/* ==========================================
   CSS CUSTOM PROPERTIES & DESIGN TOKENS
   ========================================== */

:root {
  /* Colors - CADENX Cyan Palette */
  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #131318;
  --color-bg-card: rgba(25, 25, 35, 0.6);
  --color-text-primary: #f5f5f7;
  --color-text-secondary: #a1a1aa;
  --color-accent-primary: #00d9ff;
  --color-accent-secondary: #00b8d4;
  --color-accent-gradient: linear-gradient(135deg, #00d9ff 0%, #00b8d4 100%);
  --color-success: #10b981;

  /* Glassmorphism */
  --glass-bg: rgba(25, 25, 35, 0.4);
  --glass-border: rgba(0, 217, 255, 0.15);
  --glass-blur: blur(20px);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 3rem;
  --font-size-4xl: 4rem;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 40px rgba(0, 217, 255, 0.3);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ==========================================
   GLOBAL RESET & BASE STYLES
   ========================================== */

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

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

body {
  font-family: var(--font-family);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ==========================================
   TYPOGRAPHY
   ========================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: clamp(2.5rem, 6vw, var(--font-size-4xl));
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

h2 {
  font-size: clamp(2rem, 4vw, var(--font-size-3xl));
  color: var(--color-text-primary);
}

h3 {
  font-size: var(--font-size-2xl);
  color: var(--color-text-primary);
}

p {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

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

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

/* ==========================================
   NAVIGATION
   ========================================== */

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  padding: var(--spacing-sm) 0;
  transition: all var(--transition-base);
}

nav.scrolled {
  box-shadow: var(--shadow-md);
}

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

nav .logo {
  display: flex;
  align-items: center;
  transition: transform var(--transition-fast);
}

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

nav .logo-img {
  height: 40px;
  width: auto;
  display: block;
  filter: brightness(1);
  transition: filter var(--transition-fast);
}

nav .logo:hover .logo-img {
  filter: brightness(1.1) drop-shadow(0 0 10px rgba(0, 217, 255, 0.7));
}

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

nav a {
  position: relative;
  color: var(--color-text-secondary);
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent-gradient);
  transition: width var(--transition-base);
}

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

/* ==========================================
   LAYOUT UTILITIES
   ========================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================
   HERO SECTION
   ========================================== */

#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
  overflow: hidden;
  opacity: 1;
  transform: none;
}

#hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0, 217, 255, 0.1) 0%, rgba(0, 184, 212, 0.1) 100%);
  z-index: 1;
}

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

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.hero-content h1 {
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 1s ease;
}

.hero-content .tagline {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 1s ease 0.2s both;
}

.hero-content .hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
  animation: fadeInUp 1s ease 0.3s both;
}

.hero-content .cta-group {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease 0.5s both;
}

/* ==========================================
   PHILOSOPHY SECTION
   ========================================== */

#philosophy {
  background: linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
}

.philosophy-content {
  max-width: 1000px;
  margin: 0 auto;
}

.philosophy-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.philosophy-header h2 {
  margin-bottom: var(--spacing-sm);
}

.philosophy-tagline {
  font-size: var(--font-size-xl);
  font-style: italic;
  color: var(--color-accent-primary);
  margin-bottom: 0;
}

.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.philosophy-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: var(--spacing-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.philosophy-card.main-card {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, rgba(0, 217, 255, 0.1) 0%, rgba(0, 184, 212, 0.1) 100%);
  border: 2px solid var(--color-accent-primary);
}

.philosophy-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-accent-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.philosophy-card:hover::before {
  transform: scaleX(1);
}

.philosophy-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent-primary);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.philosophy-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.philosophy-card h3 {
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-xl);
}

.philosophy-card p {
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0;
}

.philosophy-card strong {
  color: var(--color-accent-primary);
  font-weight: 600;
}

/* ==========================================
   BUTTONS
   ========================================== */

.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  font-size: var(--font-size-lg);
  font-weight: 600;
  border-radius: 12px;
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: center;
  border: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  transform: translate(-50%, -50%);
  transition: width var(--transition-base), height var(--transition-base);
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 60px rgba(0, 217, 255, 0.5);
}

.btn-secondary {
  background: var(--glass-bg);
  border: 2px solid var(--glass-border);
  color: var(--color-text-primary);
  backdrop-filter: var(--glass-blur);
}

.btn-secondary:hover {
  border-color: var(--color-accent-primary);
  transform: translateY(-2px);
}

/* ==========================================
   SERVICES SECTION
   ========================================== */

#services {
  background: var(--color-bg-secondary);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-header h2 {
  margin-bottom: var(--spacing-sm);
}

.section-header p {
  font-size: var(--font-size-xl);
  max-width: 700px;
  margin: 0 auto;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.service-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: var(--spacing-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-accent-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-accent-primary);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.service-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
  color: var(--color-accent-primary);
  transition: all var(--transition-base);
}

.service-icon svg {
  width: 48px;
  height: 48px;
  stroke: var(--color-accent-primary);
  transition: all var(--transition-base);
}

.service-card:hover .service-icon svg {
  transform: scale(1.1);
  filter: drop-shadow(0 0 8px var(--color-accent-primary));
}

.service-card h3 {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.service-card p {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ==========================================
   EXPERTISE SECTION
   ========================================== */

.expertise-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.expertise-text h2 {
  margin-bottom: var(--spacing-md);
}

.expertise-text p {
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-lg);
}

.expertise-highlights {
  display: grid;
  gap: var(--spacing-sm);
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  transition: all var(--transition-base);
}

.highlight-item:hover {
  transform: translateX(8px);
  border-color: var(--color-accent-primary);
}

.highlight-icon {
  font-size: 1.5rem;
  color: var(--color-accent-primary);
}

.highlight-item p {
  margin: 0;
  color: var(--color-text-primary);
}

/* ==========================================
   CONTACT SECTION
   ========================================== */

#contact {
  background: var(--color-bg-secondary);
}

.contact-container {
  max-width: 800px;
  margin: 0 auto;
}

.contact-form {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: var(--spacing-lg);
}

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

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

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  background: var(--color-bg-primary);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  color: var(--color-text-primary);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent-primary);
  box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.1);
}

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

/* ==========================================
   FOOTER
   ========================================== */

footer {
  background: var(--color-bg-primary);
  border-top: 1px solid var(--glass-border);
  padding: var(--spacing-md) 0;
  text-align: center;
}

footer p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
}

/* ==========================================
   ANIMATIONS
   ========================================== */

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

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

@keyframes float {

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

  50% {
    transform: translateY(-10px);
  }
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

@media (max-width: 968px) {
  .expertise-content {
    grid-template-columns: 1fr;
  }

  .philosophy-grid {
    grid-template-columns: 1fr;
  }

  nav ul {
    gap: var(--spacing-sm);
  }
}

@media (max-width: 640px) {
  :root {
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
  }

  nav {
    padding: 0.75rem 0;
  }

  nav .logo-img {
    height: 28px;
  }

  nav ul {
    gap: 0.5rem;
  }

  nav a {
    font-size: 0.85rem;
  }

  #hero {
    padding-top: 100px;
  }

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

  .services-grid {
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
  }
}

/* ==========================================
   UTILITY CLASSES
   ========================================== */

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

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

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

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

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

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

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