/* SerenaMall Platform - Minimalist Light Design System */
/* Clean Minimal Aesthetic with Soft Blue/Slate Primary, Gentle Teal Accent */

/* Design System Tokens */
:root {
  --primary-blue: #4a90e2;
  --primary-slate: #5b7c99;
  --accent-teal: #5bb3b8;
  --accent-mint: #7fd4c1;
  --accent-coral: #e8a5a5;
  --bg-surface: #fafbfc;
  --bg-elevated: #ffffff;
  --bg-card: #ffffff;
  --bg-subtle: #f5f7fa;
  --text-primary: #1a2332;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --text-light: #a0aec0;
  --border-subtle: #e2e8f0;
  --border-medium: #cbd5e0;
  --shadow-soft: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-medium: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-strong: 0 8px 24px rgba(0, 0, 0, 0.12);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --spacing-xs: 0.75rem;
  --spacing-sm: 1.25rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --spacing-2xl: 5.5rem;
}

/* Import Fonts */
@import url('https://fonts.googleapis.com/css2?family=Work+Sans:wght@400;500;600;700&family=Manrope:wght@300;400;500;600;700&display=swap');

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  line-height: 1.65;
  color: var(--text-primary);
  background: var(--bg-surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Work Sans', sans-serif;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 600;
}

h3 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 600;
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
  font-size: 1.0625rem;
  line-height: 1.75;
  font-weight: 400;
}

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

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

/* Layout Container */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

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

.section-wrapper-tight {
  padding: var(--spacing-lg) 0;
}

/* Top Navigation */
.top-navigation-bar {
  background: rgba(250, 251, 252, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  padding: var(--spacing-sm) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-soft);
}

.top-navigation-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-logo-wrapper {
  display: flex;
  align-items: center;
}

.brand-logo-text {
  font-family: 'Work Sans', sans-serif;
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.brand-logo-text:hover {
  opacity: 0.75;
}

.brand-logo-wrapper img {
  display: none;
}

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

.main-menu-list a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9375rem;
  transition: all var(--transition-fast);
  padding: var(--spacing-xs) 0;
  position: relative;
  font-family: 'Manrope', sans-serif;
}

.main-menu-list a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-blue);
  transition: width var(--transition-base);
}

.main-menu-list a:hover::after {
  width: 100%;
}

.main-menu-list a:hover {
  color: var(--text-primary);
  text-decoration: none;
}

/* Mobile Menu Toggle */
.menu-toggle-btn {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 26px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.menu-line {
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: all var(--transition-base);
  transform-origin: center;
}

.menu-toggle-btn.active .menu-line:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

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

.menu-toggle-btn.active .menu-line:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Intro Section */
.intro-section {
  background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
  padding: var(--spacing-2xl) 0;
  color: var(--text-primary);
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border-subtle);
}

.intro-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 30%, rgba(74, 144, 226, 0.04) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(91, 179, 184, 0.03) 0%, transparent 50%);
  opacity: 1;
}

.intro-content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.intro-content-grid.no-image {
  grid-template-columns: 1fr;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.intro-text-block {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.intro-heading {
  font-size: clamp(2.25rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 0;
  letter-spacing: -0.03em;
}

.intro-description {
  font-size: 1.1875rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 0;
  max-width: 550px;
  font-weight: 400;
}

.intro-content-grid.no-image .intro-description {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.intro-image-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-medium);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
}

.intro-image {
  width: 100%;
  height: 480px;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-base);
}

.intro-image-wrapper:hover .intro-image {
  transform: scale(1.01);
}

/* Button Styles */
.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--primary-blue);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9375rem;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  box-shadow: var(--shadow-soft);
  letter-spacing: 0.01em;
  align-self: flex-start;
  transform: translateZ(0);
  font-family: 'Manrope', sans-serif;
}

.cta-button:hover {
  transform: translateY(-1px) translateZ(0);
  box-shadow: var(--shadow-medium);
  background: var(--primary-slate);
  color: white;
  text-decoration: none;
}

.cta-button-outline {
  background: transparent;
  border: 1.5px solid var(--primary-blue);
  color: var(--primary-blue);
  box-shadow: none;
}

.cta-button-outline:hover {
  background: var(--primary-blue);
  color: white;
  box-shadow: var(--shadow-soft);
}

/* Reward Cards Grid */
.rewards-grid {
  display: grid;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.rewards-grid-auto {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.reward-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-base);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  transform: translateZ(0);
  position: relative;
}

.reward-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary-blue);
  transform: scaleX(0);
  transition: transform var(--transition-base);
  transform-origin: left;
}

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

.reward-card:hover {
  transform: translateY(-4px) translateZ(0);
  box-shadow: var(--shadow-medium);
  border-color: var(--border-medium);
}

.reward-image-container {
  position: relative;
  height: 180px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-teal) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-base);
}

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

.reward-card:hover .reward-image-container {
  background: linear-gradient(135deg, var(--primary-slate) 0%, var(--accent-mint) 100%);
}

.reward-card:hover .reward-image-container img {
  transform: scale(1.03);
}

.reward-badge {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  background: var(--accent-coral);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  z-index: 2;
  box-shadow: var(--shadow-soft);
  font-family: 'Manrope', sans-serif;
}

.reward-details {
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.reward-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  font-family: 'Work Sans', sans-serif;
}

.reward-description {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-sm);
  flex-grow: 1;
  font-size: 0.9375rem;
}

.reward-date {
  display: inline-flex;
  background: var(--bg-subtle);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--primary-blue);
  margin-top: auto;
  font-family: 'Manrope', sans-serif;
}

/* Icon Classes with Font Awesome */
.reward-image-container.icon-house::before,
.reward-image-container.icon-vehicle::before,
.reward-image-container.icon-travel::before,
.reward-image-container.icon-cash::before,
.reward-image-container.icon-education::before,
.reward-image-container.icon-fitness::before,
.reward-image-container.icon-trophy::before,
.reward-image-container.icon-shield::before,
.reward-image-container.icon-globe::before,
.reward-image-container.icon-star::before,
.reward-image-container.icon-gift::before {
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  z-index: 1;
  transition: opacity var(--transition-base), transform var(--transition-base);
  font-size: 3.5rem;
  opacity: 0.12;
  color: rgba(255, 255, 255, 0.95);
}

.reward-image-container.icon-house::before { content: '\f1ad'; }
.reward-image-container.icon-vehicle::before { content: '\f5b4'; }
.reward-image-container.icon-travel::before { content: '\f5a9'; }
.reward-image-container.icon-cash::before { content: '\f53a'; }
.reward-image-container.icon-education::before { content: '\f19d'; }
.reward-image-container.icon-fitness::before { content: '\f44b'; }
.reward-image-container.icon-trophy::before { content: '\f091'; }
.reward-image-container.icon-shield::before { content: '\f3ed'; }
.reward-image-container.icon-globe::before { content: '\f57c'; }
.reward-image-container.icon-star::before { content: '\f522'; }
.reward-image-container.icon-gift::before { content: '\f06b'; }

.reward-card:hover .reward-image-container::before {
  opacity: 0.18;
  transform: scale(1.05);
}

.reward-image-container.has-photo::before {
  display: none;
}

/* Winners Display */
.winners-section {
  background: var(--bg-subtle);
}

.winners-table-wrapper {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  margin-top: var(--spacing-lg);
}

.winners-table {
  width: 100%;
  border-collapse: collapse;
}

.winners-table thead {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-slate) 100%);
}

.winners-table th {
  padding: var(--spacing-md);
  text-align: left;
  font-weight: 600;
  color: white;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-family: 'Manrope', sans-serif;
}

.winners-table td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

.winners-table tbody tr:last-child td {
  border-bottom: none;
}

.winners-table tbody tr:hover {
  background: var(--bg-subtle);
}

/* Forms */
.form-field-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.9375rem;
  font-family: 'Manrope', sans-serif;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-family: 'Manrope', sans-serif;
  font-size: 1rem;
  transition: all var(--transition-fast);
  background: var(--bg-card);
  color: var(--text-primary);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 150px;
  line-height: 1.75;
}

.form-error {
  color: var(--accent-coral);
  font-size: 0.875rem;
  margin-top: var(--spacing-xs);
  display: none;
  font-family: 'Manrope', sans-serif;
}

/* Filters */
.filter-controls {
  margin-bottom: var(--spacing-xl);
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  justify-content: center;
}

.filter-select {
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  font-family: 'Manrope', sans-serif;
  font-size: 0.9375rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-primary);
}

.filter-select:focus {
  outline: none;
  border-color: var(--primary-blue);
}

/* Legal Section */
.legal-section {
  background: var(--bg-subtle);
  color: var(--text-primary);
  padding: var(--spacing-xl) 0;
  border-top: 1px solid var(--border-subtle);
}

.legal-content-wrapper {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.legal-heading {
  font-size: 1.625rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  font-family: 'Work Sans', sans-serif;
}

.legal-text {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
  font-size: 1rem;
}

/* Footer */
.page-footer {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border-subtle);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.page-footer .container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing-xl);
}

.footer-column h4 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  font-size: 1.0625rem;
  font-weight: 600;
  font-family: 'Work Sans', sans-serif;
}

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

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

.footer-menu a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  font-size: 0.9375rem;
}

.footer-menu a:hover {
  color: var(--primary-blue);
  text-decoration: none;
}

.footer-bottom {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-subtle);
  text-align: center;
  background: var(--bg-surface);
  color: var(--text-muted);
  font-size: 0.8125rem;
  line-height: 1.85;
  padding: var(--spacing-md);
}

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

.section-heading {
  text-align: center;
  font-size: clamp(1.875rem, 5vw, 3rem);
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
  font-family: 'Work Sans', sans-serif;
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }

.fade-in-up {
  animation: fadeInUp 0.5s ease-out forwards;
  opacity: 0;
  transform: translateZ(0);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px) translateZ(0);
  }
  to {
    opacity: 1;
    transform: translateY(0) translateZ(0);
  }
}

/* Responsive */
@media (max-width: 1024px) {
  .top-navigation-bar .container {
    position: relative;
  }

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

  .main-menu-list {
    position: fixed;
    top: 0;
    left: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-card);
    box-shadow: var(--shadow-strong);
    transition: left var(--transition-base);
    z-index: 999;
    padding-top: 85px;
    border-right: 1px solid var(--border-subtle);
    flex-direction: column;
    align-items: flex-start;
    padding-left: var(--spacing-lg);
    gap: 0;
  }

  .main-menu-list.active {
    left: 0;
  }

  .main-menu-list li {
    width: 100%;
    border-bottom: 1px solid var(--border-subtle);
  }

  .main-menu-list li:last-child {
    border-bottom: none;
  }

  .main-menu-list a {
    display: block;
    padding: var(--spacing-md) 0;
    font-size: 1.0625rem;
    font-weight: 500;
  }

  .intro-content-grid {
    grid-template-columns: 1fr;
  }

  .intro-image {
    height: 380px;
  }
  
  .intro-text-block {
    margin-bottom: var(--spacing-lg);
  }

  .rewards-grid-auto {
    grid-template-columns: 1fr;
  }

  .page-footer .container {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-sm);
  }

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

  .intro-image {
    height: 300px;
  }
  
  .intro-text-block {
    margin-bottom: var(--spacing-md);
  }

  .cta-button {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.9375rem;
  }

  .winners-table-wrapper {
    overflow-x: auto;
  }

  .winners-table {
    min-width: 600px;
  }

  .winners-table th,
  .winners-table td {
    padding: var(--spacing-sm);
  }

  .filter-controls {
    flex-direction: column;
    align-items: stretch;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.cta-button:focus,
.form-input:focus,
.form-textarea:focus,
.filter-select:focus {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}

/* Print */
@media print {
  .top-navigation-bar,
  .page-footer,
  .cta-button,
  .main-menu-list,
  .menu-toggle-btn {
    display: none !important;
  }

  body {
    background: white !important;
    color: black !important;
  }

  .reward-card,
  .winners-table-wrapper {
    box-shadow: none !important;
    border: 1px solid #000 !important;
  }
}