/* PlengMa.com - Main Stylesheet */
/* ================================ */

/* CSS Variables */
:root {
  /* Colors */
  --primary-orange: #FF8C00;
  --primary-blue: #00A9E0;
  --primary-dark: #0F172A;
  --primary-light: #F8FAFC;
  
  --accent-pink: #EC4899;
  --accent-purple: #8B5CF6;
  --success-green: #10B981;
  --warning-amber: #F59E0B;
  
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  
  /* Transitions */
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Prompt', 'Inter', sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: var(--primary-light);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

body[lang="en"] {
  font-family: 'Inter', sans-serif;
}

body[lang="th"] {
  font-family: 'Prompt', sans-serif;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Kanit', 'Inter', sans-serif;
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--space-lg);
}

body[lang="en"] h1,
body[lang="en"] h2,
body[lang="en"] h3,
body[lang="en"] h4,
body[lang="en"] h5,
body[lang="en"] h6 {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
}

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--accent-pink);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* Header & Navigation */
header {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: var(--space-md) 0;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--primary-light);
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
  text-decoration: none;
  transition: var(--transition);
}

.logo:hover {
  color: var(--primary-light);
  transform: scale(1.02);
}

.logo img {
  height: 40px;
  width: auto;
  filter: drop-shadow(2px 2px 4px rgba(0,0,0,0.3));
}

.logo span {
  white-space: nowrap;
}

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

.nav-menu a {
  font-weight: 500;
  padding: var(--space-sm) var(--space-md);
  border-radius: 8px;
  transition: var(--transition);
}

.nav-menu a:hover {
  background: var(--glass-bg);
  transform: translateY(-2px);
}

.lang-toggle {
  display: flex;
  gap: var(--space-sm);
  background: var(--glass-bg);
  padding: var(--space-sm) var(--space-md);
  border-radius: 20px;
  border: 1px solid var(--glass-border);
}

.lang-toggle button {
  background: transparent;
  border: none;
  color: var(--primary-light);
  padding: var(--space-sm) var(--space-md);
  border-radius: 15px;
  cursor: pointer;
  font-weight: 500;
  transition: var(--transition);
}

.lang-toggle button.active {
  background: var(--primary-orange);
  color: white;
}

.lang-toggle button:hover {
  transform: scale(1.05);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--primary-light);
  font-size: var(--text-2xl);
  cursor: pointer;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: var(--space-3xl) 0;
  animation: fadeInUp 0.8s ease;
}

.hero h1 {
  font-size: var(--text-5xl);
  margin-bottom: var(--space-md);
  text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
}

.hero .subtitle {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-lg);
  color: rgba(255,255,255,0.9);
}

.hero .description {
  font-size: var(--text-lg);
  max-width: 800px;
  margin: 0 auto var(--space-2xl);
  color: rgba(255,255,255,0.8);
}

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

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--space-md) var(--space-2xl);
  border-radius: 50px;
  font-weight: 600;
  font-size: var(--text-lg);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-orange), var(--accent-pink));
  color: white;
  box-shadow: 0 8px 20px rgba(255, 140, 0, 0.4);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 12px 30px rgba(255, 140, 0, 0.6);
}

.btn-secondary {
  background: var(--glass-bg);
  border: 2px solid var(--glass-border);
  color: white;
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.2);
  transform: translateY(-3px);
}

/* Features Section */
.features {
  padding: var(--space-3xl) 0;
  background: rgba(0,0,0,0.2);
}

.section-title {
  text-align: center;
  font-size: var(--text-4xl);
  margin-bottom: var(--space-3xl);
  text-shadow: 2px 2px 6px rgba(0,0,0,0.3);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-2xl);
  margin-top: var(--space-2xl);
}

.feature-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: var(--space-2xl);
  transition: var(--transition);
  animation: fadeInUp 0.6s ease;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(0,0,0,0.3);
  border-color: var(--primary-orange);
}

.feature-card h3 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-lg);
  color: var(--primary-orange);
}

.feature-card ul {
  list-style: none;
}

.feature-card li {
  padding: var(--space-sm) 0;
  padding-left: var(--space-xl);
  position: relative;
}

.feature-card li:before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success-green);
  font-weight: bold;
  font-size: var(--text-xl);
}

/* How It Works Section */
.how-it-works {
  padding: var(--space-3xl) 0;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-2xl);
  margin-top: var(--space-2xl);
}

.step-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: var(--space-2xl);
  text-align: center;
  transition: var(--transition);
  position: relative;
  animation: fadeInUp 0.8s ease;
}

.step-card:before {
  content: attr(data-step);
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary-orange), var(--accent-pink));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
  font-weight: bold;
  box-shadow: 0 5px 15px rgba(255, 140, 0, 0.4);
}

.step-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(0,0,0,0.3);
}

.step-card h3 {
  margin-top: var(--space-lg);
  color: var(--primary-light);
}

/* Journey Section */
.journey {
  padding: var(--space-3xl) 0;
  background: rgba(0,0,0,0.2);
}

.journey-timeline {
  display: flex;
  justify-content: space-around;
  align-items: center;
  gap: var(--space-2xl);
  margin-top: var(--space-2xl);
  flex-wrap: wrap;
}

.journey-item {
  flex: 1;
  min-width: 200px;
  text-align: center;
  padding: var(--space-xl);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  transition: var(--transition);
  animation: fadeInUp 1s ease;
}

.journey-item:hover {
  transform: scale(1.05);
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.journey-item img {
  max-width: 150px;
  margin: 0 auto var(--space-lg);
  border-radius: 10px;
}

.journey-arrow {
  font-size: var(--text-3xl);
  color: var(--primary-orange);
}

/* Easy to Use Section */
.easy-to-use {
  padding: var(--space-3xl) 0;
  text-align: center;
}

.easy-to-use p {
  font-size: var(--text-xl);
  margin: var(--space-lg) 0;
  color: rgba(255,255,255,0.9);
}

/* Donation Section */
.donation-section {
  padding: var(--space-3xl) 0;
  background: rgba(0,0,0,0.2);
  text-align: center;
}

.donation-section .description {
  font-size: var(--text-xl);
  margin: var(--space-lg) 0;
  color: rgba(255,255,255,0.9);
}

.donation-section .note {
  font-style: italic;
  color: rgba(255,255,255,0.7);
  margin: var(--space-lg) 0;
}

/* CTA Section */
.cta-section {
  padding: var(--space-3xl) 0;
  text-align: center;
}

.cta-section h2 {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-2xl);
}

/* Footer */
footer {
  background: rgba(0,0,0,0.4);
  border-top: 1px solid var(--glass-border);
  padding: var(--space-2xl) 0 var(--space-lg);
  margin-top: var(--space-3xl);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2xl);
  margin-bottom: var(--space-xl);
}

.footer-links {
  display: flex;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.social-links {
  display: flex;
  gap: var(--space-md);
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--glass-bg);
  border-radius: 50%;
  transition: var(--transition);
  font-size: var(--text-xl);
}

.social-links a:hover {
  background: var(--primary-orange);
  transform: scale(1.1);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--glass-border);
}

.footer-bottom p {
  margin: var(--space-sm) 0;
  color: rgba(255,255,255,0.7);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  
  .nav-menu {
    display: none;
    width: 100%;
    flex-direction: column;
    text-align: center;
    background: rgba(0,0,0,0.9);
    padding: var(--space-lg);
    border-radius: 10px;
    margin-top: var(--space-md);
  }
  
  .nav-menu.active {
    display: flex;
  }
  
  .hero h1 {
    font-size: var(--text-3xl);
  }
  
  .hero .subtitle {
    font-size: var(--text-xl);
  }
  
  .section-title {
    font-size: var(--text-3xl);
  }
  
  .cta-buttons {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
    max-width: 300px;
  }
  
  .journey-arrow {
    display: none;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-links {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  :root {
    --text-5xl: 2rem;
    --text-4xl: 1.75rem;
    --text-3xl: 1.5rem;
    --text-2xl: 1.25rem;
  }
  
  .container {
    padding: 0 var(--space-md);
  }
  
  .hero {
    padding: var(--space-2xl) 0;
  }
  
  .features,
  .how-it-works,
  .journey,
  .easy-to-use,
  .donation-section,
  .cta-section {
    padding: var(--space-2xl) 0;
  }
}

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

.mt-1 { margin-top: var(--space-md); }
.mt-2 { margin-top: var(--space-lg); }
.mt-3 { margin-top: var(--space-xl); }

.mb-1 { margin-bottom: var(--space-md); }
.mb-2 { margin-bottom: var(--space-lg); }
.mb-3 { margin-bottom: var(--space-xl); }

.hidden {
  display: none;
}

.visible {
  display: block;
}