan-primary: #00f0ff;
  --cyan-hover: #38f4ff;
  --cyan-subtle: rgba(0, 240, 255, 0.12);
  --cyan-glow: rgba(0, 240, 255, 0.28);
  --cyan-glow-intense: rgba(0, 240, 255, 0.6);

  --purple-primary: #a855f7;
  --purple-hover: #c084fc;
  --purple-subtle: rgba(168, 85, 247, 0.14);
  --purple-glow: rgba(168, 85, 247, 0.3);

  --emerald-success: #10b981;
  --amber-warning: #f59e0b;
  --rose-danger: #f43f5e;

  /* Typography Colors */
  --text-main: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #060913;

  /* Borders & Optical Depth */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.15);
  --border-active: rgba(0, 240, 255, 0.45);
  --border-focus: var(--cyan-primary);

  /* Fonts */
  --font-body: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-display: 'Space Grotesk', system-ui, -apple-system, sans-serif;

  /* Transitions */
  --transition-fast: 0.16s ease;
  --transition-base: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);

  /* Elevation */
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.55);
  --shadow-glow: 0 0 25px var(--cyan-glow);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-deep);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  background-color: var(--bg-deep);
  color: var(--text-main);
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Ambient Deep Lighting */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: 
    radial-gradient(circle at 18% 12%, rgba(0, 240, 255, 0.05) 0%, transparent 45%),
    radial-gradient(circle at 82% 28%, rgba(168, 85, 247, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 50% 88%, rgba(14, 21, 38, 0.8) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* --------------------------------------------------------------------------
   Canvas 2D Data Circuit Network Layer
   -------------------------------------------------------------------------- */
.circuit-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1; /* Layered between background and content */
  will-change: transform;
}

/* Skip link for keyboard accessibility */
.skip-to-content {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--cyan-primary);
  color: var(--text-inverse);
  padding: 10px 18px;
  font-weight: 700;
  border-radius: 8px;
  z-index: 99999;
  transition: top 0.2s ease;
  text-decoration: none;
}
.skip-to-content:focus {
  top: 20px;
}

:focus-visible {
  outline: 2px solid var(--cyan-primary);
  outline-offset: 3px;
}

/* Global Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
  position: relative;
  z-index: 2; /* Content stands in foreground */
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: #ffffff;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.015em;
}

p {
  color: var(--text-secondary);
}

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

.text-gradient {
  background: linear-gradient(135deg, #ffffff 15%, var(--cyan-primary) 85%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-purple {
  background: linear-gradient(135deg, var(--cyan-primary) 10%, var(--purple-primary) 90%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-cyan {
  color: var(--cyan-primary) !important;
}

.text-muted {
  color: var(--text-muted) !important;
}

/* --------------------------------------------------------------------------
   Buttons & Micro-interactions
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 24px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 10px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-base);
  text-decoration: none;
  line-height: 1.2;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.btn-primary {
  background-color: var(--cyan-primary);
  color: var(--text-inverse);
  box-shadow: 0 4px 18px rgba(0, 240, 255, 0.25);
}

.btn-primary:hover {
  background-color: var(--cyan-hover);
  box-shadow: 0 6px 24px rgba(0, 240, 255, 0.45);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid var(--border-medium);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: var(--cyan-primary);
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  color: var(--cyan-primary);
  border: 1px solid rgba(0, 240, 255, 0.4);
}

.btn-outline:hover {
  background-color: var(--cyan-subtle);
  border-color: var(--cyan-primary);
  color: #ffffff;
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   Site Header & Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 76px;
  background-color: rgba(6, 9, 19, 0.85);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1000;
  transition: all var(--transition-base);
}

.site-header.scrolled {
  background-color: rgba(5, 7, 16, 0.96);
  border-bottom-color: var(--border-medium);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Brand Logo */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-mark {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.15), rgba(168, 85, 247, 0.25));
  border: 1px solid rgba(0, 240, 255, 0.35);
  color: var(--cyan-primary);
  box-shadow: 0 0 12px var(--cyan-glow);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.brand-logo:hover .logo-mark {
  transform: scale(1.05);
  box-shadow: 0 0 18px var(--cyan-glow-intense);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #ffffff;
  line-height: 1.1;
}

.logo-sub {
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Desktop Navigation Menu */
.main-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 4px;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--cyan-primary);
  box-shadow: 0 0 8px var(--cyan-primary);
  transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
  color: #ffffff;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Mobile Toggle Hamburger */
.mobile-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  width: 40px;
  height: 40px;
  padding: 8px;
  cursor: pointer;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
}

.mobile-toggle .bar {
  width: 22px;
  height: 2px;
  background-color: var(--text-main);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.mobile-toggle[aria-expanded="true"] .bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.mobile-toggle[aria-expanded="true"] .bar:nth-child(2) {
  opacity: 0;
}
.mobile-toggle[aria-expanded="true"] .bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Drawer Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 76px;
  left: 0;
  width: 100%;
  background-color: rgba(6, 9, 19, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-medium);
  padding: 24px;
  flex-direction: column;
  gap: 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.7);
  transform: translateY(-10px);
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-base);
}

.mobile-menu.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.mobile-nav-link {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-main);
  padding: 10px 0;
  display: block;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mobile-nav-link:hover {
  color: var(--cyan-primary);
  padding-left: 6px;
}

/* --------------------------------------------------------------------------
   Hero Section & Central Tech Core
   -------------------------------------------------------------------------- */
.hero-section {
  padding-top: 150px;
  padding-bottom: 100px;
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 50px;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background-color: var(--cyan-subtle);
  border: 1px solid rgba(0, 240, 255, 0.3);
  border-radius: 30px;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--cyan-primary);
  letter-spacing: 0.06em;
  margin-bottom: 20px;
}

.badge-dot {
  width: 7px;
  height: 7px;
  background-color: var(--cyan-primary);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--cyan-primary);
  animation: pulseDot 2s infinite ease-in-out;
}

@keyframes pulseDot {
  0%, 100% { opacity: 0.6; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.3); }
}

.hero-heading {
  font-size: 3.25rem;
  line-height: 1.15;
  margin-bottom: 22px;
  font-weight: 700;
}

.hero-description {
  font-size: 1.12rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 34px;
  max-width: 600px;
}

.hero-buttons {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.hero-commitments {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.commitment-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.commitment-item svg {
  color: var(--cyan-primary);
  flex-shrink: 0;
}

/* Hero 3D Tech Core Card */
.hero-visual {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.canvas-card {
  width: 100%;
  max-width: 480px;
  height: 480px;
  background: radial-gradient(circle at center, rgba(14, 23, 44, 0.75) 0%, rgba(6, 9, 19, 0.95) 75%);
  border: 1px solid var(--border-medium);
  border-radius: 24px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card), inset 0 0 30px rgba(0, 240, 255, 0.05);
}

#hero-3d-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.canvas-meta {
  position: absolute;
  bottom: 16px;
  left: 20px;
  right: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: none;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-family: var(--font-display);
}

.status-dot {
  width: 6px;
  height: 6px;
  background-color: var(--emerald-success);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--emerald-success);
}

.canvas-hint {
  font-size: 0.72rem;
  font-style: italic;
  color: var(--text-muted);
}

/* Downward Conduit Emitter Anchor */
.hero-conduit-anchor {
  position: absolute;
  bottom: -40px;
  width: 3px;
  height: 40px;
  display: flex;
  justify-content: center;
}

.conduit-pulse-line {
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--cyan-primary), transparent);
  box-shadow: 0 0 10px var(--cyan-primary);
  animation: conduitFlow 1.8s infinite linear;
}

@keyframes conduitFlow {
  0% { transform: translateY(-100%); opacity: 0; }
  50% { opacity: 1; }
  100% { transform: translateY(100%); opacity: 0; }
}

/* --------------------------------------------------------------------------
   Common Section Styles
   -------------------------------------------------------------------------- */
.section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px auto;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--cyan-primary);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.4rem;
  margin-bottom: 16px;
  color: #ffffff;
}

.section-lead {
  font-size: 1.08rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   About Section
   -------------------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 36px 30px;
  transition: all var(--transition-base);
  backdrop-filter: blur(14px);
  position: relative;
  overflow: hidden;
}

.about-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-medium);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-card), 0 0 20px rgba(0, 240, 255, 0.08);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.about-card:hover .card-icon {
  transform: scale(1.08) rotate(3deg);
}

.card-icon.cyan {
  background-color: var(--cyan-subtle);
  color: var(--cyan-primary);
  border: 1px solid rgba(0, 240, 255, 0.3);
}

.card-icon.purple {
  background-color: var(--purple-subtle);
  color: var(--purple-primary);
  border: 1px solid rgba(168, 85, 247, 0.3);
}

.card-title {
  font-size: 1.35rem;
  margin-bottom: 12px;
  color: #ffffff;
}

.card-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   Services Section (3D Tilt Cards with Docking Ports & Specular Glare)
   -------------------------------------------------------------------------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.service-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 24px;
  padding: 38px 34px;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(14px);
  position: relative;
  overflow: hidden;
  transform-style: preserve-3d;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform 0.1s ease-out;
  cursor: default;
}

/* Dynamic Specular Reflection Glare following mouse */
.card-specular-glare {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle 280px at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255, 255, 255, 0.12), transparent 75%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s ease;
  z-index: 1;
}

.service-item:hover .card-specular-glare,
.service-item:focus-within .card-specular-glare {
  opacity: 1;
}

.service-item:hover,
.service-item:focus-visible {
  border-color: var(--border-active);
  box-shadow: var(--shadow-card), 0 0 30px var(--cyan-glow);
}

/* Docking Port Indicator on Service Card */
.card-port-indicator {
  position: absolute;
  top: 20px;
  right: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  background: rgba(6, 9, 19, 0.85);
  border: 1px solid var(--border-medium);
  border-radius: 20px;
  z-index: 2;
  transition: all var(--transition-base);
}

.port-pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--cyan-primary);
  box-shadow: 0 0 6px var(--cyan-primary);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.port-label {
  font-family: var(--font-display);
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.service-item:hover .card-port-indicator,
.service-item:focus-within .card-port-indicator {
  border-color: var(--cyan-primary);
  box-shadow: 0 0 12px var(--cyan-glow);
}

.service-item:hover .port-pulse,
.service-item:focus-within .port-pulse {
  transform: scale(1.3);
  box-shadow: 0 0 10px var(--cyan-primary);
}

.service-item:hover .port-label,
.service-item:focus-within .port-label {
  color: var(--cyan-primary);
}

.service-header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 16px;
  position: relative;
  z-index: 2;
}

.service-number {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--cyan-primary);
  opacity: 0.85;
}

.service-title {
  font-size: 1.45rem;
  color: #ffffff;
}

.service-intro {
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.65;
  margin-bottom: 22px;
  position: relative;
  z-index: 2;
}

.service-checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
  flex-grow: 1;
  position: relative;
  z-index: 2;
}

.service-checklist li {
  font-size: 0.92rem;
  color: #cbd5e1;
  position: relative;
  padding-left: 22px;
}

.service-checklist li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--cyan-primary);
  font-weight: 700;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
  position: relative;
  z-index: 2;
}

.service-tags span {
  font-size: 0.78rem;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

/* --------------------------------------------------------------------------
   Solutions Section & Disclaimer Banner
   -------------------------------------------------------------------------- */
.disclaimer-banner {
  background: rgba(14, 24, 48, 0.6);
  border: 1px solid rgba(0, 240, 255, 0.25);
  border-radius: 12px;
  padding: 14px 20px;
  margin-bottom: 36px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.9rem;
  color: #cbd5e1;
  line-height: 1.5;
}

.disclaimer-banner svg {
  color: var(--cyan-primary);
  flex-shrink: 0;
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.solution-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-base);
}

.solution-card:hover {
  border-color: var(--border-medium);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}

.solution-badge {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--purple-hover);
  background: var(--purple-subtle);
  display: inline-block;
  align-self: flex-start;
  padding: 4px 10px;
  border-radius: 6px;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

.solution-title {
  font-size: 1.28rem;
  margin-bottom: 12px;
  color: #ffffff;
}

.solution-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.solution-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.feature-chip {
  font-size: 0.8rem;
  color: var(--cyan-primary);
  background: var(--cyan-subtle);
  padding: 4px 10px;
  border-radius: 6px;
}

.solution-stack {
  font-size: 0.82rem;
  color: var(--text-muted);
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}

.solution-stack strong {
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   Process Section (Data Pipeline with Step Connector Nodes)
   -------------------------------------------------------------------------- */
.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  position: relative;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 18px;
  padding: 28px 22px;
  position: relative;
  transition: all var(--transition-base);
}

.step-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 240, 255, 0.4);
  background: var(--bg-card-hover);
}

.step-port-indicator {
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--bg-deep);
  border: 2px solid var(--cyan-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 8px var(--cyan-glow);
}

.port-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: var(--cyan-primary);
}

.step-number {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--cyan-primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.step-number::after {
  content: '';
  width: 32px;
  height: 2px;
  background-color: var(--border-medium);
}

.step-title {
  font-size: 1.15rem;
  margin-bottom: 10px;
  color: #ffffff;
}

.step-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Contact Section & Convergence Hub
   -------------------------------------------------------------------------- */
.contact-box {
  background: radial-gradient(circle at top right, rgba(168, 85, 247, 0.08) 0%, transparent 60%),
              radial-gradient(circle at bottom left, rgba(0, 240, 255, 0.08) 0%, transparent 60%),
              var(--bg-card-solid);
  border: 1px solid var(--border-medium);
  border-radius: 28px;
  padding: 56px 48px;
  box-shadow: var(--shadow-card);
  position: relative;
}

/* Convergence Hub Beacon at top of Contact Box */
.contact-hub-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding-bottom: 30px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.hub-beacon-ring {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1.5px solid var(--cyan-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.beacon-pulse-glow {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background-color: var(--cyan-glow);
  animation: beaconPulse 2s infinite ease-out;
}

.beacon-core-point {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--cyan-primary);
  box-shadow: 0 0 10px var(--cyan-primary);
}

@keyframes beaconPulse {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(2.2); opacity: 0; }
}

.hub-beacon-title {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--cyan-primary);
  text-transform: uppercase;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 56px;
}

.contact-heading {
  font-size: 2.3rem;
  margin-bottom: 18px;
  color: #ffffff;
}

.contact-sub {
  font-size: 1.02rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 34px;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 32px;
}

.contact-method-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.method-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background-color: var(--cyan-subtle);
  border: 1px solid rgba(0, 240, 255, 0.25);
  color: var(--cyan-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.contact-method-item:hover .method-icon {
  transform: scale(1.1) rotate(4deg);
}

.method-label {
  display: block;
  font-size: 0.72rem;
  font-family: var(--font-display);
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.method-value {
  font-size: 0.98rem;
  font-weight: 600;
  color: #ffffff;
}

.contact-note {
  padding: 16px;
  border-radius: 10px;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Contact Form */
.project-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: #e2e8f0;
}

.form-label .required {
  color: var(--rose-danger);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  background-color: rgba(6, 9, 19, 0.75);
  border: 1px solid var(--border-medium);
  border-radius: 10px;
  color: #ffffff;
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: all var(--transition-fast);
}

.form-control:focus {
  border-color: var(--cyan-primary);
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
  background-color: rgba(6, 9, 19, 0.95);
}

.form-control.is-invalid {
  border-color: var(--rose-danger);
}

.field-error {
  display: none;
  font-size: 0.78rem;
  color: var(--rose-danger);
}

.field-error.visible {
  display: block;
}

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

.form-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 8px;
}

/* Status Note Box */
.form-status-box {
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 14px;
  margin-top: 6px;
}

.status-note {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.status-note svg {
  color: var(--cyan-primary);
  margin-top: 2px;
  flex-shrink: 0;
}

/* Toast Notification */
.toast-notification {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background-color: #0b1528;
  border: 1px solid var(--cyan-primary);
  color: #ffffff;
  padding: 14px 20px;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 15px var(--cyan-glow);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.92rem;
  font-weight: 500;
  z-index: 10000;
  transform: translateY(100px);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.toast-icon {
  color: var(--cyan-primary);
  font-weight: 700;
  font-size: 1.1rem;
}

/* --------------------------------------------------------------------------
   Site Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: #04060c;
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 30px 0;
  position: relative;
  z-index: 10;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-tagline {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-top: 14px;
  max-width: 320px;
  line-height: 1.6;
}

.footer-heading {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 18px;
  display: block;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

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

.footer-info-text {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-bottom-links a {
  color: var(--text-secondary);
}
.footer-bottom-links a:hover {
  color: var(--cyan-primary);
}

/* --------------------------------------------------------------------------
   Scroll Animations & Visibility
   -------------------------------------------------------------------------- */
.fade-in-section {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.fade-in-section.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   Media Queries & Responsiveness
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-layout {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  .badge-tag {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-buttons {
    justify-content: center;
  }
  .hero-commitments {
    align-items: center;
  }
  .hero-visual {
    order: -1;
  }
  .canvas-card {
    max-width: 420px;
    height: 420px;
  }
  .process-steps {
    grid-template-columns: repeat(3, 1fr);
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .hero-heading {
    font-size: 2.4rem;
  }
  .section-title {
    font-size: 1.95rem;
  }
  .desktop-only {
    display: none !important;
  }
  .main-nav {
    display: none;
  }
  .mobile-toggle {
    display: flex;
  }
  .mobile-menu {
    display: flex;
  }
  .about-grid {
    grid-template-columns: 1fr;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
  .solutions-grid {
    grid-template-columns: 1fr;
  }
  .process-steps {
    grid-template-columns: 1fr;
  }
  .step-number::after {
    display: none;
  }
  .contact-box {
    padding: 36px 20px;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}

/* Reduced Motion for Accessibility */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .fade-in-section {
    opacity: 1 !important;
    transform: none !important;
  }
}