* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --dark-bg: #0a0e27;
  --darker-bg: #050812;
  --blue: #0066ff;
  --blue-light: #3399ff;
  --blue-dark: #0044cc;
  --silver: #b0b8c5;
  --silver-light: #d4dce8;
  --silver-dark: #6b7280;
  --accent: #00ccff;
  --text-light: #e0e8f0;
  --text-dark: #a0aec0;
  --success: #00ff88;
  --error: #ff3366;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, var(--dark-bg) 0%, var(--darker-bg) 100%);
  color: var(--text-light);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Animated Stars Background */
.stars {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
}

.stars::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(2px 2px at 20px 30px, var(--silver-light), rgba(0, 0, 0, 0)),
    radial-gradient(2px 2px at 60px 70px, var(--blue-light), rgba(0, 0, 0, 0)),
    radial-gradient(1px 1px at 50px 50px, var(--silver), rgba(0, 0, 0, 0)),
    radial-gradient(1px 1px at 130px 80px, var(--accent), rgba(0, 0, 0, 0)),
    radial-gradient(2px 2px at 90px 10px, var(--silver-light), rgba(0, 0, 0, 0));
  background-repeat: repeat;
  background-size: 200px 200px;
  animation: twinkle 5s infinite;
}

@keyframes twinkle {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* Container */
.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
  background: rgba(10, 14, 39, 0.8);
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 102, 255, 0.2), inset 0 1px 0 rgba(212, 220, 232, 0.1);
  margin-top: 20px;
  margin-bottom: 20px;
  animation: slideIn 0.6s ease-out;
  border: 1px solid rgba(0, 102, 255, 0.2);
}

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

/* Header */
.header {
  text-align: center;
  padding: 40px 20px;
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.2) 0%, rgba(0, 204, 255, 0.1) 100%);
  border-radius: 15px;
  color: var(--text-light);
  margin-bottom: 40px;
  border: 1px solid rgba(0, 102, 255, 0.3);
  box-shadow: 0 8px 32px rgba(0, 102, 255, 0.15);
}

.header h1 {
  font-size: 3em;
  margin-bottom: 10px;
  text-shadow: 0 0 20px rgba(0, 204, 255, 0.5);
  animation: bounce 1s infinite;
  color: var(--accent);
}

.header .subtitle {
  font-size: 1.3em;
  opacity: 0.9;
  color: var(--silver-light);
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Salami Info */
.salami-info {
  text-align: center;
  margin-bottom: 40px;
  padding: 30px;
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.1) 0%, rgba(0, 204, 255, 0.05) 100%);
  border-radius: 15px;
  border-left: 5px solid var(--blue);
  border: 1px solid rgba(0, 102, 255, 0.2);
  box-shadow: 0 4px 15px rgba(0, 102, 255, 0.1);
}

.salami-info h2 {
  font-size: 2em;
  margin-bottom: 15px;
  color: var(--accent);
  text-shadow: 0 0 10px rgba(0, 204, 255, 0.3);
}

.festive-text {
  font-size: 1.1em;
  line-height: 1.6;
  margin-bottom: 20px;
  color: var(--text-light);
}

.benefits {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.benefit {
  padding: 10px 20px;
  background: rgba(0, 102, 255, 0.15);
  border-radius: 20px;
  color: var(--accent);
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(0, 102, 255, 0.2);
  border: 1px solid rgba(0, 204, 255, 0.3);
}

/* Payment Section */
.payment-section {
  margin-bottom: 40px;
}

.payment-section h2 {
  text-align: center;
  font-size: 2em;
  margin-bottom: 30px;
  color: var(--accent);
  text-shadow: 0 0 10px rgba(0, 204, 255, 0.3);
}

.payment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.payment-card {
  background: rgba(16, 25, 61, 0.8);
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 5px 15px rgba(0, 102, 255, 0.15);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid rgba(0, 102, 255, 0.2);
}

.payment-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 204, 255, 0.3);
  border: 1px solid rgba(0, 204, 255, 0.4);
}

.payment-btn {
  width: 100%;
  padding: 25px 20px;
  border: 1px solid rgba(0, 102, 255, 0.3);
  border-radius: 10px;
  font-size: 1.1em;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: white;
  transition: all 0.3s ease;
  background: rgba(0, 102, 255, 0.2);
  min-height: 200px;
}

/* Payment Logo Styling */
/* Payment Logo Styling */
.payment-logo {
  width: 100px;
  height: 100px;
  object-fit: contain;
  object-position: center;
  filter: brightness(1.05);
  transition: all 0.3s ease;
}

.payment-btn:hover .payment-logo {
  transform: scale(1.1);
  filter: brightness(1.15);
}

/* Individual logo scaling to normalize size */
/* Bkash - Good size, slight boost */
.payment-card:nth-child(1) .payment-logo {
  width: 110px;
  height: 110px;
}

/* Nagad - Good size, slight boost */
.payment-card:nth-child(2) .payment-logo {
  width: 110px;
  height: 110px;
}

/* Bank - Keep as is */
.payment-card:nth-child(3) .payment-logo {
  width: 100px;
  height: 100px;
}

/* Cellfin - Much smaller, needs bigger size */
.payment-card:nth-child(4) .payment-logo {
  width: 140px;
  height: 140px;
  filter: brightness(1.1) contrast(1.2);
}

/* Rocket - Much smaller, needs bigger size */
.payment-card:nth-child(5) .payment-logo {
  width: 140px;
  height: 140px;
  filter: brightness(1.05) contrast(1.15);
}

/* mKash - Medium size, slight boost */
.payment-card:nth-child(6) .payment-logo {
  width: 120px;
  height: 120px;
}
.payment-btn .icon {
  font-size: 3em;
}

.bkash-btn {
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.3) 0%, rgba(0, 153, 255, 0.2) 100%);
  border: 1px solid rgba(0, 153, 255, 0.4);
}

.bkash-btn:hover {
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.5) 0%, rgba(0, 153, 255, 0.4) 100%);
  box-shadow: 0 0 20px rgba(0, 153, 255, 0.4);
}

.nagad-btn {
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.3) 0%, rgba(0, 204, 255, 0.2) 100%);
  border: 1px solid rgba(0, 204, 255, 0.4);
}

.nagad-btn:hover {
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.5) 0%, rgba(0, 204, 255, 0.4) 100%);
  box-shadow: 0 0 20px rgba(0, 204, 255, 0.4);
}

.bank-btn {
  background: linear-gradient(135deg, rgba(176, 184, 197, 0.2) 0%, rgba(107, 114, 128, 0.15) 100%);
  border: 1px solid rgba(176, 184, 197, 0.3);
}

.bank-btn:hover {
  background: linear-gradient(135deg, rgba(176, 184, 197, 0.3) 0%, rgba(107, 114, 128, 0.25) 100%);
  box-shadow: 0 0 20px rgba(176, 184, 197, 0.3);
}

.cellfin-btn {
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.3) 0%, rgba(0, 153, 255, 0.2) 100%);
  border: 1px solid rgba(0, 153, 255, 0.4);
}

.cellfin-btn:hover {
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.5) 0%, rgba(0, 153, 255, 0.4) 100%);
  box-shadow: 0 0 20px rgba(0, 153, 255, 0.4);
}

.rocket-btn {
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.3) 0%, rgba(0, 204, 255, 0.2) 100%);
  border: 1px solid rgba(0, 204, 255, 0.4);
}

.rocket-btn:hover {
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.5) 0%, rgba(0, 204, 255, 0.4) 100%);
  box-shadow: 0 0 20px rgba(0, 204, 255, 0.4);
}

.mkash-btn {
  background: linear-gradient(135deg, rgba(176, 184, 197, 0.2) 0%, rgba(107, 114, 128, 0.15) 100%);
  border: 1px solid rgba(176, 184, 197, 0.3);
}

.mkash-btn:hover {
  background: linear-gradient(135deg, rgba(176, 184, 197, 0.3) 0%, rgba(107, 114, 128, 0.25) 100%);
  box-shadow: 0 0 20px rgba(176, 184, 197, 0.3);
}

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

.payment-details {
  margin-top: 15px;
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.payment-info {
  background: rgba(5, 8, 18, 0.8);
  padding: 15px;
  border-radius: 10px;
  border-left: 4px solid var(--accent);
  border: 1px solid rgba(0, 204, 255, 0.2);
}

.label {
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--accent);
}

.number-container {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: space-between;
  flex-wrap: wrap;
}

.number {
  font-size: 1.3em;
  font-weight: bold;
  color: var(--silver-light);
  font-family: 'Times New Roman', monospace;
  letter-spacing: 2px;
  text-shadow: 0 0 10px rgba(0, 204, 255, 0.3);
}

.copy-btn {
  padding: 8px 15px;
  background: linear-gradient(135deg, var(--blue) 0%, var(--accent) 100%);
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 204, 255, 0.3);
}

.copy-btn:hover {
  background: linear-gradient(135deg, var(--blue-light) 0%, var(--accent) 100%);
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(0, 204, 255, 0.5);
}

.copy-btn:active {
  transform: scale(0.95);
}

/* Message Section */
.message-section {
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.1) 0%, rgba(0, 204, 255, 0.05) 100%);
  padding: 40px;
  border-radius: 15px;
  margin-bottom: 30px;
  border: 1px solid rgba(0, 102, 255, 0.2);
  box-shadow: 0 8px 32px rgba(0, 102, 255, 0.1);
}

.message-section h2 {
  text-align: center;
  font-size: 2em;
  margin-bottom: 30px;
  color: var(--accent);
  text-shadow: 0 0 10px rgba(0, 204, 255, 0.3);
}

.message-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 25px;
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--silver-light);
  font-size: 1.05em;
}

.form-group input,
.form-group textarea {
  padding: 12px 15px;
  border: 1px solid rgba(0, 102, 255, 0.3);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1em;
  background: rgba(5, 8, 18, 0.6);
  color: var(--text-light);
  transition: all 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--silver-dark);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(5, 8, 18, 0.8);
  box-shadow: 0 0 15px rgba(0, 204, 255, 0.3);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.char-count {
  font-size: 0.85em;
  color: var(--silver-dark);
  margin-top: 5px;
}

.error {
  color: var(--error);
  font-size: 0.85em;
  margin-top: 5px;
  display: none;
}

.error.show {
  display: block;
}

.submit-btn {
  width: 100%;
  padding: 15px;
  background: linear-gradient(135deg, var(--blue) 0%, var(--accent) 100%);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1.1em;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 6px 20px rgba(0, 204, 255, 0.3);
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 204, 255, 0.5);
}

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

.success-message {
  margin-top: 20px;
  padding: 15px;
  background: linear-gradient(135deg, rgba(0, 255, 136, 0.2) 0%, rgba(0, 204, 255, 0.1) 100%);
  color: var(--success);
  border-radius: 8px;
  text-align: center;
  font-weight: 600;
  animation: slideDown 0.3s ease-out;
  border: 1px solid rgba(0, 255, 136, 0.3);
  box-shadow: 0 4px 15px rgba(0, 255, 136, 0.2);
}

/* Footer */
.footer {
  text-align: center;
  padding: 30px;
  border-top: 1px solid rgba(0, 102, 255, 0.2);
  color: var(--silver-dark);
}

.footer p {
  margin-bottom: 10px;
  font-size: 1.05em;
  color: var(--text-light);
}

.small-text {
  font-size: 0.9em;
  color: var(--silver-dark);
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 15px;
  }

  .header h1 {
    font-size: 2em;
  }

  .header .subtitle {
    font-size: 1em;
  }

  .benefits {
    gap: 8px;
    margin-top: 15px;
  }

  .benefit {
    padding: 8px 12px;
    font-size: 0.9em;
    white-space: nowrap;
  }

  .payment-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .payment-btn {
    min-height: 160px;
    padding: 15px 10px;
  }

  .payment-logo {
    width: 70px;
    height: 70px;
  }

  .payment-card {
    padding: 12px;
  }

  .payment-info {
    padding: 10px;
  }

  .number {
    font-size: 1em;
  }

  .label {
    font-size: 0.9em;
  }

  .message-section {
    padding: 20px;
  }

  .message-section h2 {
    font-size: 1.5em;
  }
}

@media (max-width: 480px) {
  .benefits {
    gap: 5px;
  }

  .benefit {
    padding: 6px 10px;
    font-size: 0.8em;
    white-space: nowrap;
  }

  .payment-btn {
    min-height: 160px;
    padding: 10px;
  }

  .payment-logo {
    width: 65px;
    height: 65px;
  }

  .payment-card {
    padding: 8px;
  }

  .number {
    font-size: 0.9em;
    letter-spacing: 1px;
  }
}