/* Global Styles */
:root {
  /* Dark theme with Material Design influence */
  --primary-color: #64b5f6;  /* Material Blue 300 - softer blue */
  --secondary-color: #90caf9; /* Material Blue 200 */
  --accent-color: #ff8a80;    /* Material Red A100 - softer red */
  --background-color: #121212; /* Material Dark theme background */
  --surface-color: #1e1e1e;    /* Slightly lighter than background */
  --surface-color-light: #2d2d2d; /* For cards and elevated surfaces */
  --text-primary: #e0e0e0;     /* Light grey text */
  --text-secondary: #9e9e9e;   /* Darker grey text */
  --border-color: #333333;     /* Subtle borders */
  --box-shadow: 0 2px 4px rgba(0,0,0,0.2), 0 1px 2px rgba(0,0,0,0.15);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius: 8px;
  --header-height: 64px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Poppins', sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--background-color);
  transition: background-color 0.3s ease, color 0.3s ease;
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

p {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

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

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

/* Back Link */
.back-link {
    display: inline-block; /* Allow margin */
    margin: 10px 0 0 10px; /* Add some space */
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
}
.back-link i {
    margin-right: 5px;
}
.back-link:hover {
    color: var(--primary-color);
}


/* Buttons */
.btn {
  display: inline-block;
  padding: 8px 16px;
  background-color: var(--primary-color);
  color: var(--text-primary);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.875rem;
}

.btn:hover {
  background-color: #90caf9;
  box-shadow: 0 2px 4px rgba(0,0,0,0.3);
  transform: translateY(-1px);
}

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

.btn-primary:hover {
  background-color: #1a2530;
  border-color: var(--border-color);
}

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

.btn-accent:hover {
  background-color: #c0392b;
  border-color: var(--border-color);
}

.btn-lg {
  padding: 12px 24px;
  font-size: 1.1rem;
}

/* Header */
.header {
  background-color: var(--surface-color);
  box-shadow: var(--box-shadow);
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  height: var(--header-height);
  border-bottom: 1px solid var(--border-color);
}

.header-container {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex: 1;
  padding: 0 20px;
}

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary-color);
}

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

.nav-links {
  display: flex;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
  text-align: center;
}

.nav-links li {
  margin: 0 15px;
}

.nav-links a {
  color: var(--text-primary);
  font-weight: 500;
  transition: color 0.3s ease;
  padding: 8px 0;
  display: inline-block;
  width: 100%;
  text-align: center;
}

.nav-links a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -5px;
  left: 0;
  background-color: var(--accent-color);
  transition: var(--transition);
}

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

.auth-buttons {
  display: flex;
  align-items: center;
  gap: 12px;
}

.auth-buttons .btn {
  min-width: 100px;
  padding: 8px 16px;
  height: 38px;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
}

.hamburger {
  display: none;
  width: 30px;
  height: 30px;
  padding: 2px;
  cursor: pointer;
  position: relative;
  margin-left: 20px;
}

.hamburger div {
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  margin: 5px auto;
  transition: var(--transition);
  border-radius: 2px;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, rgba(13, 71, 161, 0.85) 0%, rgba(21, 101, 192, 0.75) 100%), url('../images/placeholder.png');
  background-size: cover;
  background-position: center;
  position: relative;
  padding: 80px 0;
  margin-top: var(--header-height);
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  background-color: rgba(18, 18, 18, 0.6);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius);
  padding: 40px;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 20px;
  color: white;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 30px;
  color: rgba(255, 255, 255, 0.9);
}

/* Banner Slider */
.banner-slider {
  margin: 50px 0;
  position: relative;
  overflow: hidden;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  border: 1px solid var(--border-color); /* Enhanced border */
}

.banner {
  display: flex;
  transition: transform 0.5s ease;
}

.banner-slide {
  min-width: 100%;
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: white;
}

.banner-slide:nth-child(1) {
  background: linear-gradient(135deg, rgba(13, 71, 161, 0.8) 0%, rgba(25, 118, 210, 0.7) 100%);
}

.banner-slide:nth-child(2) {
  background: linear-gradient(135deg, rgba(21, 101, 192, 0.8) 0%, rgba(30, 136, 229, 0.7) 100%);
}

.banner-slide h2 {
  font-size: 2rem;
  margin-bottom: 15px;
  color: white;
}

.banner-slide p {
  font-size: 1.1rem;
  margin-bottom: 20px;
}

.banner-indicators {
  display: flex;
  justify-content: center;
  margin-top: 20px;
}

.indicator {
  width: 12px;
  height: 12px;
  background-color: rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  margin: 0 5px;
  cursor: pointer;
  transition: var(--transition);
}

.indicator.active {
  background-color: white;
}

/* Featured Rewards */
.featured-rewards {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.section-header p {
  color: #666;
  max-width: 700px;
  margin: 0 auto;
}

.rewards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 30px;
}

.reward-card {
  background-color: var(--surface-color-light);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  border: 1px solid var(--border-color); /* Enhanced border */
}

.reward-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.reward-img {
  height: 200px;
  overflow: hidden;
}

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

.reward-card:hover .reward-img img {
  transform: scale(1.05);
}

.reward-content {
  padding: 20px;
}

.reward-content h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.reward-content p {
  color: #666;
  margin-bottom: 15px;
}

.points-required {
  font-weight: 700;
  color: var(--accent-color);
  margin-bottom: 15px;
  display: block;
}

/* Dashboard Widget */
.dashboard-widget {
  background-color: var(--surface-color-light);
  border-radius: var(--border-radius);
  padding: 30px;
  margin: 50px 0;
  box-shadow: var(--box-shadow);
  border: 1px solid var(--border-color); /* Enhanced border */
}

.widget-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.widget-header h3 {
  margin-bottom: 0;
}

.points-balance {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent-color);
}

.progress-container {
  margin-bottom: 20px;
}

.progress-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
}

.progress-bar {
  height: 10px;
  background-color: var(--surface-color);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  border-radius: 4px;
  width: 65%;
}

.milestone-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.milestone-info p {
  margin-bottom: 0;
  font-size: 0.9rem;
  color: #666;
}

/* Footer */
.footer {
  background-color: var(--surface-color);
  color: var(--text-primary);
  padding: 60px 0 30px;
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-column h3 {
  color: var(--text-primary);
  margin-bottom: 20px;
  font-size: 1.3rem;
}

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

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--text-secondary);
}

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

.social-links {
  display: flex;
  gap: 15px;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  color: var(--text-primary);
  transition: var(--transition);
}

.social-links a:hover {
  background-color: var(--secondary-color);
  transform: translateY(-3px);
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 0;
}

/* Points History Page */
.page-header {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  padding: 60px 0;
  text-align: center;
}

.page-header h1 {
  color: white;
  font-size: 2.5rem;
}

.page-header p {
  color: rgba(255, 255, 255, 0.9);
  max-width: 700px;
  margin: 0 auto;
}

.filter-bar {
  background-color: var(--surface-color-light);
  padding: 20px;
  border-radius: var(--border-radius);
  margin: 30px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  align-items: center;
  border: 1px solid var(--border-color); /* Enhanced border */
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.filter-group label {
  font-weight: 500;
  color: #555;
}

.filter-bar select,
.filter-bar input[type="text"] {
  padding: 8px 12px;
  border: 1px solid #ccc;
  border-radius: var(--border-radius);
  min-width: 150px;
}

.search-bar {
  position: relative;
  margin-left: auto; /* Push search to the right */
}

.search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: #aaa;
}

.search-bar input[type="text"] {
  padding-left: 35px;
}

/* Transactions Table */
.transactions-table {
  width: 100%;
  border-collapse: collapse;
  margin: 30px 0;
  border: 1px solid var(--border-color); /* Enhanced border */
  border-spacing: 0;
}

.transactions-table th,
.transactions-table td {
  padding: 12px 15px;
  text-align: left;
  border: 1px solid var(--border-color); /* Enhanced border for cells */
}

.transactions-table th {
  background-color: var(--surface-color);
  font-weight: 600;
  color: var(--text-primary);
}

.transaction-category {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 500;
}

.category-shopping { background-color: #e3f2fd; color: #1565c0; }
.category-dining { background-color: #fff3e0; color: #ef6c00; }
.category-travel { background-color: #e8f5e9; color: #2e7d32; }
.category-other { background-color: #f3e5f5; color: #6a1b9a; }

.points-earned {
  font-weight: 600;
  color: var(--success-color);
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 40px 0;
}

.pagination button {
  background-color: white;
  border: 1px solid #ddd;
  color: var(--primary-color);
  padding: 8px 15px;
  margin: 0 3px;
  cursor: pointer;
  transition: var(--transition);
  border-radius: var(--border-radius);
}

.pagination button:hover {
  background-color: #f0f0f0;
}

.pagination button.active {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.pagination button i {
  font-size: 0.8rem;
}

/* Redemption History Page */
.redemption-cards {
  margin: 30px 0;
}

.redemption-card {
  background-color: var(--surface-color-light);
  border-radius: var(--border-radius);
  margin-bottom: 20px;
  display: flex;
  gap: 20px;
  padding: 20px;
  box-shadow: var(--box-shadow);
  border: 1px solid var(--border-color); /* Enhanced border */
}

.redemption-img {
  width: 100px;
  height: 100px;
  flex-shrink: 0;
  border-radius: var(--border-radius);
  overflow: hidden;
}

.redemption-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.redemption-details {
  flex-grow: 1;
}

.redemption-details h3 {
  font-size: 1.2rem;
  margin-bottom: 5px;
}

.redemption-meta {
  font-size: 0.9rem;
  color: #666;
  margin-bottom: 10px;
}

.redemption-meta span {
  margin-right: 15px;
}

.points-used {
  font-weight: 600;
  color: var(--accent-color);
}

.redemption-details p {
  margin-bottom: 15px;
  font-size: 0.95rem;
}

.redemption-status {
  display: inline-block;
  padding: 5px 10px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.status-completed { background-color: rgba(76, 175, 80, 0.15); color: #81c784; } /* Material Green */
.status-processing { background-color: rgba(255, 152, 0, 0.15); color: #ffb74d; } /* Material Orange */
.status-shipped { background-color: rgba(33, 150, 243, 0.15); color: #64b5f6; } /* Material Blue */

/* Redemption Catalog Page */
.catalog-filters {
  background-color: var(--surface-color-light);
  padding: 20px; /* Reduced padding */
  border-radius: var(--border-radius);
  margin: 30px 0;
  box-shadow: var(--box-shadow);
  border: 1px solid var(--border-color); /* Enhanced border */
}

.filter-section {
  margin-bottom: 20px;
}

.filter-section h3 {
  font-size: 1.1rem;
  margin-bottom: 15px;
}

.filter-options {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filter-option {
  padding: 8px 15px;
  background-color: var(--surface-color);
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.filter-option:hover, .filter-option.active {
  background-color: var(--primary-color);
  color: var(--text-primary);
}

.range-slider {
  width: 100%;
  margin: 10px 0;
}

.range-values {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  color: #666;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 30px;
  margin: 30px 0;
}

.catalog-item {
  background-color: var(--surface-color-light);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow);
  border: 1px solid var(--border-color); /* Enhanced border */
  display: flex;
  flex-direction: column;
}

.catalog-img {
  height: 200px;
  overflow: hidden;
}

.catalog-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.catalog-content {
  padding: 20px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.catalog-content h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.catalog-content p {
  color: #666;
  margin-bottom: 15px;
  flex-grow: 1; /* Push meta/button down */
}

.catalog-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
  font-size: 0.9rem;
}

.catalog-category {
  background-color: #eee;
  padding: 3px 8px;
  border-radius: 12px;
  color: #555;
}

.catalog-points {
  font-weight: 700;
  color: var(--accent-color);
}

/* Hide theme toggle */
.theme-switch-wrapper {
    display: none;
}

/* Responsive */
@media (max-width: 768px) {
  .header {
    height: auto;
  }

  .header-container {
    height: auto;
    padding: 12px 20px;
  }

  .navbar {
    padding: 0;
    flex-wrap: wrap;
  }

  .nav-links {
    display: none;
    width: 100%;
    padding: 10px 0;
    flex-direction: column;
    background-color: var(--surface-color);
    position: absolute;
    top: 100%;
    left: 0;
    box-shadow: var(--box-shadow);
    text-align: center;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links li {
    margin: 8px 0;
    width: 100%;
    text-align: center;
  }

  .nav-links a {
    padding: 12px 16px;
    display: block;
    width: 100%;
    text-align: center;
  }

  .auth-buttons {
    margin-right: 50px;
  }

  .hamburger {
    display: block;
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
  }

  .navbar {
    flex-wrap: wrap;
  }
  .nav-links {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    align-items: center;
    margin-top: 20px;
  }
  .nav-links.active {
    display: flex;
  }
  .nav-links li {
    margin: 10px 0;
  }
  .hamburger {
    display: block;
  }
  .hamburger.active .line1 { transform: rotate(-45deg) translate(-5px, 6px); }
  .hamburger.active .line2 { opacity: 0; }
  .hamburger.active .line3 { transform: rotate(45deg) translate(-5px, -6px); }

  .auth-buttons {
      margin-left: auto; /* Push buttons right */
  }

  .theme-switch-wrapper {
      order: -1; /* Move theme toggle before buttons on mobile */
      margin-left: 0;
      margin-right: 15px;
  }

  .filter-bar {
      flex-direction: column;
      align-items: stretch;
  }
  .search-bar {
      margin-left: 0;
      width: 100%;
  }
  .transactions-table.responsive {
      display: block;
      width: 100%;
      overflow-x: auto;
  }
  .redemption-card {
      flex-direction: column;
      align-items: center;
      text-align: center;
  }
  .redemption-img {
      margin-bottom: 15px;
  }

  /* Header & Navigation */
  .header-container {
    flex-direction: column;
    padding: 10px 0;
  }

  .back-link {
    margin: 15px 0 10px 0;
    align-self: flex-start;
  }

  .navbar {
    width: 100%;
    padding: 10px 0;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--surface-color);
    padding: 10px 0;
    box-shadow: var(--box-shadow);
    border-top: 1px solid var(--border-color);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links li {
    margin: 10px 0;
    width: 100%;
    text-align: center;
  }

  .nav-links a {
    display: block;
    padding: 10px;
  }

  .auth-buttons {
    margin-left: 0;
    padding: 10px 0;
    width: 100%;
    justify-content: center;
  }

  .auth-buttons .btn {
    flex: 1;
    max-width: 150px; /* Prevent buttons from getting too wide */
  }

  .hamburger {
    display: block;
    position: absolute;
    right: 20px;
    top: 20%;
    transform: translateY(-50%);
  }

  /* Hero Section */
  .hero {
    padding: 60px 0;
  }

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

  .hero p {
    font-size: 1rem;
  }

  /* Banner Slider */
  .banner-slide {
    padding: 30px 20px;
  }

  .banner-slide h2 {
    font-size: 1.5rem;
  }

  /* Featured Rewards */
  .section-header h2 {
    font-size: 2rem;
  }

  .rewards-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 0 10px;
  }

  .reward-card {
    max-width: 400px;
    margin: 0 auto;
  }
}

/* Small Mobile Devices */
@media (max-width: 480px) {
  .header-container {
    padding: 10px 15px;
  }

  .auth-buttons {
    margin-right: 40px;
  }
  
  .auth-buttons .btn {
    min-width: 80px;
    padding: 6px 12px;
    font-size: 0.9rem;
  }

  .container {
    padding: 0 15px;
  }

  .auth-buttons {
    flex-direction: column;
    gap: 10px;
  }

  .auth-buttons .btn {
    width: 100%;
    max-width: none;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .banner-slide h2 {
    font-size: 1.25rem;
  }

  .section-header h2 {
    font-size: 1.75rem;
  }
}