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

:root {
  --bg-primary: #1c1e22;
  --bg-card: #24262b;
  --bg-sector-win: #1a3328;
  --bg-sector-lose: #2a2d32;
  --green-accent: #1dbe70;
  --green-glow: rgba(29, 190, 112, 0.4);
  --green-glow-soft: rgba(29, 190, 112, 0.2);
  --gold: #ffb800;
  --gold-dark: #e6a600;
  --text-primary: #ffffff;
  --text-secondary: #a0a5b1;
  --border-color: #3a3d42;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ==================== Header ==================== */
.site-header {
  text-align: center;
  padding: 40px 20px 20px;
  position: relative;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.logo-icon {
  width: 32px;
  height: 32px;
  object-fit: contain;
  filter: drop-shadow(0 0 8px var(--green-glow));
}

.logo-text {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 4px;
  color: var(--text-primary);
}

.page-title {
  font-size: clamp(32px, 6vw, 56px);
  font-weight: 800;
  letter-spacing: 2px;
  background: linear-gradient(135deg, var(--green-accent), #00e676, var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.page-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  font-weight: 400;
}

/* ==================== Wheel Section ==================== */
.wheel-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 30px 20px 50px;
}

.wheel-outer-ring {
  position: relative;
  padding: 16px;
  border-radius: 50%;
  background: radial-gradient(circle, transparent 60%, rgba(29, 190, 112, 0.05) 100%);
  box-shadow: 0 0 40px var(--green-glow-soft), inset 0 0 30px rgba(0, 0, 0, 0.3);
}

.wheel-container {
  position: relative;
  width: 400px;
  height: 400px;
}

#wheelCanvas {
  width: 400px;
  height: 400px;
  border-radius: 50%;
  transition: transform 6s cubic-bezier(0.15, 0.9, 0.15, 1);
}

/* Pointer */
.wheel-pointer {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  filter: drop-shadow(0 2px 8px rgba(255, 184, 0, 0.5));
}

/* Center */
.wheel-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--green-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px var(--green-glow-soft);
  z-index: 5;
}

.wheel-center span {
  font-size: 11px;
  font-weight: 800;
  color: var(--green-accent);
  letter-spacing: 1px;
}

/* Spin Button */
.spin-btn {
  margin-top: 32px;
  position: relative;
  padding: 16px 56px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--bg-primary);
  background: linear-gradient(135deg, var(--green-accent), #00e676);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 0 20px var(--green-glow), 0 4px 15px rgba(0, 0, 0, 0.3);
  overflow: hidden;
}

.spin-btn:hover:not(:disabled) {
  transform: scale(1.05);
  box-shadow: 0 0 30px var(--green-glow), 0 6px 20px rgba(0, 0, 0, 0.4);
}

.spin-btn:active:not(:disabled) {
  transform: scale(0.98);
}

.spin-btn.disabled,
.spin-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
  background: #3a3d42;
  color: var(--text-secondary);
}

.btn-glow {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 60%);
  animation: btnGlow 2s ease-in-out infinite;
}

@keyframes btnGlow {
  0%, 100% { opacity: 0.5; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1); }
}

/* Cooldown */
.cooldown-text {
  margin-top: 16px;
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
  display: none;
}

/* ==================== Carousel Section ==================== */
.carousel-section {
  padding: 20px 0;
  overflow: hidden;
  position: relative;
  max-width: 100%;
}

.carousel-track {
  display: flex;
  gap: 20px;
  animation: carouselScroll 20s linear infinite;
  width: max-content;
}

.carousel-item {
  flex-shrink: 0;
  width: 512px;
  height: 82px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.carousel-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@keyframes carouselScroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

/* ==================== Prizes Section ==================== */
.prizes-section {
  padding: 40px 20px;
  max-width: 800px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--text-primary);
  margin-bottom: 24px;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--green-accent);
  margin: 10px auto 0;
  border-radius: 2px;
}

.prize-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.prize-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.prize-card:hover {
  transform: translateY(-2px);
  border-color: var(--green-accent);
}

.prize-card.prize-special {
  border-color: var(--gold);
  background: linear-gradient(135deg, var(--bg-card), rgba(255, 184, 0, 0.05));
}

.prize-card.prize-special:hover {
  border-color: var(--gold);
  box-shadow: 0 4px 24px rgba(255, 184, 0, 0.15);
}

.prize-icon {
  font-size: 32px;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(29, 190, 112, 0.1);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.prize-special .prize-icon {
  background: rgba(255, 184, 0, 0.1);
}

.prize-info h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--green-accent);
  margin-bottom: 4px;
}

.prize-special .prize-info h3 {
  color: var(--gold);
}

.prize-info p {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ==================== Register Section ==================== */
.register-section {
  padding: 40px 20px 60px;
  max-width: 480px;
  margin: 0 auto;
}

.register-desc {
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 24px;
}

.register-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
}

.form-group input {
  padding: 14px 16px;
  font-size: 15px;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus {
  border-color: var(--green-accent);
  box-shadow: 0 0 0 3px var(--green-glow-soft);
}

.form-group input::placeholder {
  color: #5a5e66;
}

.submit-btn {
  padding: 16px;
  font-size: 16px;
  font-weight: 700;
  font-family: inherit;
  letter-spacing: 1px;
  color: var(--bg-primary);
  background: linear-gradient(135deg, var(--green-accent), #00e676);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 0 15px var(--green-glow);
  margin-top: 8px;
}

.submit-btn:hover {
  transform: scale(1.02);
  box-shadow: 0 0 25px var(--green-glow);
}

.form-success {
  text-align: center;
  padding: 40px 20px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--green-accent);
}

.success-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(29, 190, 112, 0.15);
  color: var(--green-accent);
  font-size: 28px;
  margin-bottom: 16px;
}

.form-success p {
  color: var(--text-secondary);
  font-size: 15px;
}

.goto-official-btn {
  display: inline-block;
  margin-top: 20px;
  padding: 14px 36px;
  font-size: 15px;
  font-weight: 700;
  font-family: inherit;
  color: var(--bg-primary);
  background: linear-gradient(135deg, var(--gold), #ffcc33);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 0 15px rgba(255, 184, 0, 0.3);
}

.goto-official-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 0 25px rgba(255, 184, 0, 0.4);
}

/* ==================== Footer ==================== */
.site-footer {
  text-align: center;
  padding: 30px 20px;
  border-top: 1px solid var(--border-color);
}

.site-footer p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.footer-link {
  font-size: 14px;
  color: var(--green-accent);
  text-decoration: none;
  font-weight: 600;
  transition: opacity 0.2s ease;
}

.footer-link:hover {
  opacity: 0.8;
}

/* ==================== Modals ==================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.3s ease;
  padding: 20px;
}

.modal-overlay.active {
  opacity: 1;
}

.modal-content {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  max-width: 400px;
  width: 100%;
  text-align: center;
  position: relative;
  transform: scale(0.9);
  transition: transform 0.3s ease-out;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  overflow: hidden;
}

.modal-overlay.active .modal-content {
  transform: scale(1);
}

.modal-win {
  border: 1px solid var(--green-accent);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 30px var(--green-glow-soft);
}

.modal-lose {
  border: 1px solid var(--border-color);
}

.modal-title {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.win-title {
  background: linear-gradient(135deg, var(--green-accent), var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.lose-title {
  color: var(--text-secondary);
}

.modal-prize-icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.modal-prize-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--green-accent);
  margin-bottom: 24px;
}

.modal-lose-text {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.6;
}

/* Redeem Code Box */
.redeem-code-box {
  background: var(--bg-primary);
  border: 1px dashed var(--green-accent);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-bottom: 20px;
}

.redeem-label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.redeem-code {
  font-size: 22px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 2px;
  font-family: 'Courier New', monospace;
}

/* Modal Buttons */
.copy-btn {
  display: block;
  width: 100%;
  padding: 14px;
  font-size: 15px;
  font-weight: 700;
  font-family: inherit;
  color: var(--bg-primary);
  background: linear-gradient(135deg, var(--green-accent), #00e676);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  margin-bottom: 12px;
  transition: transform 0.2s ease;
}

.copy-btn:hover {
  transform: scale(1.02);
}

.goto-btn {
  display: block;
  width: 100%;
  padding: 14px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  color: var(--gold);
  background: transparent;
  border: 1px solid var(--gold);
  border-radius: var(--radius-sm);
  text-align: center;
  margin-bottom: 12px;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.goto-btn:hover {
  background: rgba(255, 184, 0, 0.1);
  transform: scale(1.02);
}

.modal-close-btn {
  display: block;
  width: 100%;
  padding: 12px;
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.modal-close-btn:hover {
  border-color: var(--text-secondary);
}

/* Confetti */
.confetti-piece {
  position: absolute;
  width: 8px;
  height: 8px;
  top: -10px;
  border-radius: 2px;
  animation: confettiFall 1.5s ease-out forwards;
}

@keyframes confettiFall {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(300px) rotate(720deg);
    opacity: 0;
  }
}

/* ==================== Toast ==================== */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--bg-card);
  color: var(--text-primary);
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--green-accent);
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  z-index: 2000;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.toast.active {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ==================== Responsive ==================== */
@media (max-width: 480px) {
  .wheel-container {
    width: 320px;
    height: 320px;
  }

  #wheelCanvas {
    width: 320px;
    height: 320px;
  }

  .wheel-outer-ring {
    padding: 12px;
  }

  .spin-btn {
    padding: 14px 44px;
    font-size: 16px;
  }

  .prize-grid {
    grid-template-columns: 1fr;
  }

  .page-title {
    font-size: 32px;
  }

  .modal-content {
    padding: 32px 24px;
  }
}

@media (min-width: 481px) and (max-width: 768px) {
  .wheel-container {
    width: 380px;
    height: 380px;
  }

  #wheelCanvas {
    width: 380px;
    height: 380px;
  }
}