/* ==========================================
   DESIGN SYSTEM & VARIABLES
   ========================================== */
:root {
  /* Dark Theme Variables (Default) */
  --bg-primary: #0a0814;
  --bg-secondary: rgba(18, 14, 38, 0.6);
  --text-primary: #f3f1fe;
  --text-secondary: #a9a3cc;
  --text-muted: #6e679a;
  
  --accent-orange: #feb47b;
  --accent-pink: #f85078;
  --accent-cyan: #00f2fe;
  --accent-purple: #7f00ff;
  
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-hover: rgba(255, 255, 255, 0.2);
  --glass-shadow: rgba(0, 0, 0, 0.4);
  
  --gradient-hero: linear-gradient(135deg, #feb47b 10%, #f85078 50%, #7f00ff 90%);
  --gradient-card-1: linear-gradient(135deg, #ff9966, #ff5e62);
  --gradient-card-2: linear-gradient(135deg, #f85078, #b06ab3);
  --gradient-card-3: linear-gradient(135deg, #00f2fe, #4facfe);
  
  --font-main: 'Outfit', 'Noto Sans KR', sans-serif;
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light Theme Variables Toggle */
.light-theme {
  --bg-primary: #f6f5fb;
  --bg-secondary: rgba(255, 255, 255, 0.6);
  --text-primary: #121020;
  --text-secondary: #5a547a;
  --text-muted: #8e88b3;
  
  --glass-bg: rgba(18, 14, 38, 0.03);
  --glass-border: rgba(18, 14, 38, 0.08);
  --glass-border-hover: rgba(18, 14, 38, 0.2);
  --glass-shadow: rgba(18, 14, 38, 0.08);
  
  --bg-blob-1: rgba(254, 180, 123, 0.15);
  --bg-blob-2: rgba(248, 80, 120, 0.15);
  --bg-blob-3: rgba(0, 242, 254, 0.15);
}

/* ==========================================
   BASE STYLES & RESET
   ========================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  transition: background-color 0.5s ease, color 0.3s ease;
  line-height: 1.6;
}

.page-loader {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: radial-gradient(circle at top, rgba(248, 80, 120, 0.18), transparent 45%), var(--bg-primary);
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-ring {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  border: 3px solid rgba(255,255,255,0.1);
  border-top-color: var(--accent-pink);
  border-right-color: var(--accent-cyan);
  animation: spin 0.9s linear infinite;
  display: grid;
  place-items: center;
  box-shadow: 0 0 32px rgba(248, 80, 120, 0.25);
}

.loader-core {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-orange), var(--accent-pink), var(--accent-cyan));
  box-shadow: 0 0 18px rgba(248, 80, 120, 0.35);
  animation: pulse 1.2s ease-in-out infinite;
}

.loader-text {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.app-container {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.page-loader.hidden ~ .app-container {
  opacity: 1;
  transform: translateY(0);
}

body.mobile-menu-open {
  overflow: hidden;
}

.scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-orange), var(--accent-pink), var(--accent-cyan));
  z-index: 250;
  box-shadow: 0 0 16px rgba(248, 80, 120, 0.35);
}

.scroll-top-btn {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  cursor: pointer;
  z-index: 250;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: var(--transition-smooth);
}

.scroll-top-btn.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.scroll-top-btn:hover {
  background: var(--gradient-hero);
  color: #fff;
  transform: translateY(-4px);
}

@media (max-width: 768px) {
  .scroll-top-btn {
    right: 16px;
    bottom: 16px;
  }
}

/* ==========================================
   DECORATIVE BACKGROUND ELEMENTS
   ========================================== */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  pointer-events: none;
}

.blob {
  position: fixed;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -1;
  opacity: 0.35;
  pointer-events: none;
  animation: floatBlobs 25s infinite alternate ease-in-out;
}

.blob-1 {
  background: radial-gradient(circle, var(--accent-orange), transparent 70%);
  top: -100px;
  left: -100px;
  animation-delay: 0s;
}

.blob-2 {
  background: radial-gradient(circle, var(--accent-pink), transparent 70%);
  bottom: -150px;
  right: -50px;
  animation-delay: 5s;
}

.blob-3 {
  background: radial-gradient(circle, var(--accent-cyan), transparent 70%);
  top: 40%;
  right: -200px;
  animation-delay: 10s;
}

@keyframes floatBlobs {
  0% {
    transform: translate(0, 0) scale(1) rotate(0deg);
  }
  50% {
    transform: translate(50px, 80px) scale(1.1) rotate(180deg);
  }
  100% {
    transform: translate(-30px, -50px) scale(0.9) rotate(360deg);
  }
}

/* ==========================================
   GLASSMORPHISM BASE CLASS
   ========================================== */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 32px 0 var(--glass-shadow);
  transition: var(--transition-smooth);
}

.glass:hover {
  border-color: var(--glass-border-hover);
}

/* ==========================================
   LAYOUT CONTAINER
   ========================================== */
.app-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
}

/* ==========================================
   MAIN HEADER (NAVBAR)
   ========================================== */
.main-header {
  position: fixed;
  top: 24px;
  left: 24px;
  right: 24px;
  max-width: 1152px;
  margin: 0 auto;
  height: 70px;
  border-radius: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 32px;
  z-index: 100;
  transition: height 0.3s ease, top 0.3s ease, padding 0.3s ease, box-shadow 0.3s ease;
}

.main-header.scrolled {
  top: 12px;
  height: 60px;
  padding: 0 24px;
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.2);
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  text-transform: uppercase;
}

.logo-accent {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 8px;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-smooth);
}

.nav-link i {
  width: 18px;
  height: 18px;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
}

.light-theme .nav-link:hover, .light-theme .nav-link.active {
  background: rgba(0, 0, 0, 0.05);
}

.header-controls {
  display: flex;
  gap: 12px;
}

.control-btn {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
}

.control-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}

.control-btn.active {
  color: var(--accent-pink);
  box-shadow: inset 0 0 0 1px rgba(248, 80, 120, 0.3);
}

.music-off-icon {
  display: none;
}

.control-btn.active .music-on-icon {
  display: none;
}

.control-btn.active .music-off-icon {
  display: block;
}

.mobile-menu-toggle {
  display: none;
}

.sun-icon {
  display: none;
}

.light-theme .sun-icon {
  display: block;
}

.light-theme .moon-icon {
  display: none;
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  font-size: 1rem;
  font-weight: 700;
  border-radius: 14px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition-smooth);
}

.btn-primary {
  background: var(--gradient-hero);
  color: #fff;
  box-shadow: 0 4px 20px rgba(248, 80, 120, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(248, 80, 120, 0.5);
}

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

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-3px);
}

.btn-paypal {
  background: linear-gradient(135deg, #0070ba 0%, #003087 100%);
  color: #fff;
  box-shadow: 0 10px 24px rgba(0, 112, 186, 0.25);
}

.btn-paypal:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(0, 112, 186, 0.32);
}

.btn-icon-only {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 12px;
}

/* ==========================================
   HERO SECTION
   ========================================== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 100px;
  position: relative;
}

.spotlight-section {
  padding-top: 20px;
}

.spotlight-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 32px;
  border-radius: 24px;
}

.spotlight-copy {
  max-width: 660px;
}

.spotlight-eyebrow {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-cyan);
}

.spotlight-copy h3 {
  font-size: 1.35rem;
  margin-bottom: 10px;
}

.spotlight-copy p {
  color: var(--text-secondary);
}

.spotlight-actions {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.spotlight-stats {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.stat-pill {
  min-width: 92px;
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  text-align: center;
}

.stat-pill strong {
  display: block;
  font-size: 1.15rem;
  color: var(--accent-pink);
}

.stat-pill span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.hero-content {
  max-width: 800px;
  animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-pink);
  margin-bottom: 24px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -1.5px;
}

.gradient-text {
  background: var(--gradient-hero);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 600px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================
   SECTIONS GENERAL
   ========================================== */
.section-container {
  padding: 100px 0 60px 0;
}

.section-header {
  margin-bottom: 50px;
  max-width: 600px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  letter-spacing: -0.5px;
}

.title-icon {
  color: var(--accent-pink);
  width: 32px;
  height: 32px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

.grid-layout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

/* ==========================================
   CARDS BASE STYLE & TILT
   ========================================== */
.card {
  border-radius: 24px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transform: perspective(1000px);
}

.card-glow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  transition: opacity 0.5s ease;
  opacity: 0;
}

.card:hover .card-glow {
  opacity: 1;
}

.card-header {
  padding: 28px 28px 0 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

.yt-icon-1 {
  background: var(--gradient-card-1);
  box-shadow: 0 4px 15px rgba(255, 94, 98, 0.3);
}

.yt-icon-2 {
  background: var(--gradient-card-2);
  box-shadow: 0 4px 15px rgba(248, 80, 120, 0.3);
}

.yt-icon-3 {
  background: var(--gradient-card-3);
  box-shadow: 0 4px 15px rgba(0, 242, 254, 0.3);
}

.card-badges {
  display: flex;
  gap: 8px;
}

.badge-mini {
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.badge-mini.orange {
  background: rgba(254, 180, 123, 0.12);
  color: var(--accent-orange);
}

.badge-mini.pink {
  background: rgba(248, 80, 120, 0.12);
  color: var(--accent-pink);
}

.badge-mini.cyan {
  background: rgba(0, 242, 254, 0.12);
  color: var(--accent-cyan);
}

.card-body {
  padding: 24px 28px;
  flex-grow: 1;
}

.card-body h3 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.channel-handle {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 16px;
}

.card-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.card-footer {
  padding: 0 28px 28px 28px;
}

.card-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 14px 20px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: var(--transition-smooth);
}

.card-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.light-theme .card-btn {
  background: rgba(0, 0, 0, 0.02);
  border-color: rgba(0, 0, 0, 0.05);
}

.light-theme .card-btn:hover {
  background: rgba(0, 0, 0, 0.05);
  border-color: rgba(0, 0, 0, 0.15);
}

/* ==========================================
   GAME CARDS SPECIFIC
   ========================================== */
.games-grid {
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
}

@media (max-width: 500px) {
  .games-grid {
    grid-template-columns: 1fr;
  }
}

.game-card {
  height: auto;
}

.game-thumbnail {
  height: 230px;
  position: relative;
  overflow: hidden;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 20px;
}

/* 감성적인 카드 배경 (이미지 다운 유실 대비 CSS 백업) */
.watermelon-bg {
  background: linear-gradient(135deg, rgba(239, 83, 80, 0.95), rgba(102, 187, 106, 0.95)), 
              url('https://images.unsplash.com/photo-1587049352846-4a222e784d38?auto=format&fit=crop&q=80&w=600');
  background-size: cover;
  background-position: center;
}

.cherry-bg {
  background: linear-gradient(135deg, rgba(244, 143, 177, 0.95), rgba(240, 98, 146, 0.95)), 
              url('https://images.unsplash.com/photo-1522748906645-95d8adfd52c7?auto=format&fit=crop&q=80&w=600');
  background-size: cover;
  background-position: center;
}

.game-badge {
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.game-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 8, 20, 0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition-smooth);
}

.game-card:hover .game-overlay {
  opacity: 1;
}

.btn-play-now {
  background: var(--gradient-hero);
  color: white;
  box-shadow: 0 4px 15px rgba(248, 80, 120, 0.4);
  transform: translateY(20px);
  transition: var(--transition-smooth);
}

.game-card:hover .btn-play-now {
  transform: translateY(0);
}

.game-tags {
  display: flex;
  gap: 8px;
  margin-top: 14px;
}

.game-tags span {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.03);
  padding: 4px 10px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.light-theme .game-tags span {
  background: rgba(0, 0, 0, 0.02);
  border-color: rgba(0, 0, 0, 0.05);
}

.game-footer {
  display: flex;
  gap: 12px;
}

.btn-outline-play {
  flex-grow: 1;
  border: 1px solid var(--accent-pink);
  color: var(--text-primary);
  background: transparent;
  padding: 12px;
  border-radius: 12px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition-smooth);
}

.btn-outline-play:hover {
  background: var(--gradient-hero);
  color: white;
  border-color: transparent;
  box-shadow: 0 4px 15px rgba(248, 80, 120, 0.3);
}

/* ==========================================
   GUESTBOOK SECTION
   ========================================== */
.guestbook-container {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  align-items: start;
}

@media (max-width: 900px) {
  .guestbook-container {
    grid-template-columns: 1fr;
  }
}

.guestbook-form {
  padding: 32px;
  border-radius: 24px;
}

.form-row {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.input-group label {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.input-group label i {
  width: 16px;
  height: 16px;
}

.input-group input, 
.input-group select, 
.input-group textarea {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  padding: 14px 16px;
  border-radius: 12px;
  font-family: var(--font-main);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition-smooth);
}

.light-theme .input-group input, 
.light-theme .input-group select, 
.light-theme .input-group textarea {
  background: rgba(0, 0, 0, 0.02);
}

.input-group input:focus, 
.input-group select:focus, 
.input-group textarea:focus {
  border-color: var(--accent-pink);
  box-shadow: 0 0 15px rgba(248, 80, 120, 0.25);
  background: rgba(255, 255, 255, 0.06);
}

.input-group textarea {
  min-height: 110px;
  resize: vertical;
}

.btn-submit {
  width: 100%;
}

/* 방명록 리스트 */
.guestbook-list-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-height: 520px;
}

.list-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.list-header h3 {
  font-size: 1.25rem;
  font-weight: 800;
}

.btn-clear {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-clear:hover {
  color: var(--accent-pink);
}

.guestbook-messages {
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow-y: auto;
  padding-right: 10px;
  max-height: 460px;
}

/* 스크롤바 커스터마이징 */
.guestbook-messages::-webkit-scrollbar {
  width: 6px;
}

.guestbook-messages::-webkit-scrollbar-track {
  background: transparent;
}

.guestbook-messages::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
}

.guestbook-messages::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

.no-messages {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  background: rgba(255, 255, 255, 0.01);
  border: 1px dashed var(--glass-border);
  border-radius: 20px;
  text-align: center;
}

.empty-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 12px;
  opacity: 0.6;
}

/* 방명록 카드 */
.message-card {
  padding: 20px;
  border-radius: 16px;
  animation: slideIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

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

.msg-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
}

.msg-user {
  font-weight: 700;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.msg-emoji {
  font-size: 1.1rem;
}

.msg-date {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.msg-content {
  color: var(--text-secondary);
  font-size: 0.9rem;
  word-break: break-all;
}

/* ==========================================
   FOOTER
   ========================================== */
.main-footer {
  margin-top: 100px;
  margin-bottom: 40px;
  border-radius: 24px;
  padding: 40px 48px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand {
  font-size: 1.3rem;
  font-weight: 800;
}

.footer-sns {
  display: flex;
  gap: 16px;
}

.sns-link {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: var(--transition-smooth);
}

.sns-link:hover {
  background: var(--gradient-hero);
  color: #fff;
  border-color: transparent;
  transform: translateY(-3px);
}

.footer-divider {
  border: 0;
  height: 1px;
  background: var(--glass-border);
  margin: 30px 0;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}

.footer-tag {
  font-weight: 700;
  color: var(--accent-pink);
}

/* ==========================================
   IN-GAME PLAY MODAL
   ========================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(6, 4, 12, 0.85);
  backdrop-filter: blur(12px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.modal-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.modal-container {
  width: 90%;
  max-width: 960px;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  transform: scale(0.9);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay:not(.hidden) .modal-container {
  transform: scale(1);
}

.modal-header {
  height: 60px;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--glass-border);
}

.modal-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.modal-actions {
  display: flex;
  gap: 8px;
}

.modal-action-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  width: 36px;
  height: 36px;
  border-radius: 10px;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.modal-action-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.modal-action-btn.close-btn:hover {
  background: var(--accent-pink);
}

.modal-body {
  position: relative;
  background: #000;
}

.iframe-wrapper {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 Aspect Ratio */
}

.iframe-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.iframe-loader {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #0d0b18;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 10;
  transition: opacity 0.5s ease;
}

.iframe-loader.hidden {
  opacity: 0;
  pointer-events: none;
}

.spinner {
  width: 44px;
  height: 44px;
  border: 4px solid rgba(248, 80, 120, 0.15);
  border-top-color: var(--accent-pink);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* ==========================================
   RESPONSIVE NAVIGATION & LAYOUT
   ========================================== */
@media (max-width: 768px) {
  .main-header {
    padding: 0 20px;
    height: 60px;
    top: 12px;
    left: 12px;
    right: 12px;
  }
  
  .main-header.scrolled {
    top: 8px;
    height: 56px;
    padding: 0 16px;
  }
  
  .nav-links {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }
  
  .logo {
    font-size: 1.25rem;
  }

  .spotlight-banner {
    flex-direction: column;
    align-items: flex-start;
    padding: 22px 24px;
  }

  .spotlight-stats {
    width: 100%;
  }

  .stat-pill {
    flex: 1;
    min-width: 0;
  }
  
  .hero-section {
    padding-top: 120px;
    align-items: flex-start;
  }
  
  .hero-title {
    font-size: 2.2rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    gap: 12px;
  }
  
  .hero-buttons .btn {
    width: 100%;
  }
  
  .section-container {
    padding: 60px 0 40px 0;
  }
}

/* ==========================================
   MOBILE MENU & REVEAL ANIMATIONS
   ========================================== */

.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(3, 2, 10, 0.55);
  backdrop-filter: blur(10px);
  z-index: 140;
  opacity: 1;
  transition: opacity 0.25s ease;
}

.mobile-menu-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.mobile-menu-panel {
  position: fixed;
  top: 16px;
  left: 16px;
  right: 16px;
  z-index: 150;
  border-radius: 24px;
  padding: 20px;
  transform: translateY(-12px);
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-smooth);
}

.mobile-menu-panel.is-open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu-panel.hidden {
  transform: translateY(-12px);
  opacity: 0;
  pointer-events: none;
}

.mobile-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 14px;
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 700;
  transition: var(--transition-smooth);
}

.mobile-nav-link:hover {
  background: rgba(255, 255, 255, 0.08);
}

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* 1. Confetti Effects */
.confetti-piece {
  position: fixed;
  width: 10px;
  height: 10px;
  background-color: var(--accent-pink);
  top: -10px;
  z-index: 999;
  pointer-events: none;
  border-radius: 50%;
  animation: confetti-fall 3s linear forwards;
}

@keyframes confetti-fall {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(105vh) rotate(720deg);
    opacity: 0;
  }
}

/* 2. Emoji-specific Neon Glows for Guestbook */
.message-card.msg-peanut {
  border-color: rgba(254, 180, 123, 0.35);
  box-shadow: 0 8px 24px rgba(254, 180, 123, 0.08);
}
.message-card.msg-peanut:hover {
  border-color: rgba(254, 180, 123, 0.6);
  box-shadow: 0 8px 32px rgba(254, 180, 123, 0.15);
}

.message-card.msg-watermelon {
  border-color: rgba(102, 187, 106, 0.35);
  box-shadow: 0 8px 24px rgba(102, 187, 106, 0.08);
}
.message-card.msg-watermelon:hover {
  border-color: rgba(102, 187, 106, 0.6);
  box-shadow: 0 8px 32px rgba(102, 187, 106, 0.15);
}

.message-card.msg-cherry {
  border-color: rgba(248, 80, 120, 0.35);
  box-shadow: 0 8px 24px rgba(248, 80, 120, 0.08);
}
.message-card.msg-cherry:hover {
  border-color: rgba(248, 80, 120, 0.6);
  box-shadow: 0 8px 32px rgba(248, 80, 120, 0.15);
}

.message-card.msg-game {
  border-color: rgba(0, 242, 254, 0.35);
  box-shadow: 0 8px 24px rgba(0, 242, 254, 0.08);
}
.message-card.msg-game:hover {
  border-color: rgba(0, 242, 254, 0.6);
  box-shadow: 0 8px 32px rgba(0, 242, 254, 0.15);
}

.message-card.msg-fire {
  border-color: rgba(255, 94, 98, 0.35);
  box-shadow: 0 8px 24px rgba(255, 94, 98, 0.08);
}
.message-card.msg-fire:hover {
  border-color: rgba(255, 94, 98, 0.6);
  box-shadow: 0 8px 32px rgba(255, 94, 98, 0.15);
}

/* 3. Game Modal Fullscreen Mode */
.modal-overlay.fullscreen-modal .modal-container {
  width: 98vw;
  max-width: 98vw;
  height: 96vh;
  border-radius: 16px;
}

.modal-overlay.fullscreen-modal .iframe-wrapper {
  padding-top: 0;
  height: calc(96vh - 60px);
}

.modal-overlay.fullscreen-modal iframe {
  position: relative;
  width: 100%;
  height: 100%;
}

/* 4. YT & Game Card Micro-interactions */
.youtube-card:hover .card-icon {
  transform: scale(1.1) rotate(5deg);
  transition: var(--transition-smooth);
}

.game-card:hover .game-thumbnail {
  background-position: center;
  transform: scale(1.01);
  transition: var(--transition-smooth);
}

.game-card .game-thumbnail {
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}