.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}

.login-card {
    width: 100%;
    max-width: 400px;
    margin: auto;
    background: #FCFCFC;
    border: 0.5px solid #48672F;
    border-radius: 10px;
}

.login-card-content {
    padding: 20px;
}

.login-card h2 {
    text-align: center;
    margin-bottom: 24px;
    font-family: 'Volkhov', 'Chiron Hei HK';
}

.login-card form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

/* === 輸入框：底線＋無圓角 === */
.login-card input {
    width: 100%;
    padding: 10px 2px;
    border: none;
    border-bottom: 1.5px solid #48672F;
    border-radius: 0;
    background: transparent;
    color: #000;
    outline: none;
}

.login-card input::placeholder {
    color: #666;
}

.login-card input:focus {
    border-bottom: 2px solid #2f4d1f;
    box-shadow: none;
}

.login-card button[type="submit"] {
    margin-top: 12px;
    width: 100%;
    background: #48672F;
    color: #fff;
    border-radius: 6px;
    border: none;
    padding: 10px 0;
    font-size: 1em;
    font-family: 'Libre Baskerville', 'jf-lanyangming', serif;
    cursor: pointer;
}

/* 驗證碼 */
.captcha-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.captcha-refresh {
    border: none;
    background: transparent;
    cursor: pointer;
    padding: 4px;
}

.icon-sock {
    display: block;
}

.error {
    color: #b00020;
    margin-bottom: 8px;
    text-align: center;
}