/* Crescendo Alliance Foundation - Main Styles */

:root {
  /* Brand Colors - Matching Main Platform */
  --primary-teal: #2D5F6F;
  --secondary-teal: #4A90A4;
  --accent-gold: #D4A574;
  --light-bg: #F5F5F5;
  --white: #FFFFFF;
  --text-dark: #333333;
  --text-light: #6A6E73;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--primary-teal);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

p {
  margin-bottom: var(--spacing-sm);
}

a {
  color: var(--secondary-teal);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--primary-teal);
}

/* Layout Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

/* Header */
.header {
  background-color: var(--primary-teal);
  color: var(--white);
  padding: var(--spacing-sm) 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  /* Position is set by JavaScript for sticky functionality */
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex: 1;
}

.header-right {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo {
  height: 75px;
  width: auto;
}

.nav {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.nav a {
  color: var(--white);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 4px;
  transition: background-color 0.3s ease;
}

.nav a:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

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

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary-teal) 0%, var(--secondary-teal) 100%);
  color: var(--white);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.hero h1 {
  color: var(--white);
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.hero p {
  font-size: 1.25rem;
  max-width: 800px;
  margin: 0 auto var(--spacing-md);
}

.hero-intro {
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto;
}

.partnership-intro {
  max-width: 800px;
}

.nonprofit-badge {
  display: inline-block;
  background-color: var(--accent-gold);
  color: var(--primary-teal);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 25px;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  font-size: 0.9rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 6px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  font-size: 1rem;
}

.btn-primary {
  background-color: var(--accent-gold);
  color: var(--primary-teal);
}

.btn-primary:hover {
  background-color: #C69562;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

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

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

.btn-large {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 1.1rem;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin: var(--spacing-md) 0;
}

.card {
  background-color: var(--white);
  border-radius: 8px;
  padding: var(--spacing-md);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.card h3 {
  margin-bottom: var(--spacing-sm);
}

.card-icon {
  font-size: 2.5rem;
  color: var(--secondary-teal);
  margin-bottom: var(--spacing-sm);
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: var(--spacing-sm);
}

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

/* Impact Section */
.impact-bg {
  background-color: var(--light-bg);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  text-align: center;
  margin: var(--spacing-md) 0;
}

.stat {
  padding: var(--spacing-md);
}

.stat-number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--secondary-teal);
  display: block;
}

.stat-label {
  font-size: 1.1rem;
  color: var(--text-light);
}

/* How It Works Section */
.steps {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin: var(--spacing-md) 0;
}

.step {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

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

.step-content h3 {
  margin-bottom: var(--spacing-xs);
}

/* Contact Form */
.contact-form {
  max-width: 600px;
  margin: var(--spacing-md) auto;
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  color: var(--primary-teal);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--spacing-sm);
  border: 2px solid #E0E0E0;
  border-radius: 6px;
  font-family: var(--font-family);
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--secondary-teal);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

/* Footer */
.footer {
  background-color: var(--primary-teal);
  color: var(--white);
  padding: var(--spacing-lg) 0 var(--spacing-md);
}

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

.footer h4 {
  color: var(--white);
  margin-bottom: var(--spacing-sm);
}

.footer a {
  color: var(--white);
  display: block;
  margin-bottom: var(--spacing-xs);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: var(--spacing-md);
  text-align: center;
  color: rgba(255, 255, 255, 0.8);
}

.footer-bottom a {
  display: inline;
}

/* Alert Messages */
.alert {
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 6px;
  margin-bottom: var(--spacing-md);
}

.alert-success {
  background-color: #D4EDDA;
  color: #155724;
  border: 1px solid #C3E6CB;
}

.alert-error {
  background-color: #F8D7DA;
  color: #721C24;
  border: 1px solid #F5C6CB;
}

/* Responsive Design */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .nav {
    display: none;
  }

  .nav.mobile-active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--primary-teal);
    padding: var(--spacing-md);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  }

  .nav-mobile-toggle {
    display: block;
  }

  .step {
    flex-direction: column;
    text-align: center;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }

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

  .stat-number {
    font-size: 2rem;
  }
}

/* Cart Page Styles */
.cart-container {
  max-width: 900px;
  margin: var(--spacing-md) auto;
}

.cart-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: var(--white);
  border-radius: 8px;
  margin-bottom: var(--spacing-sm);
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.cart-item img {
  width: 100px;
  height: 100px;
  object-fit: cover;
  border-radius: 4px;
}

.cart-item-info {
  flex-grow: 1;
}

.cart-item-info h3 {
  margin: 0 0 var(--spacing-xs) 0;
  color: var(--primary-teal);
}

.cart-item-info p {
  margin: 0;
  color: var(--text-light);
  font-size: 0.9rem;
}

.cart-item-price {
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--primary-teal);
  min-width: 100px;
  text-align: right;
}

.cart-item-quantity {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.cart-item-quantity button {
  width: 30px;
  height: 30px;
  border: 1px solid var(--primary-teal);
  background: var(--white);
  color: var(--primary-teal);
  border-radius: 4px;
  cursor: pointer;
  font-size: 1.2rem;
  transition: all 0.3s ease;
}

.cart-item-quantity button:hover {
  background: var(--primary-teal);
  color: var(--white);
}

.cart-item-quantity input {
  width: 50px;
  text-align: center;
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 0.25rem;
}

.cart-item-remove {
  background: #fee;
  color: #c33;
  border: 1px solid #fcc;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.cart-item-remove:hover {
  background: #fcc;
}

.cart-summary {
  background: var(--light-bg);
  padding: var(--spacing-md);
  border-radius: 8px;
  margin-top: var(--spacing-md);
}

.cart-summary-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid #ddd;
}

.cart-summary-row:last-child {
  border-bottom: none;
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--primary-teal);
}

.cart-summary-actions {
  margin-top: var(--spacing-md);
}

.cart-summary-actions .btn {
  width: 100%;
}

.cart-continue-shopping {
  text-align: center;
  margin-top: var(--spacing-sm);
}

.cart-continue-shopping a {
  color: var(--primary-teal);
}

.empty-cart {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
}

.empty-cart-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-sm);
}

/* Checkout Page Styles */
.checkout-container {
  max-width: 600px;
  margin: var(--spacing-md) auto;
  padding: var(--spacing-md);
}

.donation-summary {
  background-color: var(--light-bg);
  padding: var(--spacing-md);
  border-radius: 8px;
  margin-bottom: var(--spacing-md);
}

.donation-summary h3 {
  margin-top: 0;
}

.donation-amount {
  font-size: 2rem;
  font-weight: bold;
  color: var(--primary-teal);
  margin: var(--spacing-xs) 0;
}

#payment-element {
  margin: var(--spacing-md) 0;
}

#payment-message {
  display: none;
  padding: var(--spacing-sm);
  border-radius: 4px;
  margin: var(--spacing-sm) 0;
}

#payment-message.error,
#payment-message.success {
  display: block;
}

#payment-message.error {
  background-color: #fee;
  color: #c33;
  border: 1px solid #fcc;
}

#payment-message.success {
  background-color: #efe;
  color: #3c3;
  border: 1px solid #cfc;
}

.submit-button {
  width: 100%;
  padding: var(--spacing-sm);
  font-size: 1.1rem;
  margin-top: var(--spacing-sm);
}

.submit-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.checkout-return-link {
  text-align: center;
  margin-top: var(--spacing-md);
}

.checkout-return-link a {
  color: var(--primary-teal);
}

/* Products Page Styles */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin: var(--spacing-md) 0;
}

.product-card {
  background: var(--white);
  border-radius: 8px;
  padding: var(--spacing-md);
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  display: flex;
  flex-direction: column;
}

.product-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 4px;
  margin-bottom: var(--spacing-sm);
}

.product-card h3 {
  margin: 0 0 var(--spacing-xs) 0;
  color: var(--primary-teal);
}

.product-card .price {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-teal);
  margin: var(--spacing-sm) 0;
}

.product-card .description {
  flex-grow: 1;
  margin-bottom: var(--spacing-sm);
  color: var(--text-light);
}

.product-card .btn {
  width: 100%;
}

.loading {
  text-align: center;
  padding: var(--spacing-md);
}

.error {
  background-color: #fee;
  color: #c33;
  padding: var(--spacing-sm);
  border-radius: 4px;
  margin: var(--spacing-sm) 0;
}

.error ul {
  text-align: left;
  max-width: 500px;
  margin: var(--spacing-sm) auto;
}

/* Success Page Styles */
.success-container {
  max-width: 700px;
}

.success-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-sm);
}

.success-intro {
  font-size: 1.2rem;
}

.success-details {
  background-color: var(--light-bg);
  padding: var(--spacing-md);
  border-radius: 8px;
  margin-bottom: var(--spacing-md);
}

.success-details h3 {
  margin-bottom: var(--spacing-sm);
}

.success-details p {
  margin: var(--spacing-xs) 0;
}

.success-info {
  background-color: var(--light-bg);
  padding: var(--spacing-md);
  border-radius: 8px;
  margin-bottom: var(--spacing-md);
}

.success-info h3 {
  margin-bottom: var(--spacing-sm);
}

.success-info ul {
  text-align: left;
  max-width: 500px;
  margin: 0 auto;
}

.success-info li {
  margin-bottom: var(--spacing-xs);
  color: #4a4a4a;
}

.success-actions {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* Cart and Checkout Sidebar Layouts */
.cart-with-sidebar,
.checkout-with-sidebar {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--spacing-lg);
  align-items: start;
}

.cart-sidebar-image,
.checkout-sidebar-image {
  min-height: 600px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 20px;
}

@media (max-width: 768px) {
  .cart-with-sidebar,
  .checkout-with-sidebar {
    grid-template-columns: 1fr;
  }

  .cart-sidebar-image,
  .checkout-sidebar-image {
    min-height: 300px;
    position: static;
  }
}

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

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

.mb-0 {
  margin-bottom: 0;
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.hidden {
  display: none;
}

/* Cart Notification */
.cart-notification {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--primary-teal);
  color: var(--white);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  z-index: 10000;
  animation: slideIn 0.3s ease;
}

.cart-notification-link {
  color: var(--white);
  text-decoration: underline;
  margin-left: var(--spacing-sm);
}

.cart-notification-hide {
  animation: slideOut 0.3s ease;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOut {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

/* Animations */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 2px solid #fff;
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 0.6s linear infinite;
  margin-right: var(--spacing-xs);
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 40px;
  right: 40px;
  background-color: var(--secondary-teal);
  color: var(--white);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.back-to-top:hover {
  background-color: var(--primary-teal);
  transform: translateY(-4px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

@media (max-width: 768px) {
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
    font-size: 1.3rem;
  }
}