/* 
 * Umbreon, Sylveon & Cinnamoroll Couple Challenges Styling
 * Full Design System supporting Dual Harmony, Umbreon Night, and Sylveon Cloud Themes
 */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800&family=Quicksand:wght@500;600;700&display=swap');

:root {
  --font-main: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Quicksand', sans-serif;

  /* Theme Palette - Dual Harmony (Default) */
  --bg-gradient: linear-gradient(135deg, #0e0b20 0%, #1a1638 35%, #311c47 65%, #4a2840 100%);
  --text-main: #f8fafc;
  --text-muted: #cbd5e1;
  
  --umbreon-gold: #fbbf24;
  --umbreon-gold-glow: rgba(251, 191, 36, 0.4);
  --umbreon-purple: #9333ea;
  --umbreon-cyan: #22d3ee;

  --sylveon-pink: #f472b6;
  --sylveon-pink-glow: rgba(244, 114, 182, 0.4);
  --sylveon-cyan: #38bdf8;
  --sylveon-cream: #fff5f8;

  --cinnamoroll-blue: #7dd3fc;
  --cinnamoroll-cloud: rgba(255, 255, 255, 0.95);
  
  --card-glass: rgba(30, 27, 58, 0.75);
  --card-border: rgba(255, 255, 255, 0.15);
  --card-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.4);
  --hero-bg: rgba(26, 22, 52, 0.8);
  --toolbar-bg: rgba(30, 27, 58, 0.75);
  --input-bg: rgba(0, 0, 0, 0.3);
  --modal-bg: linear-gradient(135deg, #0e0b20 0%, #311c47 100%);
  
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;

  --transition-smooth: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Theme Options 1: Umbreon Night (Deep Moonlight Dark Mode) */
body.theme-umbreon {
  --bg-gradient: radial-gradient(circle at 50% 20%, #181436 0%, #080614 100%);
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;

  --umbreon-gold: #f59e0b;
  --umbreon-gold-glow: rgba(245, 158, 11, 0.5);
  --sylveon-pink: #e879f9;
  --sylveon-pink-glow: rgba(232, 121, 249, 0.4);
  
  --card-glass: rgba(18, 15, 38, 0.88);
  --card-border: rgba(251, 191, 36, 0.3);
  --card-shadow: 0 10px 35px -5px rgba(0, 0, 0, 0.7);
  --hero-bg: rgba(18, 14, 38, 0.9);
  --toolbar-bg: rgba(18, 14, 38, 0.88);
  --input-bg: rgba(0, 0, 0, 0.4);
  --modal-bg: linear-gradient(135deg, #14102c 0%, #090714 100%);
}

/* Theme Options 2: Sylveon Cloud (Soft Fairy Light Pastel Mode) */
body.theme-sylveon {
  --bg-gradient: linear-gradient(135deg, #fff0f5 0%, #fce7f3 40%, #e0f2fe 100%);
  --text-main: #1e293b;
  --text-muted: #475569;

  --umbreon-gold: #d97706;
  --umbreon-gold-glow: rgba(217, 119, 6, 0.25);
  --sylveon-pink: #db2777;
  --sylveon-pink-glow: rgba(219, 39, 119, 0.3);
  
  --card-glass: rgba(255, 255, 255, 0.88);
  --card-border: rgba(219, 39, 119, 0.25);
  --card-shadow: 0 10px 30px -5px rgba(219, 39, 119, 0.15);
  --hero-bg: rgba(255, 255, 255, 0.9);
  --toolbar-bg: rgba(255, 255, 255, 0.88);
  --input-bg: rgba(241, 245, 249, 0.95);
  --modal-bg: linear-gradient(135deg, #ffffff 0%, #fce7f3 100%);
}

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

body {
  font-family: var(--font-main);
  background: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  transition: background 0.4s ease, color 0.4s ease;
}

/* Background Animated Particles/Clouds */
.bg-decorations {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.floating-cloud {
  position: absolute;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 50px;
  filter: blur(8px);
  animation: floatCloud 25s linear infinite;
}

body.theme-sylveon .floating-cloud {
  background: rgba(255, 255, 255, 0.4);
}

.cloud-1 { top: 10%; width: 250px; height: 80px; left: -250px; animation-duration: 35s; }
.cloud-2 { top: 40%; width: 320px; height: 100px; left: -320px; animation-duration: 45s; animation-delay: 5s; }
.cloud-3 { top: 75%; width: 200px; height: 70px; left: -200px; animation-duration: 28s; animation-delay: 12s; }

@keyframes floatCloud {
  0% { transform: translateX(0); }
  100% { transform: translateX(calc(100vw + 350px)); }
}

.star-twinkle {
  position: absolute;
  width: 3px;
  height: 3px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 0 8px #fff;
  animation: twinkle 3s ease-in-out infinite alternate;
}

body.theme-sylveon .star-twinkle {
  background: #ec4899;
  box-shadow: 0 0 8px #ec4899;
}

@keyframes twinkle {
  0% { opacity: 0.2; transform: scale(0.8); }
  100% { opacity: 1; transform: scale(1.4); }
}

/* Main Layout Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 80px 20px;
  position: relative;
  z-index: 1;
}

/* Header & Banner Section */
header.hero-banner {
  background: var(--hero-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 32px;
  box-shadow: var(--card-shadow);
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 32px;
  align-items: center;
  position: relative;
  overflow: hidden;
  transition: var(--transition-smooth);
}

header.hero-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(circle, var(--sylveon-pink-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content h1 {
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--sylveon-pink) 0%, var(--umbreon-gold) 50%, var(--sylveon-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero-content p.subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}

/* Anniversary Countdown Timer */
.countdown-box {
  display: inline-flex;
  gap: 12px;
  background: var(--input-bg);
  padding: 12px 20px;
  border-radius: 50px;
  border: 1px solid var(--card-border);
}

.timer-unit {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 45px;
}

.timer-val {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--umbreon-gold);
}

.timer-lbl {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  opacity: 0.8;
  color: var(--text-muted);
}

/* Hero Artwork Preview */
.hero-art-container {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  border: 2px solid var(--card-border);
  transform: rotate(1deg);
  transition: var(--transition-smooth);
}

.hero-art-container:hover {
  transform: rotate(0deg) scale(1.02);
}

.hero-art-container img {
  width: 100%;
  height: 210px;
  object-fit: cover;
  display: block;
}

.hero-art-badge {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(6px);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Control & Navigation Toolbar */
.toolbar-panel {
  background: var(--toolbar-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--card-shadow);
  transition: var(--transition-smooth);
}

.filter-tabs {
  display: flex;
  flex-direction: column;
  gap: 14px;
  width: 100%;
}

.filter-group-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.filter-label {
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  min-width: 95px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.filter-label.creator-label {
  color: var(--umbreon-gold);
}

.filter-label.category-label {
  color: var(--sylveon-pink);
}

.tab-btn {
  background: var(--input-bg);
  border: 1px solid var(--card-border);
  color: var(--text-main);
  padding: 8px 16px;
  border-radius: 30px;
  font-family: var(--font-main);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.tab-btn:hover {
  transform: translateY(-2px);
  border-color: var(--sylveon-pink);
}

.tab-btn.active {
  background: linear-gradient(135deg, var(--sylveon-pink) 0%, var(--umbreon-purple) 100%);
  color: #fff;
  box-shadow: 0 4px 15px var(--sylveon-pink-glow);
  border-color: transparent;
}

.action-tools {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.tool-btn {
  background: var(--input-bg);
  border: 1px solid var(--card-border);
  color: var(--text-main);
  padding: 9px 16px;
  border-radius: 30px;
  font-family: var(--font-main);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.tool-btn:hover {
  transform: translateY(-2px);
  border-color: var(--sylveon-pink);
}

.tool-btn.primary {
  background: linear-gradient(135deg, var(--umbreon-gold) 0%, #f59e0b 100%);
  color: #0f172a;
  border: none;
  font-weight: 700;
  box-shadow: 0 4px 12px var(--umbreon-gold-glow);
}

/* Progress & Milestone Bar */
.progress-card {
  background: var(--card-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 32px;
  box-shadow: var(--card-shadow);
  transition: var(--transition-smooth);
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.progress-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-main);
}

.progress-count {
  font-weight: 700;
  color: var(--umbreon-gold);
}

.progress-bar-bg {
  width: 100%;
  height: 16px;
  background: var(--input-bg);
  border-radius: 10px;
  overflow: hidden;
  position: relative;
  border: 1px solid var(--card-border);
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--sylveon-cyan) 0%, var(--sylveon-pink) 50%, var(--umbreon-gold) 100%);
  border-radius: 10px;
  transition: width 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 0 12px var(--sylveon-pink-glow);
}

.milestones-row {
  display: flex;
  justify-content: space-between;
  margin-top: 14px;
  position: relative;
}

.milestone-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.milestone-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--input-bg);
  border: 2px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  margin-bottom: 4px;
  transition: var(--transition-smooth);
}

.milestone-badge.reached .milestone-icon {
  background: var(--umbreon-gold);
  color: #000;
  border-color: #fff;
  box-shadow: 0 0 15px var(--umbreon-gold-glow);
  transform: scale(1.15);
}

.milestone-badge.claimed .milestone-icon {
  background: var(--sylveon-pink);
  color: #fff;
  border-color: #fff;
  box-shadow: 0 0 15px var(--sylveon-pink-glow);
}

.milestone-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* Grid of Challenge Cards */
.challenges-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

/* Challenge Card Component */
.challenge-card {
  perspective: 1000px;
  min-height: 360px;
  height: 100%;
  position: relative;
}

.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 360px;
  transition: transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  transform-style: preserve-3d;
}

/* Flip animation states */
.challenge-card.unlocked .card-inner {
  transform: rotateY(0deg);
}

.challenge-card.locked .card-inner {
  transform: rotateY(180deg);
}

/* Front & Back Faces */
.card-front, .card-back {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  overflow: hidden;
}

/* Card Front (facing 0deg) */
.card-front {
  background: var(--card-glass);
  transform: rotateY(0deg);
  z-index: 2;
  color: var(--text-main);
}

/* Card Back (facing 180deg) */
.card-back {
  background: linear-gradient(145deg, rgba(20, 16, 42, 0.95), rgba(40, 25, 60, 0.95));
  transform: rotateY(180deg);
  z-index: 1;
  align-items: center;
  justify-content: center;
  text-align: center;
  cursor: pointer;
  border: 2px dashed var(--umbreon-gold);
  position: absolute;
  overflow: hidden;
}

/* Opacity & Pointer Events Fallback for Perfect Rendering Across Browsers */
.challenge-card.locked .card-front {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease 0.15s;
}

.challenge-card.locked .card-back {
  opacity: 1;
  pointer-events: auto;
  transition: opacity 0.3s ease 0.15s;
}

.challenge-card.unlocked .card-front {
  opacity: 1;
  pointer-events: auto;
  transition: opacity 0.3s ease 0.15s;
}

.challenge-card.unlocked .card-back {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease 0.15s;
}

.card-back::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.1) 0%, transparent 60%);
  animation: rotateGlow 15s linear infinite;
}

@keyframes rotateGlow {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.card-back:hover {
  border-color: var(--umbreon-gold);
  transform: rotateY(180deg) scale(1.02);
  box-shadow: 0 12px 35px var(--umbreon-gold-glow);
}

.mystery-seal-img {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--umbreon-gold);
  box-shadow: 0 0 20px var(--umbreon-gold-glow);
  margin-bottom: 16px;
  transition: var(--transition-smooth);
}

.card-back:hover .mystery-seal-img {
  transform: scale(1.1) rotate(5deg);
}

.mystery-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--umbreon-gold);
  margin-bottom: 6px;
}

.mystery-hint {
  font-size: 0.85rem;
  color: #cbd5e1;
  font-style: italic;
  margin-bottom: 16px;
  max-width: 85%;
}

.unlock-badge-btn {
  background: linear-gradient(135deg, var(--sylveon-pink) 0%, var(--umbreon-purple) 100%);
  color: #fff;
  padding: 8px 18px;
  border-radius: 20px;
  font-weight: 700;
  font-size: 0.85rem;
  border: none;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  pointer-events: none;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.category-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.cat-moonlit { background: rgba(147, 51, 234, 0.25); color: #c084fc; border: 1px solid rgba(147, 51, 234, 0.4); }
.cat-cloud { background: rgba(56, 189, 248, 0.25); color: #7dd3fc; border: 1px solid rgba(56, 189, 248, 0.4); }
.cat-fairy { background: rgba(244, 114, 182, 0.25); color: #f472b6; border: 1px solid rgba(244, 114, 182, 0.4); }
.cat-spells { background: rgba(251, 191, 36, 0.25); color: #fbbf24; border: 1px solid rgba(251, 191, 36, 0.4); }

.card-icon {
  font-size: 2rem;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 8px;
  color: var(--text-main);
}

.card-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin-bottom: 12px;
  flex-grow: 1;
}

/* Reward Box inside Unlocked Card */
.reward-box {
  background: rgba(251, 191, 36, 0.12);
  border: 1px dashed var(--umbreon-gold);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-bottom: 14px;
  font-size: 0.82rem;
  color: var(--umbreon-gold);
  font-weight: 600;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.4;
}

.view-voucher-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, rgba(251, 191, 36, 0.2) 0%, rgba(147, 51, 234, 0.25) 100%);
  color: var(--umbreon-gold);
  border: 1px solid var(--umbreon-gold);
  padding: 6px 14px;
  border-radius: 20px;
  font-family: var(--font-main);
  font-weight: 700;
  font-size: 0.82rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  margin-top: 6px;
  width: fit-content;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.view-voucher-btn:hover {
  background: linear-gradient(135deg, rgba(251, 191, 36, 0.35) 0%, rgba(244, 114, 182, 0.35) 100%);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 14px var(--umbreon-gold-glow);
  border-color: #ffe066;
}

.view-voucher-btn:active {
  transform: translateY(0);
}

.reward-voucher-img {
  max-width: 100%;
  max-height: 130px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--umbreon-gold);
  box-shadow: 0 4px 12px var(--umbreon-gold-glow);
  cursor: pointer;
  transition: transform 0.25s ease;
  object-fit: cover;
}

.reward-voucher-img:hover {
  transform: scale(1.04);
}

/* Card Actions */
.card-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.complete-btn {
  flex-grow: 1;
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #fff;
  border: none;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-family: var(--font-main);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.complete-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.memory-btn {
  background: var(--input-bg);
  border: 1px solid var(--card-border);
  color: var(--text-main);
  padding: 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.memory-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Completed Card Styling */
.challenge-card.completed .card-front {
  border-color: #10b981;
  background: linear-gradient(145deg, rgba(16, 185, 129, 0.15), var(--card-glass));
}

.completed-tag {
  background: rgba(16, 185, 129, 0.25);
  color: #34d399;
  border: 1px solid #10b981;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: 20px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  box-shadow: 0 0 12px rgba(16, 185, 129, 0.35);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.completed-stamp {
  position: absolute;
  top: 15px;
  right: 15px;
  background: rgba(16, 185, 129, 0.25);
  border: 2px solid #10b981;
  color: #10b981;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 20px;
  transform: rotate(5deg);
}

/* Card Creator Visual Differentiation */
.challenge-card.creator-card-umbreon .card-front {
  border: 2px solid rgba(147, 51, 234, 0.45);
  box-shadow: 0 10px 30px -5px rgba(147, 51, 234, 0.3);
}

.challenge-card.creator-card-umbreon.unlocked .card-front::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 70px;
  height: 70px;
  background: radial-gradient(circle at top right, rgba(147, 51, 234, 0.25), transparent 70%);
  pointer-events: none;
}

.challenge-card.creator-card-sylveon .card-front {
  border: 2px solid rgba(244, 114, 182, 0.45);
  box-shadow: 0 10px 30px -5px rgba(244, 114, 182, 0.3);
}

.challenge-card.creator-card-sylveon.unlocked .card-front::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 70px;
  height: 70px;
  background: radial-gradient(circle at top right, rgba(244, 114, 182, 0.25), transparent 70%);
  pointer-events: none;
}

.challenge-card.creator-card-shared .card-front {
  border: 2px solid rgba(251, 191, 36, 0.45);
  box-shadow: 0 10px 30px -5px rgba(251, 191, 36, 0.3);
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: var(--modal-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 550px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.6);
  position: relative;
  color: var(--text-main);
  transform: translateY(20px);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-overlay.active .modal-card {
  transform: translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--input-bg);
  border: 1px solid var(--card-border);
  color: var(--text-main);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-weight: 700;
}

.modal-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 20px;
  color: var(--sylveon-pink);
}

/* Custom Form Styles inside Modal */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-muted);
}

.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 12px 16px;
  background: var(--input-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: var(--font-main);
  font-size: 0.95rem;
  outline: none;
}

.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--sylveon-pink);
  box-shadow: 0 0 10px var(--sylveon-pink-glow);
}

/* Quick Interactive Emoji Picker Grid */
.emoji-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 6px;
}

@media (max-width: 480px) {
  .emoji-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

.emoji-grid span {
  font-size: 1.4rem;
  padding: 6px;
  background: var(--input-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-smooth);
  user-select: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

.emoji-grid span:hover {
  transform: scale(1.3);
  background: rgba(255, 255, 255, 0.25);
  border-color: var(--sylveon-pink);
  box-shadow: 0 0 12px var(--sylveon-pink-glow);
  z-index: 2;
}

/* Polaroid Memory Scrapbook View */
.polaroid-card {
  background: #fff;
  color: #1e293b;
  padding: 16px 16px 24px 16px;
  border-radius: 8px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
  transform: rotate(-1deg);
  margin-top: 15px;
}

.polaroid-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 4px;
  background: #f1f5f9;
  margin-bottom: 12px;
}

.polaroid-caption {
  font-family: 'Quicksand', cursive, sans-serif;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  color: #334155;
}

/* Responsive Media Queries */
@media (max-width: 850px) {
  header.hero-banner {
    grid-template-columns: 1fr;
  }
  .hero-art-container {
    display: none;
  }
  .hero-content h1 {
    font-size: 2rem;
  }
}

@media (max-width: 600px) {
  .container {
    padding: 16px 12px 60px 12px;
  }
  .toolbar-panel {
    flex-direction: column;
    align-items: stretch;
  }
  .action-tools {
    justify-content: space-between;
  }
  .challenges-grid {
    grid-template-columns: 1fr;
  }
}