/* ========================================
   CHRISTMAS THEME 2024 
   Festive styling for 120mAGL Christmas Advent Calendar
   Active: December 8, 2024 - January 6, 2025
   ======================================== */

:root {
  /* Christmas Color Palette */
  --christmas-red: #c41e3a;
  --christmas-green: #165b33;
  --christmas-gold: #d4af37;
  --christmas-white: #f8f9fa;
  --christmas-dark-red: #8b0000;
  --christmas-light-green: #2d5016;
  --christmas-snow: #ffffff;
  
  /* Gradient overrides */
  --brand-gradient-christmas: linear-gradient(135deg, #c41e3a, #165b33);
  --accent-gradient-christmas: linear-gradient(90deg, #d4af37, #ffd700);
}

/* Apply Christmas theme only when enabled */
body.christmas-theme {
  position: relative;
}

/* Snow Effect Overlay - Using Unicode Snowflakes */
body.christmas-theme::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  background-image: 
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Ctext x='20' y='30' font-family='Arial, sans-serif' font-size='20' fill='white' opacity='0.7'%3E%E2%9D%84%3C/text%3E%3Ctext x='80' y='80' font-family='Arial, sans-serif' font-size='16' fill='white' opacity='0.5'%3E%E2%9D%84%3C/text%3E%3Ctext x='150' y='50' font-family='Arial, sans-serif' font-size='22' fill='white' opacity='0.6'%3E%E2%9D%84%3C/text%3E%3Ctext x='220' y='90' font-family='Arial, sans-serif' font-size='18' fill='white' opacity='0.7'%3E%E2%9D%84%3C/text%3E%3Ctext x='50' y='150' font-family='Arial, sans-serif' font-size='20' fill='white' opacity='0.5'%3E%E2%9D%84%3C/text%3E%3Ctext x='180' y='180' font-family='Arial, sans-serif' font-size='16' fill='white' opacity='0.6'%3E%E2%9D%84%3C/text%3E%3Ctext x='120' y='220' font-family='Arial, sans-serif' font-size='24' fill='white' opacity='0.7'%3E%E2%9D%84%3C/text%3E%3Ctext x='260' y='150' font-family='Arial, sans-serif' font-size='18' fill='white' opacity='0.5'%3E%E2%9D%84%3C/text%3E%3C/svg%3E");
  animation: snowfall 20s linear infinite;
  opacity: 0.35;
}

@keyframes snowfall {
  0% {
    transform: translateY(-100%);
  }
  100% {
    transform: translateY(100%);
  }
}

/* Disable snow on mobile for performance */
@media (max-width: 768px) {
  body.christmas-theme::before {
    display: none;
  }
}

/* Christmas Navbar */
body.christmas-theme .app-nav {
  background: linear-gradient(90deg, rgba(196, 30, 58, 0.95), rgba(22, 91, 51, 0.95)) !important;
  border-bottom: 3px solid var(--christmas-gold);
}

body.christmas-theme .navbar-brand,
body.christmas-theme .nav-link {
  color: var(--christmas-white) !important;
}

body.christmas-theme .brand-title,
body.christmas-theme .brand-title-sm {
  background: var(--accent-gradient-christmas);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 700;
}

body.christmas-theme .nav-link:hover,
body.christmas-theme .nav-link.active {
  color: var(--christmas-gold) !important;
}

body.christmas-theme .nav-link.active .link-text:after,
body.christmas-theme .nav-link:hover .link-text:after {
  background: var(--accent-gradient-christmas) !important;
}

/* Christmas Hamburger Menu Icon - Override for visibility on festive gradient background */
body.christmas-theme .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%23ffffff' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2.5' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E") !important;
}

body.christmas-theme .navbar-toggler {
  border-color: rgba(255, 255, 255, 0.3);
}

body.christmas-theme .navbar-toggler:focus {
  box-shadow: 0 0 0 0.15rem rgba(255, 255, 255, 0.4);
}

/* Christmas Mobile Menu Link - Font Awesome Icon Styling */
body.christmas-theme .nav-item.d-lg-none .nav-link {
  color: var(--christmas-white) !important;
  transition: all 0.3s ease;
  border-radius: 0.5rem;
  padding: 0.5rem 1rem;
}

body.christmas-theme .nav-item.d-lg-none .nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--christmas-gold) !important;
}

/* Font Awesome tree icon animation - mobile menu */
body.christmas-theme .nav-item.d-lg-none .nav-link .fa-tree {
  color: var(--christmas-green);
  font-size: 1.25rem;
  animation: tree-sway 3s ease-in-out infinite;
  display: inline-block;
  text-shadow: 0 0 8px rgba(22, 91, 51, 0.5);
}

body.christmas-theme .nav-item.d-lg-none .nav-link:hover .fa-tree {
  color: var(--christmas-gold);
  text-shadow: 0 0 12px rgba(212, 175, 55, 0.7);
}

@keyframes tree-sway {
  0%, 100% {
    transform: rotate(0deg);
  }
  25% {
    transform: rotate(-3deg);
  }
  75% {
    transform: rotate(3deg);
  }
}

/* Mobile menu link text styling */
body.christmas-theme .nav-item.d-lg-none .nav-link .link-text {
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--christmas-white) !important;
}

body.christmas-theme .nav-item.d-lg-none .nav-link:hover .link-text {
  color: var(--christmas-gold) !important;
}

/* Christmas Banner - Desktop Only */
.christmas-banner {
  background: linear-gradient(90deg, var(--christmas-red), var(--christmas-green));
  border-bottom: 3px solid var(--christmas-gold);
  padding: 0.75rem 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  position: relative;
  overflow: hidden;
}

.christmas-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  animation: banner-shimmer 3s ease-in-out infinite;
}

@keyframes banner-shimmer {
  0%, 100% {
    transform: translateX(-100%);
  }
  50% {
    transform: translateX(100%);
  }
}

.christmas-banner-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  text-decoration: none;
  color: var(--christmas-white);
  position: relative;
  z-index: 1;
  transition: all 0.3s ease;
}

.christmas-banner-link:hover {
  color: var(--christmas-gold);
  transform: scale(1.02);
}

.christmas-banner-icon {
  font-size: 2rem;
  display: inline-block;
  animation: banner-tree-bounce 2s ease-in-out infinite;
}

@keyframes banner-tree-bounce {
  0%, 100% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-5px) scale(1.1);
  }
}

.christmas-banner-text {
  font-weight: 700;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.christmas-banner-arrow {
  font-size: 1.25rem;
  animation: arrow-pulse 1.5s ease-in-out infinite;
}

@keyframes arrow-pulse {
  0%, 100% {
    transform: translateX(0);
    opacity: 1;
  }
  50% {
    transform: translateX(5px);
    opacity: 0.7;
  }
}

/* Christmas Buttons */
body.christmas-theme .btn-primary {
  background: var(--brand-gradient-christmas);
  border: none;
  box-shadow: 0 4px 10px rgba(196, 30, 58, 0.3);
}

body.christmas-theme .btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 6px 15px rgba(196, 30, 58, 0.4);
}

body.christmas-theme .btn-outline-primary {
  border-color: var(--christmas-red);
  color: var(--christmas-red);
}

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

/* Christmas Cards */
body.christmas-theme .card {
  border: 2px solid var(--christmas-gold);
  box-shadow: 0 4px 12px rgba(212, 175, 55, 0.15);
}

body.christmas-theme .card-header {
  background: var(--brand-gradient-christmas);
  color: white;
  border-bottom: 2px solid var(--christmas-gold);
}

/* Christmas Footer */
body.christmas-theme .app-footer {
  background: linear-gradient(to right, rgba(196, 30, 58, 0.1), rgba(22, 91, 51, 0.1));
  border-top: 3px solid var(--christmas-gold);
}

/* Christmas Badges */
body.christmas-theme .badge-primary {
  background: var(--christmas-red);
}

body.christmas-theme .badge-success {
  background: var(--christmas-green);
}

/* Christmas Icons - add ornament decorations */
body.christmas-theme h1::before,
body.christmas-theme h2::before {
  margin-right: 0.5rem;
}

body.christmas-theme .page-header-title::before {
  content: '';
  margin-right: 0.5rem;
}

/* ========================================
   ADVENT CALENDAR SPECIFIC STYLES
   ======================================== */

/* Advent Calendar Grid */
.advent-calendar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.5rem;
  padding: 2rem 0;
}

@media (max-width: 768px) {
  .advent-calendar-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
}

/* Advent Challenge Card */
.advent-challenge-card {
  position: relative;
  border-radius: 1rem;
  overflow: hidden;
  transition: all 0.3s ease;
  cursor: pointer;
  border: 3px solid var(--christmas-gold);
  background: white;
}

.advent-challenge-card.locked {
  opacity: 0.6;
  cursor: not-allowed;
  border-color: #ccc;
  background: #f5f5f5;
}

.advent-challenge-card.completed {
  border-color: var(--christmas-green);
  box-shadow: 0 0 20px rgba(22, 91, 51, 0.3);
}

.advent-challenge-card.today {
  border-color: var(--christmas-red);
  animation: pulse-border 2s infinite;
  box-shadow: 0 0 30px rgba(196, 30, 58, 0.5);
}

@keyframes pulse-border {
  0%, 100% {
    box-shadow: 0 0 20px rgba(196, 30, 58, 0.5);
  }
  50% {
    box-shadow: 0 0 40px rgba(196, 30, 58, 0.8);
  }
}

.advent-challenge-card:not(.locked):hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
}

/* Challenge Day Number */
.challenge-day-number {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 50px;
  height: 50px;
  background: var(--christmas-red);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  z-index: 10;
}

.advent-challenge-card.completed .challenge-day-number {
  background: var(--christmas-green);
}

.advent-challenge-card.locked .challenge-day-number {
  background: #999;
}

/* Challenge Image */
.advent-challenge-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  filter: brightness(0.9);
}

.advent-challenge-card.locked .advent-challenge-image {
  filter: grayscale(100%) brightness(0.7);
}

/* Challenge Content */
.advent-challenge-content {
  padding: 1.5rem 1rem;
  background: white;
}

.advent-challenge-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--christmas-red);
  margin-bottom: 0.5rem;
}

.advent-challenge-description {
  font-size: 0.9rem;
  color: #666;
  margin-bottom: 1rem;
  line-height: 1.4;
}

/* Challenge Status Badge */
.challenge-status-badge {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  border-radius: 2rem;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.challenge-status-badge.completed {
  background: var(--christmas-green);
  color: white;
}

.challenge-status-badge.today {
  background: var(--christmas-red);
  color: white;
  animation: pulse-badge 1.5s infinite;
}

.challenge-status-badge.locked {
  background: #ccc;
  color: #666;
}

.challenge-status-badge.unlocked {
  background: var(--christmas-gold);
  color: #333;
}

@keyframes pulse-badge {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

/* Points Display */
.challenge-points {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--christmas-gold);
  font-weight: 600;
  font-size: 1rem;
}

.challenge-points i {
  font-size: 1.2rem;
}

/* Progress Section */
.advent-progress-section {
  background: linear-gradient(135deg, #fff5f5, #f0fff4);
  border: 3px solid var(--christmas-gold);
  border-radius: 1rem;
  padding: 2rem;
  margin-bottom: 2rem;
}

.progress-bar-christmas {
  height: 30px;
  background: var(--brand-gradient-christmas);
  border-radius: 2rem;
  position: relative;
  overflow: hidden;
}

.progress-bar-christmas::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

/* Leaderboard Section */
.advent-leaderboard {
  background: white;
  border: 3px solid var(--christmas-gold);
  border-radius: 1rem;
  padding: 2rem;
}

.leaderboard-entry {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  border-bottom: 1px solid #eee;
  transition: background 0.2s ease;
}

.leaderboard-entry:hover {
  background: #f9f9f9;
}

.leaderboard-rank {
  width: 40px;
  height: 40px;
  background: var(--christmas-gold);
  color: #333;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
}

.leaderboard-entry:first-child .leaderboard-rank {
  background: linear-gradient(135deg, #ffd700, #ffed4e);
  box-shadow: 0 4px 12px rgba(255, 215, 0, 0.5);
}

.leaderboard-entry:nth-child(2) .leaderboard-rank {
  background: linear-gradient(135deg, #c0c0c0, #e8e8e8);
}

.leaderboard-entry:nth-child(3) .leaderboard-rank {
  background: linear-gradient(135deg, #cd7f32, #e49b5b);
}

/* Dark Theme Adjustments */
[data-theme="dark"] body.christmas-theme .advent-challenge-card {
  background: #1b2631;
  border-color: var(--christmas-gold);
}

[data-theme="dark"] body.christmas-theme .advent-challenge-content {
  background: #1b2631;
}

[data-theme="dark"] body.christmas-theme .advent-challenge-title {
  color: #ff6b8a;
}

[data-theme="dark"] body.christmas-theme .advent-challenge-description {
  color: #d5dce3;
}

[data-theme="dark"] body.christmas-theme .advent-progress-section {
  background: linear-gradient(135deg, #2d1a1f, #1a2d24);
}

[data-theme="dark"] body.christmas-theme .advent-leaderboard {
  background: #1b2631;
}

[data-theme="dark"] body.christmas-theme .leaderboard-entry {
  border-color: #2f4254;
}

[data-theme="dark"] body.christmas-theme .leaderboard-entry:hover {
  background: #223244;
}

/* Christmas Greeting Banner */
.christmas-greeting {
  background: var(--brand-gradient-christmas);
  color: white;
  padding: 1.5rem;
  border-radius: 1rem;
  text-align: center;
  margin-bottom: 2rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  position: relative;
  overflow: hidden;
}

.christmas-greeting::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 3rem;
  opacity: 0.3;
}

.christmas-greeting::after {
  content: '';
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 3rem;
  opacity: 0.3;
}

.christmas-greeting h2 {
  margin: 0;
  font-size: 2rem;
  font-weight: 700;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.christmas-greeting h2::before {
  content: '';
  margin: 0;
}

/* Unlock Animation */
@keyframes unlock-celebrate {
  0%, 100% {
    transform: scale(1) rotate(0deg);
  }
  25% {
    transform: scale(1.1) rotate(-5deg);
  }
  75% {
    transform: scale(1.1) rotate(5deg);
  }
}

.advent-challenge-card.just-unlocked {
  animation: unlock-celebrate 0.6s ease;
}

/* Mobile Responsive */
@media (max-width: 576px) {
  .christmas-greeting h2 {
    font-size: 1.5rem;
  }
  
  .christmas-greeting::before,
  .christmas-greeting::after {
    font-size: 2rem;
  }
  
  .advent-challenge-image {
    height: 140px;
  }
  
  .challenge-day-number {
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
  }
}