/* ==========================================
   Charifund-Style Charity Website CSS
   Modern, Premium Design for Nonprofit
   ========================================== */

/* ==========================================
   CSS Variables & Design Tokens
   ========================================== */
:root {
  /* Primary Colors - Vibrant and Modern */
  /* Primary Colors - Light Green Theme */
  --primary-color: #8BC34A;
  --primary-dark: #689F38;
  /* Darker Green for hover */
  --primary-light: #AED581;
  /* Lighter Green */

  /* Secondary Colors - Teal Accents */
  --secondary-color: #5DBDB4;
  --secondary-dark: #4AA9A0;
  --secondary-light: #7DCCC5;

  /* Purpose-Specific Colors */
  --highlight-color: #8BC34A;
  --bg-soft-grey: #F2F4F7;
  --text-dark-grey: #333333;

  /* Accent Colors */
  --accent-color: #FFD93D;
  --success-color: #2ECC71;
  --warning-color: #F39C12;
  --danger-color: #E74C3C;

  /* Neutral Colors */
  --dark-color: #1A1A2E;
  --dark-color: #1A1A2E;
  --dark-alt: #1A2E1A;
  /* Dark Forest Green for Footer */
  --gray-dark: #4F4F4F;
  --gray-medium: #828282;
  --gray-light: #E0E0E0;
  --light-color: #F2F4F7;
  /* Soft Grey Background */
  --white: #FFFFFF;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #8BC34A 0%, #689F38 100%);
  --gradient-secondary: linear-gradient(135deg, #5DBDB4 0%, #4AA9A0 100%);
  --gradient-hero: linear-gradient(135deg, rgba(93, 189, 180, 0.9) 0%, rgba(78, 205, 196, 0.9) 100%);
  --gradient-overlay: linear-gradient(180deg, rgba(26, 26, 46, 0.7) 0%, rgba(26, 26, 46, 0.9) 100%);

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 5rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 30px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.2);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

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

body {
  font-family: var(--font-primary);
  color: var(--text-dark-grey);
  line-height: 1.6;
  background-color: var(--white);

  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

/* ==========================================
   Typography
   ========================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--dark-color);
}

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

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

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

h4 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
}

p {
  margin-bottom: 1rem;
  color: var(--gray-dark);
  font-size: 1.05rem;
}

/* ==========================================
   Utility Classes
   ========================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

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

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-title h2 {
  position: relative;
  display: inline-block;
  margin-bottom: var(--spacing-sm);
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--gray-medium);
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

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

.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
  display: inline-block;
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
  font-family: var(--font-primary);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--gradient-secondary);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

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

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

.btn-white {
  background: var(--white);
  color: var(--primary-color);
  box-shadow: var(--shadow-md);
}

.btn-white:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.btn-lg {
  padding: 1.25rem 2.5rem;
  font-size: 1.125rem;
}

.btn-highlight {
  background: var(--highlight-color);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.btn-highlight:hover {
  background: var(--highlight-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  color: var(--white);
}

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

/* ==========================================
   Header & Navigation
   ========================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--primary-color);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: var(--transition-normal);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.logo {
  font-size: 1.75rem;
  font-weight: 700;
  font-family: var(--font-heading);
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  color: var(--white);
  /* Removed gradient text for better visibility on colored background */
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-weight: 500;
  color: var(--white);
  position: relative;
  padding: 0.5rem 0;
}

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

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

.nav-link:hover {
  color: rgba(255, 255, 255, 0.8);
}

.nav-cta {
  margin-left: 1rem;
}

/* Navbar Donate Button - White on Green */
.nav-cta .btn {
  background: var(--white);
  border-color: var(--white);
  color: var(--primary-color);
  font-weight: 600;
}

.nav-cta .btn:hover {
  background: var(--bg-soft-grey);
  border-color: var(--bg-soft-grey);
  color: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition-normal);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 70px;
  overflow: hidden;
}

/* Hero Background Slides */
.hero-slides {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 1s ease-in-out;
}

.hero-slide.active {
  opacity: 1;
}

/* Hero Overlay with Teal Tint */
/* Hero Overlay - Transparent to show image */
.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.2);
  /* Slight dark tint for text readability, but mostly transparent */
  z-index: 1;
}

/* Pattern overlay removed as per request */

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  color: var(--white);
  max-width: 800px;
  padding: 2rem;
}

.hero-subtitle {
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: 1rem;
  opacity: 0.95;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 1.1;
  margin-bottom: 1.5rem;
  color: var(--white);
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.hero-description {
  font-size: 1.25rem;
  line-height: 1.6;
  margin-bottom: 2.5rem;
  opacity: 0.95;
  color: var(--white);
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-stats {
  position: absolute;
  bottom: 50px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 3rem;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  padding: 2rem 3rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 3;
}

.hero-stat {
  text-align: center;
  color: var(--white);
}

.hero-stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  display: block;
  margin-bottom: 0.25rem;
}

.hero-stat-label {
  font-size: 0.95rem;
  opacity: 0.9;
}

/* Hero Slider Dots */
.hero-slider-dots {
  position: absolute;
  bottom: 120px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.75rem;
  z-index: 3;
}

.hero-slider-dots .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 2px solid transparent;
}

.hero-slider-dots .dot:hover {
  background: rgba(255, 255, 255, 0.8);
  transform: scale(1.2);
}

.hero-slider-dots .dot.active {
  background: var(--white);
  border-color: var(--white);
  transform: scale(1.3);
}


/* ==========================================
   Campaign Cards
   ========================================== */
.campaigns-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: var(--spacing-lg);
}

.campaign-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.campaign-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

.campaign-image {
  position: relative;
  height: 250px;
  overflow: hidden;
}

.campaign-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.campaign-card:hover .campaign-image img {
  transform: scale(1.1);
}

.campaign-category {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--gradient-primary);
  color: var(--white);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
}

.campaign-content {
  padding: 1.5rem;
}

.campaign-title {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--dark-color);
}

.campaign-description {
  color: var(--gray-medium);
  margin-bottom: 1.5rem;
}

.campaign-progress {
  margin-bottom: 1.5rem;
}

.progress-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.progress-raised {
  font-weight: 700;
  color: var(--primary-color);
}

.progress-goal {
  color: var(--gray-medium);
}

.progress-bar-container {
  height: 8px;
  background: var(--gray-light);
  border-radius: 10px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 10px;
  transition: width 1s ease;
}

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

.campaign-donors {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--gray-medium);
  font-size: 0.95rem;
}

/* ==========================================
   Features Section
   ========================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
  margin-top: var(--spacing-lg);
}

.feature-card {
  text-align: center;
  padding: 2.5rem 1.5rem;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: linear-gradient(135deg, rgba(93, 189, 180, 0.1) 0%, rgba(78, 205, 196, 0.1) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  transition: var(--transition-normal);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1) rotate(10deg);
}

.feature-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.feature-description {
  color: var(--gray-medium);
}

/* ==========================================
   Statistics Counter
   ========================================== */
.stats-section {
  background: var(--gradient-primary);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
  position: relative;
  z-index: 2;
}

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

.stat-number {
  font-size: 3.5rem;
  font-weight: 700;
  display: block;
  margin-bottom: 0.5rem;
  color: var(--white);
}

.stat-label {
  font-size: 1.1rem;
  opacity: 0.95;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ==========================================
   Testimonials
   ========================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: var(--spacing-lg);
}

.testimonial-card {
  background: var(--white);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  position: relative;
  transition: var(--transition-normal);
}

.testimonial-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.testimonial-quote {
  font-size: 3rem;
  color: var(--primary-color);
  opacity: 0.2;
  line-height: 0;
  margin-bottom: 1rem;
}

.testimonial-text {
  font-style: italic;
  margin-bottom: 1.5rem;
  color: var(--gray-dark);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.testimonial-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
}

.testimonial-info h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.testimonial-role {
  font-size: 0.875rem;
  color: var(--gray-medium);
}

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

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
  color: var(--white);
  margin-bottom: 1.5rem;
  font-size: 1.25rem;
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 1rem;
  display: block;
}

.footer-description {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link {
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition-fast);
  display: inline-block;
}

.footer-link:hover {
  color: var(--primary-color);
  transform: translateX(5px);
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-link {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-normal);
  font-size: 1.25rem;
}

.social-link:hover {
  background: var(--primary-color);
  transform: translateY(-3px);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: rgba(255, 255, 255, 0.7);
}

.contact-icon {
  color: var(--primary-color);
  font-size: 1.25rem;
  margin-top: 0.25rem;
}

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

/* ==========================================
   Donation Form
   ========================================== */
.donation-form-section {
  background: var(--light-color);
}

.donation-form {
  max-width: 700px;
  margin: 0 auto;
  background: var(--white);
  padding: 3rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.amount-selector {
  margin-bottom: 2rem;
}

.amount-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.amount-option {
  padding: 1.25rem;
  border: 2px solid var(--gray-light);
  border-radius: var(--radius-md);
  text-align: center;
  cursor: pointer;
  transition: var(--transition-normal);
  font-weight: 600;
  background: var(--white);
}

.amount-option:hover {
  border-color: var(--primary-color);
  background: rgba(255, 107, 53, 0.05);
}

.amount-option.active {
  background: var(--gradient-primary);
  color: var(--white);
  border-color: transparent;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--dark-color);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 1rem;
  border: 2px solid var(--gray-light);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-family: var(--font-primary);
  transition: var(--transition-normal);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

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

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 968px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    padding: 2rem;
    gap: 1.5rem;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-lg);
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-cta {
    margin-left: 0;
    width: 100%;
  }

  .nav-cta .btn {
    width: 100%;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
  }

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

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

  .hero-stats {
    position: static;
    transform: none;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 3rem;
    padding: 1.5rem;
  }

  .campaigns-grid,
  .features-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .amount-options {
    grid-template-columns: repeat(2, 1fr);
  }

  .donation-form {
    padding: 2rem 1.5rem;
  }
}

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.8s ease forwards;
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Scroll reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}