/* NeuraAtlas - Smart City IoT Data Platform
 * Retro Futurism theme with Chat-like Conversational layout
 * Version 1.0.0 - 2025
 */

/* ======================================
 * Table of Contents:
 * 1. CSS Reset & Base Styles
 * 2. Typography
 * 3. Variables
 * 4. Layout & Grid
 * 5. Header & Navigation
 * 6. Footer
 * 7. Hero Section
 * 8. Cards & Containers
 * 9. Forms & Inputs
 * 10. Buttons
 * 11. Chat-like Elements
 * 12. Animations & Effects
 * 13. Modal Windows
 * 14. Cookie Consent
 * 15. Utility Classes
 * 16. Media Queries
 * ====================================== */

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

html {
  font-size: 62.5%; /* 10px = 1rem */
  scroll-behavior: smooth;
  height: 100%;
}

body {
  font-family: 'Roboto', sans-serif;
  font-size: 1.6rem;
  line-height: 1.6;
  color: #e0e1dd;
  background-color: #0d1b2a;
  background-image: 
    linear-gradient(rgba(27, 38, 59, 0.9) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 38, 59, 0.9) 1px, transparent 1px);
  background-size: 20px 20px;
  min-height: 100%;
  overflow-x: hidden;
  position: relative;
}

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

a {
  color: #00f3ff;
  text-decoration: none;
  transition: color 0.3s, text-shadow 0.3s;
}

a:hover, a:focus {
  color: #ff00f7;
  text-shadow: 0 0 8px rgba(255, 0, 247, 0.6);
  outline: none;
}

ul, ol {
  list-style-position: inside;
}

/* ======================================
 * 2. Typography
 * ====================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Fira Code', monospace;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 2rem;
  color: #e0e1dd;
  position: relative;
}

h1 {
  font-size: 4.8rem;
  margin-bottom: 3rem;
  background: linear-gradient(90deg, #00f3ff, #ff00f7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 10px rgba(0, 243, 255, 0.4);
  letter-spacing: -0.05em;
}

h2 {
  font-size: 3.6rem;
  margin-top: 4rem;
  margin-bottom: 2.5rem;
  color: #00f3ff;
  text-shadow: 0 0 8px rgba(0, 243, 255, 0.4);
}

h3 {
  font-size: 2.4rem;
  margin-top: 3rem;
  color: #ff00f7;
  text-shadow: 0 0 6px rgba(255, 0, 247, 0.4);
}

h4 {
  font-size: 2rem;
  color: #39ff14;
  text-shadow: 0 0 5px rgba(57, 255, 20, 0.4);
}

h5 {
  font-size: 1.8rem;
  color: #ffdd00;
}

h6 {
  font-size: 1.6rem;
  color: #ff6b35;
}

p {
  margin-bottom: 2rem;
  font-weight: 300;
}

strong, b {
  font-weight: 500;
  color: #ffdd00;
}

code, pre {
  font-family: 'Fira Code', monospace;
  background-color: rgba(13, 27, 42, 0.7);
  border-radius: 4px;
  padding: 0.2rem 0.5rem;
  font-size: 0.9em;
  color: #39ff14;
  border-left: 3px solid #ff00f7;
}

pre {
  padding: 1.5rem;
  overflow-x: auto;
  margin: 2rem 0;
  line-height: 1.4;
}

pre code {
  background: none;
  border: none;
  padding: 0;
}

blockquote {
  border-left: 4px solid #00f3ff;
  padding-left: 2rem;
  margin: 2rem 0;
  font-style: italic;
  color: #778da9;
}

.subtitle {
  font-size: 2rem;
  font-weight: 300;
  color: #778da9;
  margin-bottom: 3rem;
  max-width: 80%;
  margin-left: auto;
  margin-right: auto;
}

.highlight {
  color: #ff00f7;
  font-weight: 500;
}

.mono {
  font-family: 'Fira Code', monospace;
}

/* ======================================
 * 3. Variables (CSS Custom Properties)
 * ====================================== */
:root {
  /* Primary Colors */
  --neon-blue: #00f3ff;
  --neon-pink: #ff00f7;
  --chrome-silver: #c0c0c0;
  --deep-purple: #3a0ca3;
  
  /* Secondary Colors */
  --neon-green: #39ff14;
  --sunset-orange: #ff6b35;
  --electric-violet: #9b5de5;
  
  /* Background Colors */
  --dark-space: #0d1b2a;
  --deep-night: #1b263b;
  --grid-blue: #415a77;
  --light-grid: #778da9;
  
  /* Text Colors */
  --bright-white: #e0e1dd;
  --terminal-green: #4cc9f0;
  --highlight-yellow: #ffdd00;
  --subdued-gray: #adb5bd;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.3);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-index layers */
  --z-below: -1;
  --z-normal: 1;
  --z-above: 10;
  --z-header: 100;
  --z-modal: 1000;
  --z-tooltip: 1500;
  --z-max: 9999;
  
  /* Container widths */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

/* ======================================
 * 4. Layout & Grid
 * ====================================== */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-sm {
  max-width: var(--container-sm);
}

.container-md {
  max-width: var(--container-md);
}

.container-lg {
  max-width: var(--container-lg);
}

.section {
  padding: var(--spacing-lg) 0;
  position: relative;
}

.section-lg {
  padding: var(--spacing-xl) 0;
}

.section-divider {
  height: 4px;
  background: linear-gradient(90deg, var(--neon-blue), var(--neon-pink));
  margin: var(--spacing-lg) 0;
  border-radius: var(--radius-sm);
  box-shadow: 0 0 10px rgba(0, 243, 255, 0.5);
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--spacing-md);
}

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

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.grid-auto {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.col-span-1 { grid-column: span 1; }
.col-span-2 { grid-column: span 2; }
.col-span-3 { grid-column: span 3; }
.col-span-4 { grid-column: span 4; }
.col-span-5 { grid-column: span 5; }
.col-span-6 { grid-column: span 6; }
.col-span-7 { grid-column: span 7; }
.col-span-8 { grid-column: span 8; }
.col-span-9 { grid-column: span 9; }
.col-span-10 { grid-column: span 10; }
.col-span-11 { grid-column: span 11; }
.col-span-12 { grid-column: span 12; }

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

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

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

.justify-between {
  justify-content: space-between;
}

.justify-end {
  justify-content: flex-end;
}

.gap-sm {
  gap: var(--spacing-sm);
}

.gap-md {
  gap: var(--spacing-md);
}

.gap-lg {
  gap: var(--spacing-lg);
}

.wrap {
  flex-wrap: wrap;
}

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

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

/* ======================================
 * 5. Header & Navigation
 * ====================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: var(--z-header);
  padding: 1.5rem 0;
  background-color: rgba(13, 27, 42, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 243, 255, 0.2);
  transition: background-color var(--transition-normal);
}

.header-scrolled {
  background-color: rgba(13, 27, 42, 0.95);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 1rem;
  z-index: var(--z-above);
}

.logo img {
  height: 4rem;
  width: auto;
  transition: transform var(--transition-normal);
}

.logo:hover img {
  transform: scale(1.05);
}

.nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
}

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 0.8rem 1.5rem;
  font-family: 'Fira Code', monospace;
  font-weight: 500;
  font-size: 1.6rem;
  color: var(--bright-white);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-blue), var(--neon-pink));
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-normal);
}

.nav-link:hover, .nav-link:focus, .nav-link.active {
  color: var(--neon-blue);
  text-shadow: 0 0 8px rgba(0, 243, 255, 0.6);
}

.nav-link:hover::before, .nav-link:focus::before, .nav-link.active::before {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-cta {
  margin-left: var(--spacing-md);
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 3rem;
  height: 2.4rem;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: var(--z-above);
}

.hamburger span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--neon-blue);
  border-radius: 3px;
  transition: all var(--transition-normal);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(10px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-10px) rotate(-45deg);
}

/* Mobile Navigation */
.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100vh;
  background: linear-gradient(135deg, rgba(13, 27, 42, 0.97), rgba(27, 38, 59, 0.97));
  backdrop-filter: blur(10px);
  z-index: var(--z-modal);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  transition: right var(--transition-slow);
  padding: var(--spacing-lg);
}

.mobile-nav.active {
  right: 0;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  width: 100%;
  max-width: 30rem;
}

.mobile-nav-item {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.mobile-nav.active .mobile-nav-item {
  opacity: 1;
  transform: translateY(0);
}

.mobile-nav.active .mobile-nav-item:nth-child(1) { transition-delay: 0.1s; }
.mobile-nav.active .mobile-nav-item:nth-child(2) { transition-delay: 0.2s; }
.mobile-nav.active .mobile-nav-item:nth-child(3) { transition-delay: 0.3s; }
.mobile-nav.active .mobile-nav-item:nth-child(4) { transition-delay: 0.4s; }
.mobile-nav.active .mobile-nav-item:nth-child(5) { transition-delay: 0.5s; }

.mobile-nav-link {
  display: block;
  padding: 1.5rem;
  font-family: 'Fira Code', monospace;
  font-size: 2.4rem;
  color: var(--bright-white);
  text-align: center;
  border-radius: var(--radius-md);
  background-color: rgba(65, 90, 119, 0.1);
  border: 1px solid rgba(0, 243, 255, 0.2);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.mobile-nav-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--neon-blue), var(--neon-pink));
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform var(--transition-normal);
}

.mobile-nav-link:hover, .mobile-nav-link:focus, .mobile-nav-link.active {
  background-color: rgba(65, 90, 119, 0.3);
  border-color: rgba(0, 243, 255, 0.5);
  text-shadow: 0 0 8px rgba(0, 243, 255, 0.6);
}

.mobile-nav-link:hover::before, .mobile-nav-link:focus::before, .mobile-nav-link.active::before {
  transform: scaleY(1);
}

.mobile-nav-cta {
  margin-top: var(--spacing-lg);
  width: 100%;
  max-width: 30rem;
}

.mobile-nav-close {
  position: absolute;
  top: 2rem;
  right: 2rem;
  background: none;
  border: none;
  color: var(--bright-white);
  font-size: 3rem;
  cursor: pointer;
  transition: color var(--transition-normal);
}

.mobile-nav-close:hover, .mobile-nav-close:focus {
  color: var(--neon-pink);
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin: 2rem 0;
  font-family: 'Fira Code', monospace;
  font-size: 1.4rem;
  color: var(--light-grid);
}

.breadcrumb-item {
  display: flex;
  align-items: center;
}

.breadcrumb-item::after {
  content: '/';
  margin-left: 0.8rem;
  color: var(--grid-blue);
}

.breadcrumb-item:last-child::after {
  display: none;
}

.breadcrumb-link {
  color: var(--light-grid);
  transition: color var(--transition-fast);
}

.breadcrumb-link:hover {
  color: var(--neon-blue);
}

.breadcrumb-current {
  color: var(--neon-blue);
}

/* ======================================
 * 6. Footer
 * ====================================== */
.footer {
  background-color: rgba(13, 27, 42, 0.95);
  border-top: 1px solid rgba(0, 243, 255, 0.2);
  padding: var(--spacing-lg) 0;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(27, 38, 59, 0.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 38, 59, 0.3) 1px, transparent 1px);
  background-size: 20px 20px;
  z-index: var(--z-below);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.footer-col {
  display: flex;
  flex-direction: column;
}

.footer-heading {
  font-family: 'Fira Code', monospace;
  font-size: 1.8rem;
  font-weight: 500;
  color: var(--neon-blue);
  margin-bottom: var(--spacing-md);
  position: relative;
  padding-bottom: 1rem;
}

.footer-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-blue), var(--neon-pink));
}

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

.footer-link {
  color: var(--bright-white);
  font-size: 1.5rem;
  transition: all var(--transition-normal);
  display: inline-block;
  position: relative;
}

.footer-link::before {
  content: '>';
  color: var(--neon-pink);
  margin-right: 0.8rem;
  opacity: 0;
  transform: translateX(-10px);
  transition: all var(--transition-normal);
}

.footer-link:hover, .footer-link:focus {
  color: var(--neon-blue);
  transform: translateX(5px);
}

.footer-link:hover::before, .footer-link:focus::before {
  opacity: 1;
  transform: translateX(0);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.footer-contact-icon {
  color: var(--neon-pink);
  font-size: 1.8rem;
  margin-top: 0.3rem;
}

.footer-contact-text {
  color: var(--bright-white);
  font-size: 1.5rem;
  line-height: 1.5;
}

.footer-bottom {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(0, 243, 255, 0.2);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer-copyright {
  color: var(--light-grid);
  font-size: 1.4rem;
}

.footer-legal {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.footer-legal-link {
  color: var(--light-grid);
  font-size: 1.4rem;
  transition: color var(--transition-fast);
}

.footer-legal-link:hover, .footer-legal-link:focus {
  color: var(--neon-blue);
}

.footer-cookie-settings {
  background: none;
  border: 1px solid var(--neon-blue);
  color: var(--neon-blue);
  padding: 0.6rem 1.2rem;
  font-family: 'Fira Code', monospace;
  font-size: 1.4rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.footer-cookie-settings:hover, .footer-cookie-settings:focus {
  background-color: rgba(0, 243, 255, 0.1);
  box-shadow: 0 0 10px rgba(0, 243, 255, 0.3);
}

/* ======================================
 * 7. Hero Section
 * ====================================== */
.hero {
  padding: 16rem 0 8rem;
  position: relative;
  overflow: hidden;
  background-color: var(--dark-space);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 30%, rgba(0, 243, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(255, 0, 247, 0.1) 0%, transparent 50%);
  z-index: var(--z-below);
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: var(--z-normal);
}

.hero-title {
  font-size: 5.6rem;
  margin-bottom: 2rem;
  line-height: 1.1;
  max-width: 80%;
}

.hero-subtitle {
  font-size: 2.2rem;
  color: var(--light-grid);
  margin-bottom: 4rem;
  max-width: 70%;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: 6rem;
}

.hero-image {
  max-width: 90%;
  margin: 0 auto;
  position: relative;
}

.hero-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(0, 243, 255, 0.3);
}

.hero-image::before {
  content: '';
  position: absolute;
  top: -10px;
  left: -10px;
  right: -10px;
  bottom: -10px;
  background: linear-gradient(45deg, var(--neon-blue), var(--neon-pink));
  border-radius: calc(var(--radius-lg) + 10px);
  z-index: var(--z-below);
  opacity: 0.5;
  filter: blur(20px);
}

.hero-scroll {
  position: absolute;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  color: var(--bright-white);
  text-decoration: none;
  animation: bounce 2s infinite;
}

.hero-scroll-text {
  font-family: 'Fira Code', monospace;
  font-size: 1.4rem;
}

.hero-scroll-icon {
  font-size: 2rem;
  color: var(--neon-blue);
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

/* ======================================
 * 8. Cards & Containers
 * ====================================== */
.card {
  background-color: rgba(27, 38, 59, 0.7);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  border: 1px solid rgba(0, 243, 255, 0.2);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card:hover, .card:focus-within {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
  border-color: rgba(0, 243, 255, 0.5);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--neon-blue), var(--neon-pink));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

.card:hover::before, .card:focus-within::before {
  transform: scaleX(1);
}

.card-icon {
  font-size: 3rem;
  color: var(--neon-blue);
  margin-bottom: var(--spacing-sm);
}

.card-title {
  font-size: 2.2rem;
  margin-bottom: var(--spacing-sm);
  color: var(--bright-white);
}

.card-text {
  color: var(--light-grid);
  margin-bottom: var(--spacing-md);
}

.card-list {
  list-style: none;
  margin-bottom: var(--spacing-md);
}

.card-list-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.8rem;
  font-size: 1.5rem;
}

.card-list-icon {
  color: var(--neon-pink);
  font-size: 1.6rem;
  margin-top: 0.2rem;
}

.card-footer {
  display: flex;
  justify-content: flex-end;
}

/* Feature Card */
.feature-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: linear-gradient(135deg, rgba(27, 38, 59, 0.8), rgba(65, 90, 119, 0.4));
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(0, 243, 255, 0.2);
  transition: all var(--transition-normal);
}

.feature-card:hover, .feature-card:focus-within {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
  border-color: rgba(0, 243, 255, 0.5);
}

.feature-card-header {
  padding: var(--spacing-md);
  border-bottom: 1px solid rgba(0, 243, 255, 0.2);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.feature-card-icon {
  font-size: 2.4rem;
  color: var(--neon-pink);
}

.feature-card-title {
  font-size: 2rem;
  margin-bottom: 0;
  color: var(--bright-white);
}

.feature-card-body {
  padding: var(--spacing-md);
  flex-grow: 1;
}

.feature-card-text {
  color: var(--light-grid);
  margin-bottom: var(--spacing-md);
}

.feature-card-list {
  list-style: none;
}

.feature-card-list-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.8rem;
  font-family: 'Fira Code', monospace;
  font-size: 1.4rem;
  color: var(--terminal-green);
}

.feature-card-list-icon {
  color: var(--neon-green);
  font-size: 1.4rem;
  margin-top: 0.2rem;
}

.feature-card-footer {
  padding: var(--spacing-md);
  border-top: 1px solid rgba(0, 243, 255, 0.2);
  display: flex;
  justify-content: flex-end;
}

/* Chat Card */
.chat-card {
  max-width: 80%;
  margin-bottom: var(--spacing-md);
  position: relative;
}

.chat-card-left {
  align-self: flex-start;
  margin-right: auto;
}

.chat-card-right {
  align-self: flex-end;
  margin-left: auto;
}

.chat-bubble {
  background-color: rgba(65, 90, 119, 0.7);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  border: 1px solid rgba(0, 243, 255, 0.2);
  position: relative;
}

.chat-card-left .chat-bubble {
  border-top-left-radius: 0;
}

.chat-card-right .chat-bubble {
  background-color: rgba(58, 12, 163, 0.7);
  border-color: rgba(255, 0, 247, 0.2);
  border-top-right-radius: 0;
}

.chat-bubble::before {
  content: '';
  position: absolute;
  width: 0;
  height: 0;
  border-style: solid;
}

.chat-card-left .chat-bubble::before {
  top: 0;
  left: -10px;
  border-width: 0 10px 10px 0;
  border-color: transparent rgba(0, 243, 255, 0.2) transparent transparent;
}

.chat-card-right .chat-bubble::before {
  top: 0;
  right: -10px;
  border-width: 0 0 10px 10px;
  border-color: transparent transparent transparent rgba(255, 0, 247, 0.2);
}

.chat-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: var(--spacing-sm);
}

.chat-avatar {
  width: 3.6rem;
  height: 3.6rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--neon-blue), var(--neon-pink));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--bright-white);
}

.chat-name {
  font-family: 'Fira Code', monospace;
  font-weight: 500;
  font-size: 1.6rem;
  color: var(--bright-white);
}

.chat-time {
  font-size: 1.2rem;
  color: var(--light-grid);
  margin-left: auto;
}

.chat-content {
  color: var(--bright-white);
}

.chat-content p:last-child {
  margin-bottom: 0;
}

.chat-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--spacing-sm);
  font-size: 1.2rem;
  color: var(--light-grid);
}

/* Box */
.box {
  background-color: rgba(27, 38, 59, 0.7);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  border: 1px solid rgba(0, 243, 255, 0.2);
  margin-bottom: var(--spacing-lg);
}

.box-highlight {
  border: 1px solid var(--neon-pink);
  background: linear-gradient(135deg, rgba(58, 12, 163, 0.3), rgba(27, 38, 59, 0.7));
}

.box-title {
  font-size: 2.4rem;
  margin-bottom: var(--spacing-md);
  color: var(--neon-blue);
}

/* Image container */
.image-container {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

.image-container img {
  width: 100%;
  transition: transform var(--transition-slow);
}

.image-container:hover img {
  transform: scale(1.05);
}

.image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(13, 27, 42, 0.8), transparent);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--spacing-md);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.image-container:hover .image-overlay {
  opacity: 1;
}

.image-title {
  color: var(--bright-white);
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

.image-description {
  color: var(--light-grid);
  font-size: 1.4rem;
}

/* ======================================
 * 9. Forms & Inputs
 * ====================================== */
.form {
  width: 100%;
  max-width: 60rem;
  margin: 0 auto;
}

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

.form-label {
  display: block;
  font-family: 'Fira Code', monospace;
  font-size: 1.6rem;
  color: var(--bright-white);
  margin-bottom: 0.8rem;
}

.form-control {
  display: block;
  width: 100%;
  padding: 1.2rem 1.5rem;
  font-family: 'Roboto', sans-serif;
  font-size: 1.6rem;
  color: var(--bright-white);
  background-color: rgba(13, 27, 42, 0.7);
  border: 1px solid rgba(0, 243, 255, 0.3);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.form-control:focus {
  outline: none;
  border-color: var(--neon-blue);
  box-shadow: 0 0 0 3px rgba(0, 243, 255, 0.2);
  background-color: rgba(13, 27, 42, 0.9);
}

.form-control::placeholder {
  color: var(--grid-blue);
}

textarea.form-control {
  min-height: 12rem;
  resize: vertical;
}

.form-check {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: var(--spacing-md);
}

.form-check-input {
  width: 2rem;
  height: 2rem;
  margin-top: 0.2rem;
  appearance: none;
  background-color: rgba(13, 27, 42, 0.7);
  border: 1px solid rgba(0, 243, 255, 0.3);
  border-radius: var(--radius-sm);
  transition: all var(--transition-normal);
  position: relative;
}

.form-check-input:checked {
  background-color: var(--neon-blue);
  border-color: var(--neon-blue);
}

.form-check-input:checked::before {
  content: '\f00c';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--dark-space);
  font-size: 1.2rem;
}

.form-check-input:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 243, 255, 0.2);
}

.form-check-label {
  font-size: 1.4rem;
  color: var(--light-grid);
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-md);
}

/* International Telephone Input */
.iti {
  width: 100%;
}

.iti__flag-container {
  display: flex;
}

.iti__selected-flag {
  background-color: rgba(13, 27, 42, 0.7) !important;
}

.iti__country-list {
  background-color: rgba(13, 27, 42, 0.95) !important;
  border-color: rgba(0, 243, 255, 0.3) !important;
}

.iti__country {
  color: var(--bright-white) !important;
}

.iti__country.iti__highlight {
  background-color: rgba(0, 243, 255, 0.2) !important;
}

/* ======================================
 * 10. Buttons
 * ====================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1.2rem 2.4rem;
  font-family: 'Fira Code', monospace;
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--bright-white);
  background-color: transparent;
  border: 1px solid var(--neon-blue);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  z-index: var(--z-normal);
  gap: 1rem;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, var(--neon-blue), var(--neon-pink));
  z-index: var(--z-below);
  transition: opacity var(--transition-normal);
  opacity: 0;
}

.btn:hover::before, .btn:focus::before {
  opacity: 1;
}

.btn:hover, .btn:focus {
  color: var(--bright-white);
  border-color: var(--neon-pink);
  box-shadow: 0 0 15px rgba(0, 243, 255, 0.5);
  outline: none;
}

.btn-icon {
  font-size: 1.8rem;
}

.btn-primary {
  background-color: var(--neon-blue);
  border-color: var(--neon-blue);
  color: var(--dark-space);
}

.btn-primary:hover, .btn-primary:focus {
  background-color: transparent;
  color: var(--bright-white);
}

.btn-secondary {
  background-color: var(--neon-pink);
  border-color: var(--neon-pink);
  color: var(--dark-space);
}

.btn-secondary:hover, .btn-secondary:focus {
  background-color: transparent;
  color: var(--bright-white);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--neon-blue);
  color: var(--neon-blue);
}

.btn-outline:hover, .btn-outline:focus {
  color: var(--bright-white);
}

.btn-sm {
  padding: 0.8rem 1.6rem;
  font-size: 1.4rem;
}

.btn-lg {
  padding: 1.6rem 3.2rem;
  font-size: 1.8rem;
}

.btn-block {
  display: flex;
  width: 100%;
}

.btn-group {
  display: flex;
  gap: var(--spacing-sm);
}

.btn-group-vertical {
  flex-direction: column;
}

/* ======================================
 * 11. Chat-like Elements
 * ====================================== */
.chat-container {
  display: flex;
  flex-direction: column;
  max-width: 80rem;
  margin: 0 auto;
  padding: var(--spacing-md);
}

.chat-conversation {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.chat-date {
  text-align: center;
  font-size: 1.4rem;
  color: var(--light-grid);
  margin: var(--spacing-md) 0;
  position: relative;
}

.chat-date::before, .chat-date::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 30%;
  height: 1px;
  background-color: rgba(0, 243, 255, 0.2);
}

.chat-date::before {
  left: 0;
}

.chat-date::after {
  right: 0;
}

.chat-typing {
  align-self: flex-start;
  display: flex;
  gap: 0.5rem;
  padding: 1rem;
  background-color: rgba(65, 90, 119, 0.3);
  border-radius: var(--radius-md);
}

.chat-typing-dot {
  width: 0.8rem;
  height: 0.8rem;
  background-color: var(--neon-blue);
  border-radius: 50%;
  animation: typing-animation 1.5s infinite;
}

.chat-typing-dot:nth-child(2) {
  animation-delay: 0.2s;
}

.chat-typing-dot:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes typing-animation {
  0%, 60%, 100% {
    transform: translateY(0);
  }
  30% {
    transform: translateY(-5px);
  }
}

.chat-input-container {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
  position: relative;
}

.chat-input {
  flex-grow: 1;
  padding: 1.2rem 1.5rem;
  font-family: 'Roboto', sans-serif;
  font-size: 1.6rem;
  color: var(--bright-white);
  background-color: rgba(13, 27, 42, 0.7);
  border: 1px solid rgba(0, 243, 255, 0.3);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.chat-input:focus {
  outline: none;
  border-color: var(--neon-blue);
  box-shadow: 0 0 0 3px rgba(0, 243, 255, 0.2);
}

.chat-send-btn {
  background-color: var(--neon-blue);
  border: none;
  border-radius: var(--radius-md);
  width: 4.8rem;
  height: 4.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dark-space);
  font-size: 1.8rem;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.chat-send-btn:hover, .chat-send-btn:focus {
  background-color: var(--neon-pink);
  box-shadow: 0 0 15px rgba(255, 0, 247, 0.5);
  outline: none;
}

/* ======================================
 * 12. Animations & Effects
 * ====================================== */
.fade-in {
  animation: fadeIn 0.5s ease forwards;
}

.fade-in-up {
  animation: fadeInUp 0.5s ease forwards;
}

.fade-in-down {
  animation: fadeInDown 0.5s ease forwards;
}

.fade-in-left {
  animation: fadeInLeft 0.5s ease forwards;
}

.fade-in-right {
  animation: fadeInRight 0.5s ease forwards;
}

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(0, 243, 255, 0.7);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(0, 243, 255, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(0, 243, 255, 0);
  }
}

.glow {
  animation: glow 2s infinite alternate;
}

@keyframes glow {
  from {
    text-shadow: 0 0 5px rgba(0, 243, 255, 0.5), 0 0 10px rgba(0, 243, 255, 0.3);
  }
  to {
    text-shadow: 0 0 10px rgba(0, 243, 255, 0.7), 0 0 20px rgba(0, 243, 255, 0.5), 0 0 30px rgba(0, 243, 255, 0.3);
  }
}

.float {
  animation: float 3s infinite ease-in-out;
}

@keyframes float {
  0% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
  100% {
    transform: translateY(0);
  }
}

/* ======================================
 * 13. Modal Windows
 * ====================================== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(13, 27, 42, 0.9);
  backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

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

.modal-dialog {
  width: 100%;
  max-width: 50rem;
  background: linear-gradient(135deg, rgba(27, 38, 59, 0.9), rgba(13, 27, 42, 0.95));
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0, 243, 255, 0.3);
  overflow: hidden;
  transform: scale(0.9);
  transition: transform var(--transition-normal);
  position: relative;
}

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

.modal-header {
  padding: var(--spacing-md);
  border-bottom: 1px solid rgba(0, 243, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 2.4rem;
  color: var(--neon-blue);
  margin-bottom: 0;
}

.modal-close {
  background: none;
  border: none;
  color: var(--bright-white);
  font-size: 2.4rem;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.modal-close:hover, .modal-close:focus {
  color: var(--neon-pink);
  outline: none;
}

.modal-body {
  padding: var(--spacing-lg);
}

.modal-footer {
  padding: var(--spacing-md);
  border-top: 1px solid rgba(0, 243, 255, 0.2);
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-md);
}

/* Success Modal */
.success-modal .modal-dialog {
  border-color: var(--neon-green);
}

.success-modal .modal-header {
  border-bottom-color: var(--neon-green);
}

.success-modal .modal-title {
  color: var(--neon-green);
}

.success-icon {
  font-size: 6rem;
  color: var(--neon-green);
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.success-message {
  text-align: center;
  font-size: 1.8rem;
  margin-bottom: var(--spacing-md);
}

/* ======================================
 * 14. Cookie Consent
 * ====================================== */
.cookie-consent {
  position: fixed;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 6rem);
  max-width: 50rem;
  background: linear-gradient(135deg, rgba(27, 38, 59, 0.95), rgba(13, 27, 42, 0.95));
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0, 243, 255, 0.3);
  padding: var(--spacing-md);
  z-index: var(--z-max);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  display: none;
}

.cookie-consent.active {
  display: block;
  animation: slideUp 0.5s forwards;
}

@keyframes slideUp {
  from {
    transform: translate(-50%, 100%);
    opacity: 0;
  }
  to {
    transform: translate(-50%, 0);
    opacity: 1;
  }
}

.cookie-title {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
  color: var(--neon-blue);
}

.cookie-text {
  font-size: 1.4rem;
  color: var(--light-grid);
  margin-bottom: var(--spacing-md);
}

.cookie-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.cookie-settings-btn {
  background: none;
  border: 1px solid var(--neon-blue);
  color: var(--neon-blue);
  padding: 0.8rem 1.6rem;
  font-family: 'Fira Code', monospace;
  font-size: 1.4rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
  flex-grow: 1;
}

.cookie-settings-btn:hover, .cookie-settings-btn:focus {
  background-color: rgba(0, 243, 255, 0.1);
  box-shadow: 0 0 10px rgba(0, 243, 255, 0.3);
}

.cookie-accept-btn {
  background-color: var(--neon-blue);
  border: 1px solid var(--neon-blue);
  color: var(--dark-space);
  padding: 0.8rem 1.6rem;
  font-family: 'Fira Code', monospace;
  font-size: 1.4rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
  flex-grow: 1;
}

.cookie-accept-btn:hover, .cookie-accept-btn:focus {
  background-color: var(--neon-pink);
  border-color: var(--neon-pink);
  box-shadow: 0 0 10px rgba(255, 0, 247, 0.3);
}

.cookie-reject-btn {
  background: none;
  border: 1px solid var(--light-grid);
  color: var(--light-grid);
  padding: 0.8rem 1.6rem;
  font-family: 'Fira Code', monospace;
  font-size: 1.4rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
  flex-grow: 1;
}

.cookie-reject-btn:hover, .cookie-reject-btn:focus {
  background-color: rgba(119, 141, 169, 0.1);
  color: var(--bright-white);
}

/* Cookie Settings Modal */
.cookie-settings-modal .modal-dialog {
  max-width: 60rem;
}

.cookie-category {
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid rgba(0, 243, 255, 0.2);
}

.cookie-category:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.cookie-category-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.cookie-category-title {
  font-size: 1.8rem;
  color: var(--bright-white);
  margin-bottom: 0;
}

.cookie-category-toggle {
  position: relative;
  display: inline-block;
  width: 5rem;
  height: 2.6rem;
}

.cookie-category-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.cookie-category-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(13, 27, 42, 0.7);
  border: 1px solid rgba(0, 243, 255, 0.3);
  transition: all var(--transition-normal);
  border-radius: 3.4rem;
}

.cookie-category-slider:before {
  position: absolute;
  content: "";
  height: 1.8rem;
  width: 1.8rem;
  left: 0.4rem;
  bottom: 0.3rem;
  background-color: var(--bright-white);
  transition: all var(--transition-normal);
  border-radius: 50%;
}

input:checked + .cookie-category-slider {
  background-color: var(--neon-blue);
}

input:focus + .cookie-category-slider {
  box-shadow: 0 0 1px var(--neon-blue);
}

input:checked + .cookie-category-slider:before {
  transform: translateX(2.4rem);
}

.cookie-category-description {
  font-size: 1.4rem;
  color: var(--light-grid);
}

.cookie-necessary-label {
  font-size: 1.2rem;
  color: var(--neon-green);
  font-family: 'Fira Code', monospace;
  margin-left: var(--spacing-sm);
}

/* ======================================
 * 15. Utility Classes
 * ====================================== */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.ml-0 { margin-left: 0; }
.ml-1 { margin-left: var(--spacing-xs); }
.ml-2 { margin-left: var(--spacing-sm); }
.ml-3 { margin-left: var(--spacing-md); }
.ml-4 { margin-left: var(--spacing-lg); }
.ml-5 { margin-left: var(--spacing-xl); }

.mr-0 { margin-right: 0; }
.mr-1 { margin-right: var(--spacing-xs); }
.mr-2 { margin-right: var(--spacing-sm); }
.mr-3 { margin-right: var(--spacing-md); }
.mr-4 { margin-right: var(--spacing-lg); }
.mr-5 { margin-right: var(--spacing-xl); }

.pt-0 { padding-top: 0; }
.pt-1 { padding-top: var(--spacing-xs); }
.pt-2 { padding-top: var(--spacing-sm); }
.pt-3 { padding-top: var(--spacing-md); }
.pt-4 { padding-top: var(--spacing-lg); }
.pt-5 { padding-top: var(--spacing-xl); }

.pb-0 { padding-bottom: 0; }
.pb-1 { padding-bottom: var(--spacing-xs); }
.pb-2 { padding-bottom: var(--spacing-sm); }
.pb-3 { padding-bottom: var(--spacing-md); }
.pb-4 { padding-bottom: var(--spacing-lg); }
.pb-5 { padding-bottom: var(--spacing-xl); }

.pl-0 { padding-left: 0; }
.pl-1 { padding-left: var(--spacing-xs); }
.pl-2 { padding-left: var(--spacing-sm); }
.pl-3 { padding-left: var(--spacing-md); }
.pl-4 { padding-left: var(--spacing-lg); }
.pl-5 { padding-left: var(--spacing-xl); }

.pr-0 { padding-right: 0; }
.pr-1 { padding-right: var(--spacing-xs); }
.pr-2 { padding-right: var(--spacing-sm); }
.pr-3 { padding-right: var(--spacing-md); }
.pr-4 { padding-right: var(--spacing-lg); }
.pr-5 { padding-right: var(--spacing-xl); }

.w-25 { width: 25%; }
.w-50 { width: 50%; }
.w-75 { width: 75%; }
.w-100 { width: 100%; }

.h-25 { height: 25%; }
.h-50 { height: 50%; }
.h-75 { height: 75%; }
.h-100 { height: 100%; }

.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.position-relative { position: relative; }
.position-absolute { position: absolute; }
.position-fixed { position: fixed; }
.position-sticky { position: sticky; }

.top-0 { top: 0; }
.right-0 { right: 0; }
.bottom-0 { bottom: 0; }
.left-0 { left: 0; }

.text-primary { color: var(--neon-blue); }
.text-secondary { color: var(--neon-pink); }
.text-success { color: var(--neon-green); }
.text-warning { color: var(--highlight-yellow); }
.text-danger { color: var(--sunset-orange); }
.text-light { color: var(--bright-white); }
.text-dark { color: var(--dark-space); }
.text-muted { color: var(--light-grid); }

.bg-primary { background-color: var(--neon-blue); }
.bg-secondary { background-color: var(--neon-pink); }
.bg-success { background-color: var(--neon-green); }
.bg-warning { background-color: var(--highlight-yellow); }
.bg-danger { background-color: var(--sunset-orange); }
.bg-light { background-color: var(--bright-white); }
.bg-dark { background-color: var(--dark-space); }

.rounded { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-circle { border-radius: 50%; }
.rounded-pill { border-radius: 9999px; }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.border { border: 1px solid rgba(0, 243, 255, 0.2); }
.border-top { border-top: 1px solid rgba(0, 243, 255, 0.2); }
.border-right { border-right: 1px solid rgba(0, 243, 255, 0.2); }
.border-bottom { border-bottom: 1px solid rgba(0, 243, 255, 0.2); }
.border-left { border-left: 1px solid rgba(0, 243, 255, 0.2); }

.border-primary { border-color: var(--neon-blue); }
.border-secondary { border-color: var(--neon-pink); }
.border-success { border-color: var(--neon-green); }
.border-warning { border-color: var(--highlight-yellow); }
.border-danger { border-color: var(--sunset-orange); }

.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-scroll { overflow: scroll; }

.font-weight-light { font-weight: 300; }
.font-weight-normal { font-weight: 400; }
.font-weight-bold { font-weight: 500; }
.font-weight-bolder { font-weight: 700; }

.font-mono { font-family: 'Fira Code', monospace; }
.font-sans { font-family: 'Roboto', sans-serif; }

.text-uppercase { text-transform: uppercase; }
.text-lowercase { text-transform: lowercase; }
.text-capitalize { text-transform: capitalize; }

.lh-1 { line-height: 1; }
.lh-sm { line-height: 1.25; }
.lh-base { line-height: 1.5; }
.lh-lg { line-height: 2; }

.visible { visibility: visible; }
.invisible { visibility: hidden; }

.opacity-0 { opacity: 0; }
.opacity-25 { opacity: 0.25; }
.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }
.opacity-100 { opacity: 1; }

/* ======================================
 * 16. Media Queries
 * ====================================== */
@media (max-width: 1200px) {
  html {
    font-size: 60%;
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .hero-title {
    font-size: 5rem;
    max-width: 90%;
  }
  
  .hero-subtitle {
    max-width: 80%;
  }
  
  .grid-4 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 992px) {
  html {
    font-size: 58%;
  }
  
  .hero-title {
    font-size: 4.4rem;
  }
  
  .grid-4, .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .col-span-3, .col-span-4, .col-span-5, .col-span-6 {
    grid-column: span 6;
  }
  
  .col-span-7, .col-span-8, .col-span-9 {
    grid-column: span 12;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 56%;
  }
  
  .nav-list {
    display: none;
  }
  
  .hamburger {
    display: flex;
  }
  
  .hero {
    padding: 12rem 0 6rem;
  }
  
  .hero-title {
    font-size: 3.8rem;
    max-width: 100%;
  }
  
  .hero-subtitle {
    max-width: 100%;
  }
  
  .hero-buttons {
    flex-direction: column;
    gap: var(--spacing-sm);
    width: 100%;
    max-width: 30rem;
  }
  
  .hero-buttons .btn {
    width: 100%;
  }
  
  .grid {
    grid-template-columns: 1fr;
  }
  
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
  
  [class^="col-span-"] {
    grid-column: span 12;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .footer-legal {
    margin-top: var(--spacing-sm);
  }
  
  .chat-card {
    max-width: 90%;
  }
}

@media (max-width: 576px) {
  html {
    font-size: 54%;
  }
  
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .hero {
    padding: 10rem 0 5rem;
  }
  
  .hero-title {
    font-size: 3.4rem;
  }
  
  .hero-subtitle {
    font-size: 1.8rem;
  }
  
  .section {
    padding: var(--spacing-md) 0;
  }
  
  .section-lg {
    padding: var(--spacing-lg) 0;
  }
  
  .modal-dialog {
    width: calc(100% - 3rem);
  }
  
  .cookie-consent {
    width: calc(100% - 3rem);
    bottom: 1.5rem;
  }
  
  .cookie-actions {
    flex-direction: column;
  }
  
  .chat-card {
    max-width: 100%;
  }
  
  .form-actions {
    flex-direction: column;
  }
  
  .form-actions .btn {
    width: 100%;
  }
}

@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;
  }
}