/* Cloudjet Labs - Design System */
/* Based on Mindville Visual Identity */

/* ========================================
   CSS Variables
   ======================================== */
:root {
  /* Primary Colors */
  --black: #000000;
  --white: #FFFFFF;
  
  /* Secondary Colors (Hierarchy Only) */
  --dark-gray: #111111;
  --medium-gray: #222222;
  --light-gray: #666666;
  --border-gray: #E5E5E5;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Spacing */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 48px;
  --space-xl: 80px;
  --space-2xl: 120px;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

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

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

body {
  font-family: var(--font-family);
  font-weight: 400;
  line-height: 1.6;
  color: var(--black);
  background-color: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.dark-mode {
  color: var(--white);
  background-color: var(--black);
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: 1.25rem;
}

p {
  font-size: 1.125rem;
  color: var(--light-gray);
  max-width: 65ch;
}

.text-large {
  font-size: 1.25rem;
}

.text-small {
  font-size: 0.875rem;
}

.text-caption {
  font-size: 0.75rem;
  color: var(--light-gray);
}

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

a:hover {
  opacity: 0.7;
}

/* ========================================
   Layout
   ======================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

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

.section-lg {
  padding: var(--space-2xl) 0;
}

/* ========================================
   Header & Navigation
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--white);
  border-bottom: 1px solid var(--border-gray);
  transition: background-color var(--transition-normal);
}

.dark-mode .header {
  background-color: var(--black);
  border-bottom-color: var(--medium-gray);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

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

.logo img {
  height: 32px;
  width: auto;
  display: block;
}

.footer .logo img {
  height: 28px;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--light-gray);
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--black);
  opacity: 1;
}

.dark-mode .nav-link:hover,
.dark-mode .nav-link.active {
  color: var(--white);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--black);
  transition: transform var(--transition-fast);
}

.dark-mode .nav-toggle span {
  background-color: var(--white);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-family: var(--font-family);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  border: none;
}

.btn:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

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

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

.dark-mode .btn-primary {
  background-color: var(--white);
  color: var(--black);
}

.btn-secondary {
  background-color: transparent;
  color: var(--black);
  border: 1px solid var(--border-gray);
}

.dark-mode .btn-secondary {
  color: var(--white);
  border-color: var(--medium-gray);
}

.btn-text {
  background: none;
  border: none;
  padding: var(--space-xs) 0;
  color: var(--black);
}

.dark-mode .btn-text {
  color: var(--white);
}

.btn-full {
  width: 100%;
}

/* ========================================
   Cards
   ======================================== */
.card {
  background-color: var(--white);
  border: 1px solid var(--border-gray);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: border-color var(--transition-fast);
}

.card:hover {
  border-color: var(--light-gray);
}

.dark-mode .card {
  background-color: var(--dark-gray);
  border-color: var(--medium-gray);
}

.dark-mode .card:hover {
  border-color: var(--light-gray);
}

.card-dark {
  background-color: var(--black);
  color: var(--white);
  border: none;
}

.card-dark p {
  color: var(--light-gray);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 72px;
}

.hero-content {
  max-width: 800px;
}

.hero-tag {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--light-gray);
  margin-bottom: var(--space-md);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero h1 {
  margin-bottom: var(--space-md);
}

.hero p {
  margin-bottom: var(--space-lg);
}

.hero-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* ========================================
   Features Grid
   ======================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
}

.feature-card {
  padding: var(--space-lg);
}

.feature-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-md);
  stroke: var(--black);
  stroke-width: 1.5;
  fill: none;
}

.dark-mode .feature-icon {
  stroke: var(--white);
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.feature-card p {
  font-size: 1rem;
}

/* ========================================
   Stats Section
   ======================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  text-align: center;
}

.stat-item h3 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.stat-item p {
  font-size: 1rem;
  margin: 0 auto;
}

/* ========================================
   Services Section
   ======================================== */
.services-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.service-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  border: 1px solid var(--border-gray);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
}

.service-item:hover {
  border-color: var(--black);
}

.dark-mode .service-item {
  border-color: var(--medium-gray);
}

.dark-mode .service-item:hover {
  border-color: var(--white);
}

.service-number {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--light-gray);
  min-width: 32px;
}

.service-content h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-xs);
}

.service-content p {
  font-size: 1rem;
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
  background-color: var(--black);
  color: var(--white);
}

.cta-section h2 {
  margin-bottom: var(--space-sm);
}

.cta-section p {
  margin-bottom: var(--space-lg);
}

.cta-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  padding: var(--space-xl) 0 var(--space-lg);
  border-top: 1px solid var(--border-gray);
}

.dark-mode .footer {
  border-top-color: var(--medium-gray);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.footer-brand p {
  font-size: 1rem;
  margin-top: var(--space-sm);
  max-width: 280px;
}

.footer-column h4 {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--light-gray);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-links a {
  font-size: 0.9375rem;
  color: var(--light-gray);
}

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

.dark-mode .footer-links a:hover {
  color: var(--white);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-md);
  border-top: 1px solid var(--border-gray);
}

.dark-mode .footer-bottom {
  border-top-color: var(--medium-gray);
}

.footer-bottom p {
  font-size: 0.875rem;
}

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

.footer-legal a {
  font-size: 0.875rem;
  color: var(--light-gray);
}

/* ========================================
   Page Header
   ======================================== */
.page-header {
  padding-top: calc(72px + var(--space-xl));
  padding-bottom: var(--space-xl);
  text-align: center;
}

.page-header h1 {
  margin-bottom: var(--space-sm);
}

.page-header p {
  margin: 0 auto;
}

/* ========================================
   Contact Form
   ======================================== */
.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--font-family);
  font-size: 1rem;
  border: 1px solid var(--border-gray);
  border-radius: var(--radius-sm);
  background-color: var(--white);
  color: var(--black);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--black);
}

.dark-mode .form-input,
.dark-mode .form-textarea {
  background-color: var(--dark-gray);
  color: var(--white);
  border-color: var(--medium-gray);
}

.dark-mode .form-input:focus,
.dark-mode .form-textarea:focus {
  border-color: var(--white);
}

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

/* ========================================
   Two Column Layout
   ======================================== */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.two-col.reverse {
  direction: rtl;
}

.two-col.reverse > * {
  direction: ltr;
}

/* ========================================
   Team Grid
   ======================================== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-md);
}

.team-card {
  text-align: center;
  padding: var(--space-lg);
}

.team-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background-color: var(--border-gray);
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 600;
  color: var(--light-gray);
}

.team-card h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
}

.team-card p {
  font-size: 0.9375rem;
  margin: 0 auto;
}

/* ========================================
   Values Grid
   ======================================== */
.values-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.value-card {
  padding: var(--space-lg);
}

.value-card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

/* ========================================
   Contact Info
   ======================================== */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact-item h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.contact-item p {
  font-size: 1rem;
}

/* ========================================
   Mobile Menu
   ======================================== */
.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--white);
  padding: var(--space-lg);
  z-index: 999;
}

.dark-mode .mobile-menu {
  background-color: var(--black);
}

.mobile-menu.active {
  display: block;
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.mobile-nav-links a {
  font-size: 1.5rem;
  font-weight: 500;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }
  
  .footer-brand {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .hero {
    min-height: auto;
    padding-top: calc(72px + var(--space-xl));
    padding-bottom: var(--space-xl);
  }
  
  .two-col {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  .two-col.reverse {
    direction: ltr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  .footer-brand {
    grid-column: auto;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
  
  .values-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .hero-actions .btn {
    width: 100%;
  }
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center {
  text-align: center;
}

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

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

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

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

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

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

.hidden {
  display: none;
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

.fade-in-delay-1 {
  animation-delay: 0.1s;
  opacity: 0;
}

.fade-in-delay-2 {
  animation-delay: 0.2s;
  opacity: 0;
}

.fade-in-delay-3 {
  animation-delay: 0.3s;
  opacity: 0;
}