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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: 
    linear-gradient(rgba(79, 172, 254, 0.15), rgba(0, 242, 254, 0.15)), 
    url('monastiraki-bg.jpg?v=1') center/cover no-repeat fixed;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  color: #333;
  min-height: 100vh;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  max-width: 550px;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 2.5rem;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.language-selector {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  margin-bottom: 1.5rem;
}

.language-selector label {
  font-size: 20px;
  margin: 0;
}

.language-selector select {
  padding: 0.5rem 1rem;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  background: white;
  cursor: pointer;
  font-size: 14px;
  transition: border-color 0.3s;
  width: auto;
  margin: 0;
}

.language-selector select:hover {
  border-color: #4facfe;
}

.language-selector select:focus {
  outline: none;
  border-color: #4facfe;
}

.header {
  text-align: center;
  margin-bottom: 2rem;
}

.flatpickr-day:not(.flatpickr-disabled):not(.prevMonthDay):not(.nextMonthDay):not(.blocked) {
  background-color: #c8e6c9 !important;
  color: #2e7d32 !important;
  font-weight: 500;
}

.flatpickr-day:not(.flatpickr-disabled):not(.prevMonthDay):not(.nextMonthDay):not(.blocked):hover {
  background-color: #66bb6a !important;
  color: white !important;
}

.flatpickr-day.blocked {
  background-color: #ffcdd2 !important;
  color: #c62828 !important;
  cursor: not-allowed !important;
  text-decoration: line-through;
  font-weight: 500;
}

.flatpickr-day.blocked:hover {
  background-color: #ef5350 !important;
  color: white !important;
}

.flatpickr-calendar {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  border-radius: 8px;
}

.flatpickr-day.today {
  border-color: #4facfe !important;
  font-weight: bold;
}

.flatpickr-day.selected {
  background: #4facfe !important;
  border-color: #4facfe !important;
  color: white !important;
}

.header h1 {
  color: #333;
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.header p {
  color: #666;
  font-size: 1.1rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: #555;
  font-size: 15px;
}

.form-group .icon {
  font-size: 18px;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 15px;
  transition: all 0.3s;
  font-family: inherit;
  margin: 0;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: #4facfe;
  box-shadow: 0 0 0 3px rgba(79, 172, 254, 0.1);
}

.form-group input:hover {
  border-color: #b0b0b0;
}

input[type="date"]::-webkit-calendar-picker-indicator {
  cursor: pointer;
  font-size: 1.2rem;
  padding: 4px;
}

.cost-display {
  background: linear-gradient(135deg, #1565c0 0%, #0d47a1 100%);
  color: white;
  padding: 1.25rem;
  border-radius: 12px;
  text-align: center;
  margin: 1.5rem 0;
  box-shadow: 0 4px 15px rgba(13, 71, 161, 0.4);
}

.cost-display #cost-label {
  display: block;
  font-size: 0.9rem;
  opacity: 0.95;
  margin-bottom: 0.3rem;
  font-weight: 500;
}

.cost-display #cost-value {
  display: block;
  font-size: 2rem;
  font-weight: bold;
  letter-spacing: 1px;
}

.cost-display #nights-display {
  display: inline;
  font-size: 0.9rem;
  opacity: 0.95;
  font-weight: 500;
  margin-right: 5px;
}

.payment-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 0.5rem;
}

.payment-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 1rem;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s;
  background: white;
}

.payment-option:hover {
  border-color: #4facfe;
  background: #f0f9ff;
}

.payment-option input[type="radio"] {
  width: auto;
  margin: 0;
  cursor: pointer;
  transform: scale(1.3);
}

.payment-option span {
  font-size: 14px;
  color: #555;
}

button[type="submit"] {
  width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, #1565c0 0%, #0d47a1 100%);
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 4px 15px rgba(13, 71, 161, 0.4);
  margin-top: 0.5rem;
}

button[type="submit"]:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(13, 71, 161, 0.5);
}

button[type="submit"]:active {
  transform: translateY(0);
}

button[type="submit"]:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.confirmation-message {
  text-align: center;
  margin-top: 1.5rem;
  padding: 1rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
}

.confirmation-message.success {
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.confirmation-message.error {
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

@media (max-width: 600px) {
  .container {
    padding: 1.5rem;
  }
  
  .header h1 {
    font-size: 1.6rem;
  }
  
  .cost-display #cost-value {
    font-size: 1.6rem;
  }
}