.login-container {
        max-width: 420px;
        margin: 60px auto 80px;
        padding: 0 20px;
    }
    .login-box {
        background: #fff;
        border-radius: 10px;
        box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
        padding: 40px 35px;
    }
    .login-box .login-header {
        text-align: center;
        margin-bottom: 30px;
    }
    .login-box .login-header .login-icon {
        font-size: 48px;
        color: var(--primary);
        display: block;
        margin-bottom: 10px;
    }
    .login-box .login-header h2 {
        font-size: 24px;
        color: var(--text-dark);
        margin: 0 0 8px;
        font-weight: 600;
        border-bottom: none;
        padding-bottom: 0;
    }
    .login-box .login-header p {
        color: var(--text-light);
        font-size: 14px;
        margin: 0;
    }
    .login-box .login-header .hint {
        background: #fff3cd;
        border: 1px solid #ffc107;
        border-radius: 6px;
        padding: 12px 16px;
        margin-top: 15px;
        font-size: 13px;
        color: #856404;
        text-align: left;
    }
    .login-box .form-group {
        margin-bottom: 20px;
    }
    .login-box .form-group label {
        display: block;
        font-weight: 500;
        color: var(--text-dark);
        margin-bottom: 6px;
        font-size: 14px;
    }
    .login-box .form-group label .required-star {
        color: var(--danger);
        margin-left: 2px;
    }
    .login-box .form-group .form-control {
        width: 100%;
        padding: 10px 14px;
        border: 1px solid var(--border);
        border-radius: 6px;
        font-size: 14px;
        box-sizing: border-box;
        background: var(--background);
        color: var(--text-dark);
    }
    .login-box .form-group .form-control:focus {
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(178, 34, 34, 0.15);
        background: #fff;
        outline: none;
    }
    .login-box .form-group .form-control.error {
        border-color: var(--danger);
    }
    .login-box .form-group .form-control.hash-input {
        font-family: monospace;
        letter-spacing: 1px;
        font-size: 13px;
    }
    .login-box .form-group .form-hint {
        font-size: 12px;
        color: var(--text-light);
        margin-top: 5px;
    }
    .login-box .btn-submit {
        width: 100%;
        padding: 12px;
        background: var(--primary);
        color: #fff;
        border: none;
        border-radius: 6px;
        font-size: 16px;
        font-weight: 600;
        cursor: pointer;
        transition: background 0.3s;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 10px;
    }
    .login-box .btn-submit:hover {
        background: var(--primary-dark);
    }
    .login-box .alert {
        padding: 12px 16px;
        border-radius: 6px;
        margin-bottom: 20px;
        font-size: 14px;
    }
    .login-box .alert-danger {
        background: #fde8e8;
        border: 1px solid #f5c6cb;
        color: #721c24;
    }
    .login-box .login-footer {
        text-align: center;
        margin-top: 25px;
        padding-top: 20px;
        border-top: 1px solid var(--border);
        font-size: 14px;
        color: var(--text-light);
    }
    .login-box .login-footer a {
        color: var(--primary);
        text-decoration: none;
        font-weight: 500;
    }
    .login-box .login-footer a:hover {
        text-decoration: underline;
        color: var(--primary-dark);
    }
    @media (max-width: 480px) {
        .login-container { margin: 30px auto 40px; }
        .login-box { padding: 25px 20px; }
        .login-box .login-header h2 { font-size: 20px; }
    }