* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif; background-color: #f5f7fa; display: flex; justify-content: center; padding-top: 50px; }
.container { background-color: #fff; width: 100%; max-width: 500px; padding: 40px; border-radius: 8px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
h2 { text-align: center; margin-bottom: 20px; color: #333; }
ul { margin-bottom: 30px; padding-left: 20px; color: #666; font-size: 14px; }
li { margin-bottom: 8px; }
.form-group { margin-bottom: 20px; position: relative; }
.input-error { color: red; font-size: 12px; margin-top: 4px; display: none; }
.input-error.show { display: block; }
input { width: 100%; padding: 12px 15px; border: 1px solid #ddd; border-radius: 4px; font-size: 16px; outline: none; transition: border-color 0.3s; }
input:focus { border-color: #4a90e2; }
.captcha-row { display: flex; gap: 10px; }
.captcha-img { width: 120px; height: 46px; border: 1px solid #ddd; border-radius: 4px; cursor: pointer; background-color: #eee; object-fit: contain; }
.sms-row { display: flex; gap: 10px; }
.btn-sms { width: 120px; background-color: #4a90e2; color: white; border: none; border-radius: 4px; cursor: pointer; font-size: 14px; white-space: nowrap; transition: background-color 0.3s; }
.btn-sms:disabled { background-color: #ccc; cursor: not-allowed; }
.btn-submit { width: 100%; padding: 14px; background-color: #4a90e2; color: white; border: none; border-radius: 4px; font-size: 18px; cursor: pointer; margin-top: 10px; transition: background-color 0.3s; }
.btn-submit:hover { background-color: #357abd; }
.forgot-password { display: flex; justify-content: center; align-items: center; margin-top: 15px; cursor: pointer; color: #4a90e2; font-size: 14px; text-decoration: none; transition: color 0.3s; }
.forgot-password:hover { color: #357abd; }
.forgot-password svg { margin-right: 6px; width: 18px; height: 18px; }
#message { text-align: center; margin-top: 15px; font-size: 14px; min-height: 20px; }
.success { color: green; }
.error { color: red; }