/* ============================================
   Sadaqah Jariyah Foundation - Design System
   ============================================ */

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

/* === CSS Custom Properties === */
:root {
  /* Colors */
  --color-gold: #D4AF37;
  --color-gold-light: #E8C968;
  --color-gold-dark: #B8941F;
  --color-emerald: #059669;
  --color-emerald-light: #10B981;
  --color-emerald-dark: #047857;
  --color-sand: #F5F1E8;
  --color-sand-dark: #E8E1D3;
  --color-charcoal: #2D3748;
  --color-charcoal-light: #4A5568;
  --color-white: #FFFFFF;
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F3F4F6;
  --color-gray-200: #E5E7EB;
  --color-gray-700: #374151;
  --color-gray-900: #111827;
  
  /* Typography */
  --font-display: 'Playfair Display', serif;
  --font-body: 'Inter', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-body);
  color: var(--color-charcoal);
  line-height: 1.6;
  background-color: var(--color-sand);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: 1.2;
  font-weight: 700;
  color: var(--color-charcoal);
}

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

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: var(--spacing-sm);
}

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-sm);
  font-size: 1.125rem;
  color: var(--color-charcoal-light);
}

.subtitle {
  font-size: 1.25rem;
  font-weight: 300;
  color: var(--color-charcoal-light);
}

/* === Layout === */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-narrow {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-3xl) 0;
}

.section-sm {
  padding: var(--spacing-2xl) 0;
}

/* === Navigation === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(255, 255, 255, 0.98);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  max-width: 1280px;
  margin: 0 auto;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-emerald);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.nav-logo span {
  color: var(--color-gold);
}

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

.nav-link {
  font-weight: 500;
  color: var(--color-charcoal);
  position: relative;
  padding: var(--spacing-xs) 0;
  transition: color var(--transition-base);
}

.nav-link:hover {
  color: var(--color-emerald);
}

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

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

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-charcoal);
  transition: all var(--transition-base);
}

/* === Buttons === */
.btn {
  display: inline-block;
  padding: 1rem 2rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  text-align: center;
  font-size: 1rem;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-emerald) 0%, var(--color-emerald-dark) 100%);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, var(--color-emerald-dark) 0%, var(--color-emerald) 100%);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, var(--color-gold-dark) 0%, var(--color-gold) 100%);
}

.btn-outline {
  border: 2px solid var(--color-emerald);
  color: var(--color-emerald);
  background: transparent;
}

.btn-outline:hover {
  background: var(--color-emerald);
  color: var(--color-white);
}

/* === Hero Section === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-sand) 0%, var(--color-sand-dark) 100%);
  padding-top: 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: radial-gradient(circle at top right, rgba(212, 175, 55, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-hadith {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-style: italic;
  color: var(--color-charcoal);
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
  position: relative;
  padding: 0 var(--spacing-xl);
}

.hero-hadith::before,
.hero-hadith::after {
  content: '"';
  font-size: 3rem;
  color: var(--color-gold);
  opacity: 0.3;
  position: absolute;
}

.hero-hadith::before {
  top: -1rem;
  left: 0;
}

.hero-hadith::after {
  bottom: -2rem;
  right: 0;
}

.hero-source {
  font-size: 0.875rem;
  color: var(--color-gold);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-xl);
}

.hero-title {
  background: linear-gradient(135deg, var(--color-emerald) 0%, var(--color-gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-md);
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  color: var(--color-charcoal-light);
  margin-bottom: var(--spacing-xl);
  font-weight: 300;
}

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

/* === Cards === */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.card-icon {
  width: 64px;
  height: 64px;
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--color-emerald-light) 0%, var(--color-emerald) 100%);
  color: var(--color-white);
  font-size: 2rem;
}

.card-title {
  color: var(--color-charcoal);
  margin-bottom: var(--spacing-sm);
}

.card-description {
  color: var(--color-charcoal-light);
  line-height: 1.8;
}

/* === Glassmorphism Donation Card === */
.glass-card {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(255, 255, 255, 0.5);
}

.donation-amounts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
  margin: var(--spacing-md) 0;
}

.amount-btn {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border: 2px solid var(--color-gray-200);
  background: var(--color-white);
  font-weight: 600;
  transition: all var(--transition-base);
  color: var(--color-charcoal);
}

.amount-btn:hover,
.amount-btn.active {
  border-color: var(--color-emerald);
  background: var(--color-emerald);
  color: var(--color-white);
}

/* === Badge === */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  color: var(--color-white);
  border-radius: var(--radius-xl);
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* === Sections === */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
  margin-bottom: var(--spacing-sm);
}

.section-divider {
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-emerald) 0%, var(--color-gold) 100%);
  margin: var(--spacing-md) auto;
  border-radius: var(--radius-sm);
}

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

.bg-sand {
  background: var(--color-sand);
}

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

/* === Testimonial === */
.testimonial {
  background: var(--color-white);
  border-left: 4px solid var(--color-gold);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  margin: var(--spacing-xl) 0;
  box-shadow: var(--shadow-md);
}

.testimonial-text {
  font-style: italic;
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-charcoal);
}

.testimonial-author {
  font-weight: 600;
  color: var(--color-gold);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* === Footer === */
.footer {
  background: var(--color-charcoal);
  color: var(--color-white);
  padding: var(--spacing-2xl) 0 var(--spacing-md);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

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

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

.footer-links li {
  margin-bottom: var(--spacing-xs);
}

.footer-links a {
  color: var(--color-gray-200);
  transition: color var(--transition-base);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  text-align: center;
  color: var(--color-gray-200);
  font-size: 0.875rem;
}

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

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === Responsive Design === */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transform: translateX(-100%);
    transition: transform var(--transition-base);
  }
  
  .nav-menu.active {
    transform: translateX(0);
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .hero {
    min-height: 80vh;
  }
  
  .hero-hadith {
    padding: 0 var(--spacing-md);
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
  
  .donation-amounts {
    grid-template-columns: 1fr;
  }
  
  .section {
    padding: var(--spacing-2xl) 0;
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
  }
}