:root {
  --red: #b30000;
  --yellow: #f2c200;
  --white: #ffffff;
  --gray: #f5f5f5;
  --text: #333333;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: Arial, Helvetica, sans-serif;
}
body {
  min-height: 100vh;
  background: linear-gradient(180deg, var(--yellow) 0%, var(--red) 45%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.upload-container {
  background: var(--white);
  width: 100%;
  max-width: 460px;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  padding: 32px 24px;
  text-align: center;
}
.logo {
  font-size: 26px;
  font-weight: bold;
  color: var(--red);
  margin-bottom: 6px;
}
.subtitle {
  font-size: 14px;
  color: var(--text);
  margin-bottom: 24px;
}
.upload-box {
  border: 2px dashed var(--red);
  border-radius: 12px;
  padding: 28px 16px;
  cursor: pointer;
  transition: background 0.2s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.upload-box:hover {
  background: var(--gray);
}
.upload-box p {
  font-size: 14px;
  color: var(--text);
}
.upload-box span {
  font-size: 12px;
  color: #666;
}
.upload-box input[type="file"] {
  display: none;
}
.preview {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.preview img {
  width: 100%;
  max-height: 260px;
  object-fit: contain;
  border-radius: 10px;
  border: 1px solid #ddd;
}
input[type="text"],
input[type="tel"] {
  width: 100%;
  padding: 12px;
  margin-bottom: 16px;
  border-radius: 8px;
  border: 1px solid #ccc;
  font-size: 14px;
}
button {
  margin-top: 24px;
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 10px;
  background: var(--red);
  color: var(--white);
  font-size: 15px;
  font-weight: bold;
  cursor: pointer;
}
button:disabled {
  background: #ccc;
  cursor: not-allowed;
}
.message {
  margin-top: 20px;
  padding: 10px;
  border-radius: 8px;
  font-size: 14px;
}
.success {
  background: #d4edda;
  color: #155724;
}
.error {
  background: #f8d7da;
  color: #721c24;
}
@media (max-width: 480px) {
  .upload-container {
    padding: 24px 18px;
  }
}