/* ============================================
   ELITE INNOVATION - PREMIUM DESIGN SYSTEM
   R20,000 Professional Website
   ============================================ */

/* ============================================
   CSS VARIABLES & DESIGN TOKENS
   ============================================ */
:root {
  /* Colors - Premium Palette */
  --primary: #00d4ff;
  --primary-dark: #00a8cc;
  --secondary: #ffd700;
  --accent: #ff6b35;

  --navy: #0a1628;
  --navy-light: #1a2942;
  --navy-lighter: #2a3a5c;

  --white: #ffffff;
  --gray-100: #f8f9fa;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-400: #ced4da;
  --gray-500: #adb5bd;
  --gray-600: #6c757d;
  --gray-700: #495057;
  --gray-800: #343a40;
  --gray-900: #212529;

  /* Dark Mode Colors */
  --bg-primary: var(--white);
  --bg-secondary: var(--gray-100);
  --text-primary: var(--gray-900);
  --text-secondary: var(--gray-600);
  --border-color: var(--gray-300);

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;

  --font-xs: 0.75rem;
  --font-sm: 0.875rem;
  --font-base: 1rem;
  --font-lg: 1.125rem;
  --font-xl: 1.25rem;
  --font-2xl: 1.5rem;
  --font-3xl: 1.875rem;
  --font-4xl: 2.25rem;
  --font-5xl: 3rem;
  --font-6xl: 3.75rem;

  /* Spacing (8px grid) */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 2.5rem;
  --space-6: 3rem;
  --space-8: 4rem;
  --space-10: 5rem;
  --space-12: 6rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 600ms cubic-bezier(0.68, -0.55, 0.265, 1.55);

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* Dark Mode Variables */
[data-theme="dark"] {
  --bg-primary: var(--navy);
  --bg-secondary: var(--navy-light);
  --text-primary: var(--white);
  --text-secondary: var(--gray-400);
  --border-color: var(--navy-lighter);
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-primary);
  font-size: var(--font-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color var(--transition-base), color var(--transition-base);
  overflow-x: hidden;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-3);
  color: var(--text-primary);
}

h1 {
  font-size: var(--font-5xl);
}

h2 {
  font-size: var(--font-4xl);
}

h3 {
  font-size: var(--font-3xl);
}

h4 {
  font-size: var(--font-2xl);
}

h5 {
  font-size: var(--font-xl);
}

h6 {
  font-size: var(--font-lg);
}

p {
  margin-bottom: var(--space-3);
  color: var(--text-secondary);
}

/* ============================================
   LAYOUT UTILITIES
   ============================================ */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--space-4);
}

.section {
  padding: var(--space-12) 0;
}

.section-sm {
  padding: var(--space-8) 0;
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--space-4);
}

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

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

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

/* Flexbox Utilities */
.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

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

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

/* ============================================
   PRELOADER
   ============================================ */
.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.preloader.hidden {
  opacity: 0;
  visibility: hidden;
}

.preloader-logo {
  width: 120px;
  height: 120px;
  animation: pulse 2s ease-in-out infinite;
}

/* ============================================
   NAVIGATION
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
}

[data-theme="dark"] .header {
  background: rgba(10, 22, 40, 0.95);
}

.header.scrolled {
  padding: var(--space-2) 0;
  box-shadow: var(--shadow-lg);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  transition: padding var(--transition-base);
}


.logo {
  font-size: var(--font-2xl);
  font-weight: 700;
  font-family: var(--font-heading);
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.logo-img {
  height: 60px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 2px 8px rgba(0, 212, 255, 0.3));
  transition: all var(--transition-base);
}

.logo-img:hover {
  filter: drop-shadow(0 4px 12px rgba(0, 212, 255, 0.5));
  transform: scale(1.05);
}

/* Footer logo styling */
.footer-title .logo-img {
  height: 50px;
  filter: drop-shadow(0 2px 6px rgba(0, 212, 255, 0.4));
}

.nav-menu {
  display: flex;
  gap: var(--space-4);
  list-style: none;
}

.nav-link {
  font-weight: 500;
  position: relative;
  padding: var(--space-1) 0;
  transition: color var(--transition-fast);
}

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

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

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

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: var(--space-1);
}

.menu-toggle span {
  width: 28px;
  height: 3px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

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

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Dark Mode Toggle */
.theme-toggle {
  width: 50px;
  height: 26px;
  background: var(--gray-300);
  border-radius: var(--radius-full);
  position: relative;
  cursor: pointer;
  transition: background var(--transition-base);
}

[data-theme="dark"] .theme-toggle {
  background: var(--primary);
}

.theme-toggle::before {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background: var(--white);
  border-radius: 50%;
  transition: transform var(--transition-base);
}

[data-theme="dark"] .theme-toggle::before {
  transform: translateX(24px);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(10, 22, 40, 0.9) 0%, rgba(26, 41, 66, 0.8) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  color: var(--white);
  max-width: 900px;
  padding: 0 var(--space-4);
}

.hero-title {
  font-size: var(--font-6xl);
  margin-bottom: var(--space-4);
  color: var(--white);
  animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
  font-size: var(--font-2xl);
  margin-bottom: var(--space-6);
  color: var(--gray-300);
  animation: fadeInUp 1s ease-out 0.2s backwards;
}

.hero-cta {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease-out 0.4s backwards;
}

/* Floating Elements */
.hero-float {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: float 6s ease-in-out infinite;
  z-index: 2;
}

.hero-float-1 {
  width: 400px;
  height: 400px;
  background: var(--primary);
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.hero-float-2 {
  width: 300px;
  height: 300px;
  background: var(--secondary);
  bottom: 20%;
  right: 15%;
  animation-delay: 2s;
}

.hero-float-3 {
  width: 250px;
  height: 250px;
  background: var(--accent);
  top: 50%;
  right: 10%;
  animation-delay: 4s;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: var(--font-base);
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--secondary) 0%, #ffb700 100%);
  color: var(--navy);
  box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 215, 0, 0.4);
}

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

.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
}

.btn-lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-lg);
}

/* ============================================
   CARDS
   ============================================ */
.card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
  border: 1px solid var(--border-color);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
}

.card-glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .card-glass {
  background: rgba(26, 41, 66, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.card-image {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-3);
}

.card-title {
  font-size: var(--font-2xl);
  margin-bottom: var(--space-2);
}

.card-text {
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
}

/* Service Cards with 3D Effect */
.service-card {
  position: relative;
  perspective: 1000px;
}

.service-card-inner {
  position: relative;
  transition: transform var(--transition-slow);
  transform-style: preserve-3d;
}

.service-card:hover .service-card-inner {
  transform: rotateY(5deg) rotateX(5deg);
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: 500;
  color: var(--text-primary);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-3);
  font-size: var(--font-base);
  font-family: inherit;
  border: 2px solid var(--border-color);
  border-radius: var(--radius);
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: all var(--transition-base);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-error {
  color: #dc3545;
  font-size: var(--font-sm);
  margin-top: var(--space-1);
}

.form-success {
  color: #28a745;
  font-size: var(--font-sm);
  margin-top: var(--space-1);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--navy);
  color: var(--white);
  padding: var(--space-10) 0 var(--space-4);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.footer-title {
  color: var(--white);
  margin-bottom: var(--space-3);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--space-2);
}

.footer-links a {
  color: var(--gray-400);
  transition: color var(--transition-fast);
}

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

/* Nav Link */
.nav-link {
  color: var(--text-light);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
  font-size: 0.95rem;
}

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

/* Dropdown Menu */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: var(--card-bg);
  min-width: 250px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
  z-index: 1000;
  border-radius: 8px;
  padding: 10px 0;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  max-height: 400px;
  overflow-y: auto;
}

.dropdown-content a {
  color: var(--text-light);
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  transition: background-color 0.3s;
  font-size: 0.9rem;
}

.dropdown-content a:hover {
  background-color: rgba(0, 212, 255, 0.1);
  color: var(--primary);
}

.dropdown:hover .dropdown-content {
  display: block;
}

/* Scrollbar for dropdown */
.dropdown-content::-webkit-scrollbar {
  width: 8px;
}

.dropdown-content::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
}

.dropdown-content::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 4px;
}

/* Mobile responsive dropdown adjustment */
@media (max-width: 768px) {
  .dropdown {
    width: 100%;
  }

  .dropdown-content {
    position: static;
    box-shadow: none;
    background-color: rgba(255, 255, 255, 0.02);
    width: 100%;
    max-height: 300px;
  }
}

.footer-bottom {
  padding-top: var(--space-4);
  border-top: 1px solid var(--navy-lighter);
  text-align: center;
  color: var(--gray-400);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0px);
  }

  50% {
    transform: translateY(-20px);
  }
}

@keyframes pulse {

  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }

  50% {
    transform: scale(1.05);
    opacity: 0.8;
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }

  100% {
    background-position: 1000px 0;
  }
}

@keyframes slideReveal {
  from {
    clip-path: inset(0 100% 0 0);
  }

  to {
    clip-path: inset(0 0 0 0);
  }
}

/* Scroll Reveal Classes */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all var(--transition-slow);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
  :root {
    --font-6xl: 3rem;
    --font-5xl: 2.5rem;
    --font-4xl: 2rem;
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --font-6xl: 2.5rem;
    --font-5xl: 2rem;
    --font-4xl: 1.75rem;
  }

  .menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: var(--bg-primary);
    flex-direction: column;
    padding: var(--space-4);
    box-shadow: var(--shadow-lg);
    transform: translateX(-100%);
    transition: transform var(--transition-base);
  }

  .nav-menu.active {
    transform: translateX(0);
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .hero-cta {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  :root {
    --font-6xl: 2rem;
    --font-5xl: 1.75rem;
  }

  .container {
    padding: 0 var(--space-3);
  }

  .section {
    padding: var(--space-8) 0;
  }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center {
  text-align: center;
}

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

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

.mt-1 {
  margin-top: var(--space-1);
}

.mt-2 {
  margin-top: var(--space-2);
}

.mt-3 {
  margin-top: var(--space-3);
}

.mt-4 {
  margin-top: var(--space-4);
}

.mt-5 {
  margin-top: var(--space-5);
}

.mt-6 {
  margin-top: var(--space-6);
}

.mb-1 {
  margin-bottom: var(--space-1);
}

.mb-2 {
  margin-bottom: var(--space-2);
}

.mb-3 {
  margin-bottom: var(--space-3);
}

.mb-4 {
  margin-bottom: var(--space-4);
}

.mb-5 {
  margin-bottom: var(--space-5);
}

.mb-6 {
  margin-bottom: var(--space-6);
}

.hidden {
  display: none;
}

.visible {
  display: block;
}