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

:root {
  /* Grayscale palette */
  --color-primary: #333333;      /* Dark Gray */
  --color-primary-dark: #000000; /* Black */
  --color-primary-light: #999999; /* Light Gray */
  --color-secondary: #CCCCCC;    /* Very Light Gray */
  --color-background: #F5F5F5;   /* Light Gray Background */
  --color-surface: #FFFFFF;      /* Pure white for cards */
  --color-accent: #EAEAEA;       /* Light Accent */
  
  --color-text-dark: #111111;
  --color-text-muted: #666666;
  
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.15);
  
  --border-radius-sm: 12px;
  --border-radius-md: 20px;
  --border-radius-lg: 32px;
  
  --spacing-section: 80px;
  --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Reset & Global */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Outfit', sans-serif;
  background-color: var(--color-background);
  color: var(--color-text-dark);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

/* Typography */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-dark);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1.5rem;
  text-align: center;
}

p {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

/* Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.125rem;
  cursor: pointer;
  border: none;
  transition: var(--transition-smooth);
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.btn-disabled {
  background-color: #E2E8F0;
  color: #A0AEC0;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-disabled:hover {
  transform: none;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(253, 251, 247, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,0,0,0.05);
  transition: var(--transition-smooth);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-icon-img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  object-fit: cover;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-weight: 500;
  color: var(--color-text-muted);
}

.nav-links a:hover {
  color: var(--color-primary);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text-dark);
  cursor: pointer;
}

/* Hero Section */
.hero {
  padding-top: 160px;
  padding-bottom: 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -10%;
  left: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--color-primary-light) 0%, transparent 70%);
  opacity: 0.3;
  z-index: -1;
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  top: 20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-secondary) 0%, transparent 70%);
  opacity: 0.2;
  z-index: -1;
  border-radius: 50%;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.age-notice-pill {
  display: inline-block;
  padding: 6px 16px;
  background-color: var(--color-accent);
  color: var(--color-text-dark);
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-mockup {
  margin-top: 60px;
  position: relative;
  max-width: 320px;
  margin-left: auto;
  margin-right: auto;
}

.hero-mockup img {
  width: 100%;
  border-radius: 40px;
  box-shadow: var(--shadow-lg);
  border: 8px solid var(--color-surface);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
  100% { transform: translateY(0px); }
}

/* About Section */
.about {
  background-color: var(--color-surface);
  padding: 100px 0;
}

.about-card {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  padding: 40px;
  background: linear-gradient(135deg, var(--color-background) 0%, var(--color-surface) 100%);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.about-card p {
  font-size: 1.25rem;
  color: var(--color-text-dark);
  margin-bottom: 0;
}

/* Features Section */
.features {
  background-color: var(--color-background);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.feature-card {
  background-color: var(--color-surface);
  padding: 40px 30px;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
  border: 1px solid transparent;
  text-align: center;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background-color: var(--color-primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: white;
}

.feature-card h3 {
  margin-bottom: 12px;
  font-size: 1.25rem;
}

.feature-card p {
  font-size: 1rem;
  margin-bottom: 0;
}

/* How It Works Section */
.how-it-works {
  background-color: var(--color-surface);
}

.steps-container {
  display: flex;
  flex-direction: column;
  gap: 30px;
  max-width: 800px;
  margin: 50px auto 0;
}

.step {
  display: flex;
  align-items: center;
  background-color: var(--color-background);
  padding: 30px;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
}

.step-number {
  width: 60px;
  height: 60px;
  flex-shrink: 0;
  background-color: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin-right: 30px;
}

.step-content h3 {
  margin-bottom: 8px;
}

.step-content p {
  margin-bottom: 0;
}

/* Safety & Support Sections */
.safety-support {
  background: linear-gradient(to bottom, var(--color-background), var(--color-accent));
}

.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.info-card {
  background-color: var(--color-surface);
  padding: 40px;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.info-card h3 {
  font-size: 1.5rem;
  margin-bottom: 20px;
  color: var(--color-primary-dark);
}

.info-card p, .info-card ul {
  font-size: 1.05rem;
}

.info-card ul {
  list-style-type: none;
  margin-top: 16px;
}

.info-card li {
  margin-bottom: 12px;
  display: flex;
  align-items: center;
}

.info-card li::before {
  content: '✓';
  color: var(--color-primary);
  font-weight: bold;
  margin-right: 10px;
}

/* Footer */
.site-footer {
  background-color: var(--color-text-dark);
  color: white;
  padding: 80px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 60px;
}

.footer-brand .logo {
  color: white;
  margin-bottom: 16px;
}

.footer-brand p {
  color: var(--color-text-muted);
}

.footer-links h4 {
  color: white;
  margin-bottom: 20px;
  font-size: 1.25rem;
}

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

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--color-text-muted);
  transition: var(--transition-smooth);
}

.footer-links a:hover {
  color: white;
  padding-left: 5px;
}

.footer-bottom {
  text-align: center;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.1);
  color: var(--color-text-muted);
}

/* Pages (Privacy, Terms, etc.) */
.page-header {
  padding: 160px 0 80px;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-background) 100%);
  text-align: center;
}

.page-header h1 {
  margin-bottom: 16px;
}

.page-content {
  padding: 80px 0;
  background-color: var(--color-surface);
}

.content-wrapper {
  max-width: 800px;
  margin: 0 auto;
}

.content-wrapper h2 {
  text-align: left;
  font-size: 1.75rem;
  margin-top: 40px;
  margin-bottom: 20px;
  color: var(--color-primary-dark);
}

.content-wrapper p, .content-wrapper ul {
  margin-bottom: 24px;
}

.content-wrapper ul {
  padding-left: 24px;
  color: var(--color-text-muted);
  font-size: 1.125rem;
}

.content-wrapper li {
  margin-bottom: 12px;
}

.content-wrapper a {
  color: var(--color-primary);
  font-weight: 500;
}

.content-wrapper a:hover {
  text-decoration: underline;
}

/* Mobile Responsive */
@media (max-width: 992px) {
  .split-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background-color: var(--color-surface);
    flex-direction: column;
    padding: 20px;
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-smooth);
    text-align: center;
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-links a:hover {
    padding-left: 0;
  }
  
  .step {
    flex-direction: column;
    text-align: center;
  }
  
  .step-number {
    margin-right: 0;
    margin-bottom: 20px;
  }
}