/* TikTok Coins Professional Styling */
:root {
  --tiktok-primary: #fe2c55;
  --tiktok-secondary: #25f4ee;
  --tiktok-dark: #161823;
  --tiktok-light: #f8f9fa;
  --gradient-primary: linear-gradient(135deg, #fe2c55 0%, #ff6b6b 100%);
  --gradient-secondary: linear-gradient(135deg, #25f4ee 0%, #4ecdc4 100%);
  --shadow-light: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-medium: 0 8px 25px rgba(0, 0, 0, 0.1);
  --shadow-heavy: 0 15px 35px rgba(0, 0, 0, 0.15);
}

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, #161823 0%, #2c2f36 100%);
  color: white;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="%23ffffff" opacity="0.05"/><circle cx="75" cy="75" r="1" fill="%23ffffff" opacity="0.05"/><circle cx="50" cy="10" r="1" fill="%23ffffff" opacity="0.03"/><circle cx="10" cy="60" r="1" fill="%23ffffff" opacity="0.03"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.hero-features {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
}

.feature-item i {
  color: var(--tiktok-secondary);
  font-size: 1.2rem;
}

/* Video Section */
.hero-video {
  position: relative;
  z-index: 2;
}

.video-container {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.video-title {
  color: white;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.video-wrapper {
  position: relative;
  width: 100%;
  height: 0;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  border-radius: 15px;
  overflow: hidden;
  box-shadow: var(--shadow-heavy);
}

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

.video-description {
  margin-top: 1rem;
  opacity: 0.8;
  font-size: 0.9rem;
}

/* Main Content */
.main-content {
  padding: 80px 0;
  background: var(--tiktok-light);
}

.section-header {
  margin-bottom: 4rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--tiktok-dark);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.1rem;
  color: #6c757d;
}

/* Price Cards */
.price-card {
  background: white;
  border-radius: 20px;
  box-shadow: var(--shadow-light);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  height: 100%;
}

.price-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-heavy);
}

.price-card.popular {
  border: 2px solid var(--tiktok-primary);
  transform: scale(1.05);
}

.price-card.popular:hover {
  transform: scale(1.05) translateY(-10px);
}

.popular-badge {
  position: absolute;
  top: 20px;
  right: -30px;
  background: var(--gradient-primary);
  color: white;
  padding: 8px 40px;
  font-size: 0.8rem;
  font-weight: 600;
  transform: rotate(45deg);
  z-index: 10;
}

.card-header {
  background: var(--gradient-primary);
  color: white;
  padding: 2rem;
  text-align: center;
  position: relative;
}

.coin-amount {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.coin-amount i {
  margin-right: 0.5rem;
}

.coin-label {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 1rem;
}

/* Xóa .bonus-badge styling */

.card-body {
  padding: 2rem;
  text-align: center;
}

.price {
  margin-bottom: 2rem;
}

.currency {
  font-size: 1.5rem;
  color: #6c757d;
  vertical-align: top;
}

.amount {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--tiktok-dark);
}

.features {
  margin-bottom: 2rem;
  text-align: left;
}

.feature {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
}

.feature i {
  color: var(--tiktok-secondary);
  font-size: 1rem;
}

.btn-purchase {
  background: var(--gradient-primary);
  color: white;
  border: none;
  padding: 1rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  width: 100%;
  transition: all 0.3s ease;
  cursor: pointer;
}

.btn-purchase:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(254, 44, 85, 0.3);
}

/* Info Section */
.info-section {
  margin-top: 5rem;
}

.info-card {
  background: white;
  border-radius: 20px;
  padding: 2rem;
  box-shadow: var(--shadow-light);
  height: 100%;
}

.info-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid #f8f9fa;
}

.info-header i {
  font-size: 2rem;
  color: var(--tiktok-primary);
}

.info-header h4 {
  margin: 0;
  color: var(--tiktok-dark);
  font-weight: 600;
}

.step {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
}

.step-number {
  background: var(--gradient-primary);
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  flex-shrink: 0;
}

.step-content h5 {
  margin-bottom: 0.5rem;
  color: var(--tiktok-dark);
  font-weight: 600;
}

.step-content p {
  margin: 0;
  color: #6c757d;
  font-size: 0.9rem;
}

.commitment {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.commitment i {
  color: var(--tiktok-secondary);
  font-size: 1.2rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }

  .hero-features {
    flex-direction: column;
    gap: 1rem;
  }

  .video-container {
    margin-top: 2rem;
  }

  .price-card.popular {
    transform: none;
  }

  .price-card.popular:hover {
    transform: translateY(-10px);
  }

  .section-title {
    font-size: 2rem;
  }

  .coin-amount {
    font-size: 2.5rem;
  }

  .amount {
    font-size: 2rem;
  }
}

@media (max-width: 576px) {
  .hero-section {
    padding: 60px 0;
  }

  .main-content {
    padding: 60px 0;
  }

  .hero-title {
    font-size: 2rem;
  }

  .video-container {
    padding: 1.5rem;
  }

  .card-header,
  .card-body {
    padding: 1.5rem;
  }

  .info-card {
    padding: 1.5rem;
  }
}

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

.price-card {
  animation: fadeInUp 0.6s ease forwards;
}

.price-card:nth-child(1) {
  animation-delay: 0.1s;
}
.price-card:nth-child(2) {
  animation-delay: 0.2s;
}
.price-card:nth-child(3) {
  animation-delay: 0.3s;
}
.price-card:nth-child(4) {
  animation-delay: 0.4s;
}
.price-card:nth-child(5) {
  animation-delay: 0.5s;
}
.price-card:nth-child(6) {
  animation-delay: 0.6s;
}

/* Alert Styling */
.alert {
  border-radius: 15px;
  border: none;
  padding: 1rem 1.5rem;
  margin-bottom: 2rem;
}

.alert-warning {
  background: linear-gradient(135deg, #ffeaa7 0%, #fdcb6e 100%);
  color: #2d3436;
}

/* Xóa .value.bonus styling */

.purchase-container {
  background: white;
  border-radius: 20px;
  padding: 3rem 4rem;
  box-shadow: var(--shadow-medium);
  max-width: 1200px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .purchase-container {
    padding: 2rem;
    margin: 0 1rem;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-features {
    flex-direction: column;
    gap: 1rem;
  }

  .video-container {
    margin-top: 2rem;
  }

  .price-card.popular {
    transform: none;
  }

  .price-card.popular:hover {
    transform: translateY(-10px);
  }

  .section-title {
    font-size: 2rem;
  }

  .coin-amount {
    font-size: 2.5rem;
  }

  .amount {
    font-size: 2rem;
  }
}