/* 
  ELTNEG Technology - Stylesheet 
  Premium Dark Monochrome Theme
*/

:root {
  /* Colors */
  --bg-base: #09090b;
  --bg-surface: #18181b;
  --bg-surface-hover: #27272a;
  --text-main: #f4f4f5;
  --text-muted: #a1a1aa;
  --border-color: #3f3f46;
  --accent: #ffffff;
  --error: #ef4444;

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Outfit', 'Inter', system-ui, sans-serif;

  /* Spacing */
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 4rem;
  --spacing-xxl: 8rem;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

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

/* Background Effects */
.glow-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  background: radial-gradient(circle at 50% 0%, rgba(39, 39, 42, 0.4) 0%, transparent 60%);
  z-index: -1;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

.section-title {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.125rem;
  max-width: 600px;
}

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

/* Typography Enhancements */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-main);
}

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

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1.5rem 0;
  z-index: 100;
  background: rgba(9, 9, 11, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.brand-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.05em;
}

.brand-logo span {
  color: var(--text-muted);
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a:not(.btn) {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
}

.nav-links a:not(.btn):hover {
  color: var(--text-main);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--text-main);
  color: var(--bg-base);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.2);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-main);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-surface-hover);
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  background: var(--text-main);
  color: var(--bg-base);
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 5rem; /* Account for navbar */
}

.hero-text-wrapper {
  max-width: 800px;
}

.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  color: var(--text-muted);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 5vw, 4.5rem);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.hero-title span {
  color: var(--text-muted);
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 600px;
  margin-bottom: 2.5rem;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  margin-bottom: 4rem;
}

.trust-line {
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  display: inline-block;
}

.trust-text {
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Services Section */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2.5rem;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at top left, rgba(255, 255, 255, 0.05), transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.service-card:hover::before {
  opacity: 1;
}

.icon-wrapper {
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Why ELTNEG */
.why-section {
  background: linear-gradient(to bottom, var(--bg-base), var(--bg-surface));
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.two-col-layout {
  max-width: 800px;
  margin: 0 auto;
}

.lead-text {
  font-size: 1.25rem;
  margin-bottom: 3rem;
}

.benefits-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.benefits-list li {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-left: 1.5rem;
  position: relative;
}

.benefits-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  background: var(--text-main);
  border-radius: 50%;
}

.benefits-list li strong {
  font-family: var(--font-display);
  font-size: 1.1rem;
}

.benefits-list li span {
  color: var(--text-muted);
}

/* Process Section */
.process-steps {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

@media (min-width: 768px) {
  .process-steps {
    flex-direction: row;
    align-items: flex-start;
  }
}

.process-step {
  flex: 1;
  position: relative;
}

.step-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.1);
  margin-bottom: 1rem;
  line-height: 1;
}

.process-step h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.process-step p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.step-connector {
  display: none;
}

@media (min-width: 768px) {
  .step-connector {
    display: block;
    width: 2rem;
    height: 1px;
    background: var(--border-color);
    margin-top: 4rem;
  }
}

/* Contact Form */
.contact-section {
  background: var(--bg-base);
}

.form-container {
  max-width: 600px;
  margin: 0 auto;
}

.contact-header {
  text-align: center;
  margin-bottom: 3rem;
}

.contact-header p {
  color: var(--text-muted);
}

.fallback-email {
  margin-top: 0.5rem;
  font-size: 0.9rem;
}

.fallback-email a {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.contact-form {
  background: var(--bg-surface);
  padding: 2.5rem;
  border-radius: 16px;
  border: 1px solid var(--border-color);
}

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

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text-muted);
}

.required {
  color: var(--text-main);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--bg-base);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: rgba(255, 255, 255, 0.5);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.1);
}

.error-msg {
  display: none;
  color: var(--error);
  font-size: 0.8rem;
  margin-top: 0.4rem;
}

.form-group.has-error input,
.form-group.has-error textarea {
  border-color: var(--error);
}

.form-group.has-error .error-msg {
  display: block;
  animation: shake 0.4s ease-in-out;
}

.submit-btn {
  width: 100%;
  justify-content: center;
  margin-top: 1rem;
  padding: 1rem;
}

.form-disclaimer {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 1.5rem;
}

/* Footer */
.site-footer {
  padding: 3rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-legal {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.footer-links p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Animations */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

.animate-up {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp var(--transition-slow) forwards;
}

.animate-fade-in {
  opacity: 0;
  animation: fadeIn var(--transition-slow) 0.5s forwards;
}

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

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

/* Base styles for scroll animation elements */
.sync-animate {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.sync-animate.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
  .hero-ctas {
    flex-direction: column;
  }
  
  .nav-links {
    display: none; /* In a real app we'd add a hamburger, but keeping it simple for scope */
  }

  .nav-links:has(.btn) {
    display: block; /* Show just the Let's talk button potentially, or hide entirely */
  }
  
  .navbar .btn-outline {
    display: none;
  }
}