body {
  font-family: 'Inter', sans-serif;
  background: #f5f7fa;
  margin: 0;
  padding: 20px;
  color: #333;
}

.container {
  background: white;
  padding: 20px;
  max-width: 600px;
  margin: auto;
  border-radius: 10px;
  box-shadow: 0 0 15px rgba(0,0,0,0.1);
}

.logo {
  display: block;
  max-width: 180px;
  margin: 0 auto 20px;
}

.form-group {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
}

.preview-box {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
  overflow-y: auto;
  max-height: 250px;
  padding: 5px;
  border: 1px solid #ddd;
  border-radius: 6px;
  background: #fafafa;
}

.preview-box img {
  max-width: 100px;
  height: auto;
  border: 1px solid #ccc;
  border-radius: 4px;
}

button {
  background-color: #0072c6;
  color: white;
  border: none;
  padding: 12px 18px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  margin-top: 10px;
}

button:hover {
  background-color: #005999;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background-color: #eee;
  border-radius: 4px;
  overflow: hidden;
  margin-top: 15px;
  display: none;
}

.progress-bar::after {
  content: '';
  display: block;
  height: 100%;
  width: 0%;
  background-color: #0072c6;
  transition: width 0.4s ease;
}

#status {
  margin-top: 15px;
  font-weight: bold;
}

.mode-selector {
  display: flex;
  gap: 12px;
  margin: 16px 0;
  justify-content: center;
  flex-wrap: wrap;
}

.mode-option {
  border: 2px solid #ccc;
  border-radius: 6px;
  padding: 8px 14px;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
  background-color: #f9f9f9;
}

.mode-option:hover {
  background-color: #eaf3ff;
  border-color: #007bff;
}

.mode-option input {
  display: none;
}

.mode-option input:checked + span {
  background-color: #007bff;
  color: #fff;
  padding: 6px 10px;
  border-radius: 4px;
}

.remove-room-btn {
  background: transparent;
  color: red;
  border: none;
  font-size: 18px;
  font-weight: bold;
  cursor: pointer;
}

.room-section {
  border: 1px solid #ddd;
  border-radius: 8px;
  background: #fff;
  margin: 10px 0;
  padding: 10px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
.modal.hidden {
  display: none;
}
.modal-content {
  background: white;
  padding: 2em;
  border-radius: 8px;
  max-width: 500px;
  text-align: left;
}
.modal-actions {
  margin-top: 1.5em;
  text-align: right;
}
.modal-actions button {
  margin-left: 1em;
  padding: 0.5em 1em;
}