/* Vonga Website - Brand-Aligned Stylesheet */

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

:root {
  /* Brand Colors */
  --navy: #303E55;
  --aqua: #33BECC;
  --coral: #F5856E;
  
  /* Gray Scale */
  --gray-50: #F9FAFB;
  --gray-100: #F5F7FA;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-500: #9BA6B3;
  --gray-600: #6B7280;
  --gray-800: #374151;
  --gray-900: #1B1E25;
  
  /* Semantic */
  --text: #0A0A0A;
  --bg: #FFFFFF;
  --muted-bg: #E6F7F9;
  --success: #10B981;
  
  /* Spacing */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 40px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 80px;
  --space-5xl: 96px;
  --space-6xl: 128px;
  
  /* Shadows */
  --shadow-soft: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-glow-aqua: 0 0 15px rgba(51,190,204,0.45);
  --shadow-glow-coral: 0 0 15px rgba(245,133,110,0.45);
  
  /* Motion */
  --ease: cubic-bezier(0.25,0.1,0.25,1.0);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 600ms;
  
  /* Border Radius */
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  /* Layout */
  --max-width: 1280px;
  --header-height: 72px;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Now', 'Segoe UI', system-ui, sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: var(--bg);
  font-size: 16px;
  padding-top: 0;
}

/* Typography */
h1 { 
  font-size: 48px; 
  font-weight: 700; 
  line-height: 1.1; 
  margin-bottom: var(--space-md); 
  letter-spacing: -0.02em;
}
h2 { 
  font-size: 36px; 
  font-weight: 600; 
  line-height: 1.2; 
  margin-bottom: var(--space-md); 
  letter-spacing: -0.01em;
}
h3 { 
  font-size: 24px; 
  font-weight: 600; 
  line-height: 1.3; 
  margin-bottom: var(--space-sm); 
}
h4 { 
  font-size: 20px; 
  font-weight: 600; 
  line-height: 1.4; 
  margin-bottom: var(--space-xs); 
}

p { 
  margin-bottom: var(--space-md); 
  color: var(--gray-600); 
}

strong {
  color: var(--text);
  font-weight: 600;
}

/* Header/Nav */
header {
  background: transparent;
  padding: var(--space-sm) 0;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: all var(--duration-normal) var(--ease);
}

header.scrolled {
  background: var(--bg);
  box-shadow: var(--shadow-soft);
}

header.scrolled nav a {
  color: var(--text);
}

header.scrolled .logo img {
  filter: invert(64%) sepia(88%) saturate(425%) hue-rotate(138deg) brightness(95%) contrast(92%);
}

nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-2xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  width: 100%;
}

.logo {
  display: flex;
  align-items: center;
  height: 96px;
  overflow: visible;
}

.logo img {
  height: 96px;
  width: auto;
  filter: brightness(0) invert(1);
  transition: filter var(--duration-normal) var(--ease);
}

nav ul {
  display: flex;
  list-style: none;
  gap: var(--space-2xl);
  align-items: center;
}

nav a {
  text-decoration: none;
  color: white;
  font-weight: 500;
  font-size: 16px;
  transition: color var(--duration-fast) var(--ease);
}

nav a:hover {
  color: var(--aqua);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.mobile-menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background: white;
  margin: 5px 0;
  transition: all 0.3s ease;
  border-radius: 2px;
}

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

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

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

header.scrolled .mobile-menu-toggle span {
  background: var(--text);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--gray-900) 100%);
  color: white;
  padding: calc(var(--space-6xl) + 120px) var(--space-2xl) var(--space-6xl);
  text-align: center;
  position: relative;
  overflow: hidden;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 50%, rgba(51,190,204,0.15), transparent 50%);
  pointer-events: none;
}

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

.hero .container {
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero h1 {
  color: white;
  max-width: 800px;
  margin: 0 auto var(--space-md);
  font-size: 64px;
}

.hero p {
  color: rgba(255,255,255,0.85);
  font-size: 20px;
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.6;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--duration-normal) var(--ease);
  border: none;
  cursor: pointer;
  font-size: 16px;
  font-family: inherit;
}

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

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-coral);
}

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

.btn-aqua:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-aqua);
}

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

.btn-coral:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-coral);
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid white;
}

.btn-secondary:hover {
  background: white;
  color: var(--navy);
}

.cta-group {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* Container/Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-2xl);
}

section {
  padding: var(--space-5xl) var(--space-2xl);
}

.section-muted {
  background: var(--muted-bg);
}

.section-dark {
  background: var(--navy);
  color: white;
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: white;
}

.section-dark p {
  color: rgba(255,255,255,0.85);
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-subtitle {
  text-align: center;
  font-size: 20px;
  color: var(--gray-600);
  max-width: 700px;
  margin: calc(var(--space-2xl) * -1) auto var(--space-3xl);
}

.section-dark .section-subtitle {
  color: rgba(255,255,255,0.75);
}

/* Grid Layouts */
.grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xl);
  justify-content: center;
}

.grid > * {
  flex: 1 1 auto;
}

.grid-2 > * { 
  min-width: 300px;
  max-width: calc(50% - var(--space-xl));
}

.grid-3 > * { 
  min-width: 250px;
  max-width: calc(33.333% - var(--space-xl));
}

.grid-4 > * { 
  min-width: 200px;
  max-width: calc(25% - var(--space-xl));
}

@media (max-width: 768px) {
  .grid > * {
    max-width: 100%;
  }
}

/* 2-Column Split Layout */
.split-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

@media (min-width: 768px) {
  .split-section {
    grid-template-columns: 1fr 1fr;
  }
}

/* Cards */
.card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-soft);
  transition: all var(--duration-normal) var(--ease);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.section-dark .card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
}

.card h3 {
  color: var(--aqua);
  margin-bottom: var(--space-md);
}

.section-dark .card h3 {
  color: var(--aqua);
}

.section-dark .card h4 {
  color: white;
}

.card-icon {
  font-size: 40px;
  margin-bottom: var(--space-md);
}

.card ul {
  list-style: none;
  padding: 0;
}

.card li {
  padding-left: var(--space-md);
  position: relative;
  margin-bottom: var(--space-xs);
  color: var(--gray-600);
}

.section-dark .card li {
  color: rgba(255,255,255,0.85);
}

.card li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--aqua);
  font-weight: bold;
}

/* Steps/Process */
.steps {
  display: flex;
  gap: var(--space-2xl);
  margin: var(--space-3xl) 0;
  flex-wrap: wrap;
  justify-content: center;
}

.step {
  flex: 1;
  min-width: 250px;
  text-align: center;
}

.step-number {
  display: inline-block;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--aqua);
  color: white;
  line-height: 60px;
  font-size: 24px;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

/* Testimonials */
.testimonial {
  background: white;
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--aqua);
  font-style: italic;
  box-shadow: var(--shadow-soft);
}

.section-dark .testimonial {
  background: rgba(255,255,255,0.05);
  border-left: 4px solid var(--coral);
}

.testimonial p {
  color: var(--text);
}

.section-dark .testimonial p {
  color: white;
}

.testimonial-author {
  margin-top: var(--space-md);
  font-style: normal;
  font-weight: 600;
  color: var(--text);
}

.section-dark .testimonial-author {
  color: white;
}

.testimonial-role {
  font-style: normal;
  color: var(--gray-500);
  font-size: 14px;
}

.section-dark .testimonial-role {
  color: rgba(255,255,255,0.65);
}

/* Stats */
.stats {
  display: flex;
  gap: var(--space-4xl);
  justify-content: center;
  flex-wrap: wrap;
  margin: var(--space-3xl) 0;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 48px;
  font-weight: 700;
  color: var(--aqua);
  display: block;
  line-height: 1;
}

.section-dark .stat-number {
  color: var(--coral);
}

.stat-label {
  color: var(--gray-600);
  font-size: 16px;
  margin-top: var(--space-xs);
}

.section-dark .stat-label {
  color: rgba(255,255,255,0.75);
}

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

label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 600;
  color: var(--text);
  font-size: 14px;
}

input, textarea, select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 16px;
  font-family: inherit;
  transition: all var(--duration-fast) var(--ease);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--aqua);
  box-shadow: 0 0 0 3px rgba(51,190,204,0.1);
}

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

/* Footer */
footer {
  background: var(--navy);
  color: white;
  padding: var(--space-4xl) var(--space-2xl) var(--space-2xl);
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-section h4 {
  color: white;
  margin-bottom: var(--space-md);
}

.footer-section ul {
  list-style: none;
}

.footer-section a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  display: block;
  margin-bottom: var(--space-xs);
  transition: color var(--duration-fast) var(--ease);
}

.footer-section a:hover {
  color: var(--aqua);
}

.footer-section p {
  color: rgba(255,255,255,0.7);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-2xl);
  border-top: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.6);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-aqua { color: var(--aqua); }
.mt-1 { margin-top: var(--space-md); }
.mt-2 { margin-top: var(--space-lg); }
.mt-3 { margin-top: var(--space-2xl); }
.mb-1 { margin-bottom: var(--space-md); }
.mb-2 { margin-bottom: var(--space-lg); }
.mb-3 { margin-bottom: var(--space-2xl); }

/* Responsive */
@media (max-width: 768px) {
  h1 { font-size: 36px; }
  .hero h1 { font-size: 42px; }
  h2 { font-size: 28px; }
  h3 { font-size: 20px; }
  
  nav {
    justify-content: center;
  }
  
  nav .logo {
    position: relative;
    z-index: 1001;
  }
  
  .mobile-menu-toggle {
    display: block;
    position: absolute;
    right: var(--space-2xl);
    top: 50%;
    transform: translateY(-50%);
  }
  
  nav ul {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: var(--navy);
    flex-direction: column;
    justify-content: flex-start;
    padding: 100px 30px 30px;
    gap: var(--space-lg);
    transition: right 0.3s ease;
    box-shadow: -2px 0 10px rgba(0,0,0,0.3);
    z-index: 1000;
  }
  
  nav ul.active {
    right: 0;
  }
  
  nav ul li {
    width: 100%;
  }
  
  nav ul li a {
    display: block;
    padding: 12px 0;
    font-size: 18px;
  }
  
  nav ul li a.btn {
    text-align: center;
  }
  
  .hero {
    padding: var(--space-4xl) var(--space-md);
  }
  
  .hero p {
    font-size: 18px;
  }
  
  section {
    padding: var(--space-4xl) var(--space-md);
  }
  
  .cta-group {
    flex-direction: column;
    width: 100%;
  }
  
  .btn {
    width: 100%;
    text-align: center;
  }
  
  .stats {
    gap: var(--space-2xl);
  }
}