/* 
  Trevita Technologies Website Stylesheet
  Theme: Premium Minimal Dark Tech (Cloud & AI)
  Fonts: Outfit (headings), Inter (body)
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  /* Color Tokens */
  --bg-primary: #070a13;
  --bg-secondary: #0d1224;
  --bg-tertiary: #161f38;
  --border-color: rgba(255, 255, 255, 0.07);
  --border-hover: rgba(255, 255, 255, 0.15);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --accent-primary: #6366f1; /* Indigo */
  --accent-secondary: #a855f7; /* Purple */
  --accent-tertiary: #06b6d4; /* Cyan */
  
  --gradient-brand: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 50%, var(--accent-tertiary) 100%);
  --gradient-text: linear-gradient(135deg, #ffffff 0%, #cbd5e1 50%, #94a3b8 100%);
  --gradient-glow: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(168, 85, 247, 0.15) 50%, rgba(6, 182, 212, 0.15) 100%);
  
  /* Fonts */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Outfit', sans-serif;
  
  /* Layout & Animation Tokens */
  --max-width: 1200px;
  --header-height: 80px;
  --border-radius-sm: 8px;
  --border-radius-md: 16px;
  --border-radius-lg: 24px;
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: hidden;
  line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

p {
  color: var(--text-secondary);
  font-weight: 300;
}

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

/* Background Glow Effects */
.glow-bg {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, rgba(168, 85, 247, 0.05) 50%, rgba(0,0,0,0) 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  filter: blur(80px);
}

.glow-1 { top: -10%; right: -10%; }
.glow-2 { top: 60%; left: -20%; }

/* Navigation Bar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 100;
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(7, 10, 19, 0.7);
  transition: var(--transition-smooth);
}

.navbar-container {
  max-width: var(--max-width);
  height: 100%;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.03em;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--gradient-brand);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--bg-primary);
  -webkit-text-fill-color: var(--bg-primary);
  font-size: 1.1rem;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2.5rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0;
}

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

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

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

.nav-btn {
  padding: 0.6rem 1.2rem;
  border-radius: var(--border-radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition-smooth);
}

.nav-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  border: none;
  background: transparent;
  z-index: 101;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition-fast);
}

/* Sections */
section {
  position: relative;
  padding: 8rem 2rem 6rem 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

/* Hero Section */
.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding-top: 10rem;
}

.hero-tagline {
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 1.5rem;
  display: inline-block;
  padding: 0.4rem 1rem;
  background-color: rgba(99, 102, 241, 0.1);
  border-radius: 50px;
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.hero-title {
  font-size: 4rem;
  line-height: 1.1;
  font-weight: 800;
  max-width: 900px;
  margin-bottom: 2rem;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.25rem;
  max-width: 600px;
  margin-bottom: 3rem;
}

.hero-actions {
  display: flex;
  gap: 1.5rem;
}

.btn-primary {
  padding: 0.9rem 2rem;
  border-radius: var(--border-radius-sm);
  background: var(--gradient-brand);
  color: var(--bg-primary);
  font-weight: 600;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
  transition: var(--transition-smooth);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
  padding: 0.9rem 2rem;
  border-radius: var(--border-radius-sm);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  font-weight: 500;
  font-size: 1rem;
  transition: var(--transition-smooth);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-hover);
  transform: translateY(-3px);
}

/* Sections Header */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 5rem auto;
}

.section-label {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-primary);
  margin-bottom: 0.75rem;
  display: block;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1.25rem;
}

/* Verticals Section & Dynamic Showcase */
.verticals-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

.vertical-tabs {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.5rem;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  padding: 0.5rem 1.5rem;
  cursor: pointer;
  transition: var(--transition-fast);
  position: relative;
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  color: var(--text-primary);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -1.65rem;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-brand);
}

.showcase-content {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: center;
}

.showcase-info h3 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.showcase-info p {
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

.partners-logos {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-top: 1rem;
}

.partner-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.03);
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
}

.partner-logo svg {
  width: 20px;
  height: 20px;
}

/* Service Cards */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.service-card {
  background: linear-gradient(135deg, rgba(13, 18, 36, 0.7) 0%, rgba(22, 31, 56, 0.5) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 2rem;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-glow);
  opacity: 0;
  transition: var(--transition-smooth);
  z-index: 0;
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-hover);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

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

.service-card * {
  position: relative;
  z-index: 1;
}

.service-icon {
  width: 48px;
  height: 48px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  color: var(--accent-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.25rem;
  transition: var(--transition-smooth);
}

.service-card:hover .service-icon {
  background: var(--gradient-brand);
  color: var(--bg-primary);
  border-color: transparent;
  transform: scale(1.1) rotate(5deg);
}

.service-card h4 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.service-card p {
  font-size: 0.95rem;
}

/* Future Verticals Placeholder Styles */
.future-verticals {
  text-align: center;
  background: linear-gradient(135deg, rgba(13, 18, 36, 0.4) 0%, rgba(22, 31, 56, 0.2) 100%);
  border: 1px dashed var(--border-color);
  padding: 3rem;
  border-radius: var(--border-radius-md);
  margin-top: 4rem;
}

.future-verticals h4 {
  color: var(--text-secondary);
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.future-verticals p {
  font-size: 0.95rem;
  max-width: 500px;
  margin: 0 auto;
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 5rem;
  align-items: center;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.about-feature-item {
  display: flex;
  gap: 1.5rem;
}

.about-feature-num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.about-feature-text h4 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.about-feature-text p {
  font-size: 0.95rem;
}

/* Contact Section & Premium Glassmorphic Form */
.contact-container {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 5rem;
}

.contact-info h3 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.contact-details {
  list-style: none;
  margin-top: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-detail-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--text-secondary);
}

.contact-detail-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
}

.contact-form-container {
  background: rgba(13, 18, 36, 0.5);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 3rem;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: relative;
}

.form-group {
  margin-bottom: 1.75rem;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

.form-input {
  width: 100%;
  padding: 1rem 1.2rem;
  background: rgba(7, 10, 19, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: var(--transition-smooth);
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.15);
  background: rgba(7, 10, 19, 0.9);
}

textarea.form-input {
  resize: vertical;
  min-height: 120px;
}

.submit-btn {
  width: 100%;
  padding: 1rem;
  border-radius: var(--border-radius-sm);
  background: var(--gradient-brand);
  color: var(--bg-primary);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.2);
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

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

/* Success Message Alert */
.form-success {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-secondary);
  border-radius: var(--border-radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-smooth);
  z-index: 10;
}

.form-success.show {
  opacity: 1;
  pointer-events: all;
}

.success-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-tertiary);
  border: 1px solid rgba(6, 182, 212, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 2rem;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  padding: 4rem 2rem;
  margin-top: 8rem;
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-copyright {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.footer-link {
  font-size: 0.9rem;
  color: var(--text-muted);
}

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

/* Scroll reveal animations class */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Responsive Design */
@media (max-width: 1024px) {
  :root {
    --max-width: 100%;
  }
  
  .hero-title {
    font-size: 3.25rem;
  }
  
  .showcase-content {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .about-grid, .contact-container {
    grid-template-columns: 1fr;
    gap: 4rem;
  }
}

@media (max-width: 768px) {
  section {
    padding: 6rem 1.5rem 4rem 1.5rem;
  }
  
  .navbar-container {
    padding: 0 1.5rem;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    right: -100%;
    width: 80%;
    height: calc(100vh - var(--header-height));
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    flex-direction: column;
    padding: 3rem;
    gap: 2rem;
    transition: var(--transition-smooth);
    z-index: 99;
  }
  
  .nav-menu.open {
    right: 0;
  }
  
  .nav-btn {
    text-align: center;
  }
  
  .hero {
    padding-top: 8rem;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-description {
    font-size: 1.1rem;
  }
  
  .hero-actions {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
  }
  
  .btn-primary, .btn-secondary {
    justify-content: center;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-form-container {
    padding: 2rem 1.5rem;
  }
  
  .footer-container {
    flex-direction: column;
    gap: 2rem;
    text-align: center;
  }
  
  .footer-links {
    flex-direction: column;
    gap: 1rem;
  }
}